/*  Prototype JavaScript framework, version 1.7
 *  (c) 2005-2010 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {

    Version: '1.7',

    Browser: (function() {
        var ua = navigator.userAgent;
        var isOpera = Object.prototype.toString.call(window.opera) == '[object Opera]';
        return {
            IE: !! window.attachEvent && !isOpera,
            Opera: isOpera,
            WebKit: ua.indexOf('AppleWebKit/') > -1,
            Gecko: ua.indexOf('Gecko') > -1 && ua.indexOf('KHTML') === -1,
            MobileSafari: /Apple.*Mobile/.test(ua)
        }
    })(),

    BrowserFeatures: {
        XPath: !! document.evaluate,

        SelectorsAPI: !! document.querySelector,

        ElementExtensions: (function() {
            var constructor = window.Element || window.HTMLElement;
            return !!(constructor && constructor.prototype);
        })(),
        SpecificElementExtensions: (function() {
            if (typeof window.HTMLDivElement !== 'undefined') return true;

            var div = document.createElement('div'),
                form = document.createElement('form'),
                isSupported = false;

            if (div['__proto__'] && (div['__proto__'] !== form['__proto__'])) {
                isSupported = true;
            }

            div = form = null;

            return isSupported;
        })()
    },

    ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
    JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

    emptyFunction: function() {},

    K: function(x) {
        return x
    }
};

if (Prototype.Browser.MobileSafari) Prototype.BrowserFeatures.SpecificElementExtensions = false; /* Based on Alex Arnell's inheritance implementation. */

var Class = (function() {

    var IS_DONTENUM_BUGGY = (function() {
        for (var p in {
            toString: 1
        }) {
            if (p === 'toString') return false;
        }
        return true;
    })();

    function subclass() {};

    function create() {
        var parent = null,
            properties = $A(arguments);
        if (Object.isFunction(properties[0])) parent = properties.shift();

        function klass() {
            this.initialize.apply(this, arguments);
        }

        Object.extend(klass, Class.Methods);
        klass.superclass = parent;
        klass.subclasses = [];

        if (parent) {
            subclass.prototype = parent.prototype;
            klass.prototype = new subclass;
            parent.subclasses.push(klass);
        }

        for (var i = 0, length = properties.length; i < length; i++)
        klass.addMethods(properties[i]);

        if (!klass.prototype.initialize) klass.prototype.initialize = Prototype.emptyFunction;

        klass.prototype.constructor = klass;
        return klass;
    }

    function addMethods(source) {
        var ancestor = this.superclass && this.superclass.prototype,
            properties = Object.keys(source);

        if (IS_DONTENUM_BUGGY) {
            if (source.toString != Object.prototype.toString) properties.push("toString");
            if (source.valueOf != Object.prototype.valueOf) properties.push("valueOf");
        }

        for (var i = 0, length = properties.length; i < length; i++) {
            var property = properties[i],
                value = source[property];
            if (ancestor && Object.isFunction(value) && value.argumentNames()[0] == "$super") {
                var method = value;
                value = (function(m) {
                    return function() {
                        return ancestor[m].apply(this, arguments);
                    };
                })(property).wrap(method);

                value.valueOf = method.valueOf.bind(method);
                value.toString = method.toString.bind(method);
            }
            this.prototype[property] = value;
        }

        return this;
    }

    return {
        create: create,
        Methods: {
            addMethods: addMethods
        }
    };
})();
(function() {

    var _toString = Object.prototype.toString,
        NULL_TYPE = 'Null',
        UNDEFINED_TYPE = 'Undefined',
        BOOLEAN_TYPE = 'Boolean',
        NUMBER_TYPE = 'Number',
        STRING_TYPE = 'String',
        OBJECT_TYPE = 'Object',
        FUNCTION_CLASS = '[object Function]',
        BOOLEAN_CLASS = '[object Boolean]',
        NUMBER_CLASS = '[object Number]',
        STRING_CLASS = '[object String]',
        ARRAY_CLASS = '[object Array]',
        DATE_CLASS = '[object Date]',
        NATIVE_JSON_STRINGIFY_SUPPORT = window.JSON && typeof JSON.stringify === 'function' && JSON.stringify(0) === '0' && typeof JSON.stringify(Prototype.K) === 'undefined';

    function Type(o) {
        switch (o) {
        case null:
            return NULL_TYPE;
        case (void 0):
            return UNDEFINED_TYPE;
        }
        var type = typeof o;
        switch (type) {
        case 'boolean':
            return BOOLEAN_TYPE;
        case 'number':
            return NUMBER_TYPE;
        case 'string':
            return STRING_TYPE;
        }
        return OBJECT_TYPE;
    }

    function extend(destination, source) {
        for (var property in source)
        destination[property] = source[property];
        return destination;
    }

    function inspect(object) {
        try {
            if (isUndefined(object)) return 'undefined';
            if (object === null) return 'null';
            return object.inspect ? object.inspect() : String(object);
        } catch (e) {
            if (e instanceof RangeError) return '...';
            throw e;
        }
    }

    function toJSON(value) {
        return Str('', {
            '': value
        }, []);
    }

    function Str(key, holder, stack) {
        var value = holder[key],
            type = typeof value;

        if (Type(value) === OBJECT_TYPE && typeof value.toJSON === 'function') {
            value = value.toJSON(key);
        }

        var _class = _toString.call(value);

        switch (_class) {
        case NUMBER_CLASS:
        case BOOLEAN_CLASS:
        case STRING_CLASS:
            value = value.valueOf();
        }

        switch (value) {
        case null:
            return 'null';
        case true:
            return 'true';
        case false:
            return 'false';
        }

        type = typeof value;
        switch (type) {
        case 'string':
            return value.inspect(true);
        case 'number':
            return isFinite(value) ? String(value) : 'null';
        case 'object':

            for (var i = 0, length = stack.length; i < length; i++) {
                if (stack[i] === value) {
                    throw new TypeError();
                }
            }
            stack.push(value);

            var partial = [];
            if (_class === ARRAY_CLASS) {
                for (var i = 0, length = value.length; i < length; i++) {
                    var str = Str(i, value, stack);
                    partial.push(typeof str === 'undefined' ? 'null' : str);
                }
                partial = '[' + partial.join(',') + ']';
            } else {
                var keys = Object.keys(value);
                for (var i = 0, length = keys.length; i < length; i++) {
                    var key = keys[i],
                        str = Str(key, value, stack);
                    if (typeof str !== "undefined") {
                        partial.push(key.inspect(true) + ':' + str);
                    }
                }
                partial = '{' + partial.join(',') + '}';
            }
            stack.pop();
            return partial;
        }
    }

    function stringify(object) {
        return JSON.stringify(object);
    }

    function toQueryString(object) {
        return $H(object).toQueryString();
    }

    function toHTML(object) {
        return object && object.toHTML ? object.toHTML() : String.interpret(object);
    }

    function keys(object) {
        if (Type(object) !== OBJECT_TYPE) {
            throw new TypeError();
        }
        var results = [];
        for (var property in object) {
            if (object.hasOwnProperty(property)) {
                results.push(property);
            }
        }
        return results;
    }

    function values(object) {
        var results = [];
        for (var property in object)
        results.push(object[property]);
        return results;
    }

    function clone(object) {
        return extend({}, object);
    }

    function isElement(object) {
        return !!(object && object.nodeType == 1);
    }

    function isArray(object) {
        return _toString.call(object) === ARRAY_CLASS;
    }

    var hasNativeIsArray = (typeof Array.isArray == 'function') && Array.isArray([]) && !Array.isArray({});

    if (hasNativeIsArray) {
        isArray = Array.isArray;
    }

    function isHash(object) {
        return object instanceof Hash;
    }

    function isFunction(object) {
        return _toString.call(object) === FUNCTION_CLASS;
    }

    function isString(object) {
        return _toString.call(object) === STRING_CLASS;
    }

    function isNumber(object) {
        return _toString.call(object) === NUMBER_CLASS;
    }

    function isDate(object) {
        return _toString.call(object) === DATE_CLASS;
    }

    function isUndefined(object) {
        return typeof object === "undefined";
    }

    extend(Object, {
        extend: extend,
        inspect: inspect,
        toJSON: NATIVE_JSON_STRINGIFY_SUPPORT ? stringify : toJSON,
        toQueryString: toQueryString,
        toHTML: toHTML,
        keys: Object.keys || keys,
        values: values,
        clone: clone,
        isElement: isElement,
        isArray: isArray,
        isHash: isHash,
        isFunction: isFunction,
        isString: isString,
        isNumber: isNumber,
        isDate: isDate,
        isUndefined: isUndefined
    });
})();
Object.extend(Function.prototype, (function() {
    var slice = Array.prototype.slice;

    function update(array, args) {
        var arrayLength = array.length,
            length = args.length;
        while (length--) array[arrayLength + length] = args[length];
        return array;
    }

    function merge(array, args) {
        array = slice.call(array, 0);
        return update(array, args);
    }

    function argumentNames() {
        var names = this.toString().match(/^[\s\(]*function[^(]*\(([^)]*)\)/)[1].replace(/\/\/.*?[\r\n]|\/\*(?:.|[\r\n])*?\*\//g, '').replace(/\s+/g, '').split(',');
        return names.length == 1 && !names[0] ? [] : names;
    }

    function bind(context) {
        if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
        var __method = this,
            args = slice.call(arguments, 1);
        return function() {
            var a = merge(args, arguments);
            return __method.apply(context, a);
        }
    }

    function bindAsEventListener(context) {
        var __method = this,
            args = slice.call(arguments, 1);
        return function(event) {
            var a = update([event || window.event], args);
            return __method.apply(context, a);
        }
    }

    function curry() {
        if (!arguments.length) return this;
        var __method = this,
            args = slice.call(arguments, 0);
        return function() {
            var a = merge(args, arguments);
            return __method.apply(this, a);
        }
    }

    function delay(timeout) {
        var __method = this,
            args = slice.call(arguments, 1);
        timeout = timeout * 1000;
        return window.setTimeout(function() {
            return __method.apply(__method, args);
        }, timeout);
    }

    function defer() {
        var args = update([0.01], arguments);
        return this.delay.apply(this, args);
    }

    function wrap(wrapper) {
        var __method = this;
        return function() {
            var a = update([__method.bind(this)], arguments);
            return wrapper.apply(this, a);
        }
    }

    function methodize() {
        if (this._methodized) return this._methodized;
        var __method = this;
        return this._methodized = function() {
            var a = update([this], arguments);
            return __method.apply(null, a);
        };
    }

    return {
        argumentNames: argumentNames,
        bind: bind,
        bindAsEventListener: bindAsEventListener,
        curry: curry,
        delay: delay,
        defer: defer,
        wrap: wrap,
        methodize: methodize
    }
})());



(function(proto) {


    function toISOString() {
        return this.getUTCFullYear() + '-' + (this.getUTCMonth() + 1).toPaddedString(2) + '-' + this.getUTCDate().toPaddedString(2) + 'T' + this.getUTCHours().toPaddedString(2) + ':' + this.getUTCMinutes().toPaddedString(2) + ':' + this.getUTCSeconds().toPaddedString(2) + 'Z';
    }


    function toJSON() {
        return this.toISOString();
    }

    if (!proto.toISOString) proto.toISOString = toISOString;
    if (!proto.toJSON) proto.toJSON = toJSON;

})(Date.prototype);


RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
    return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};
var PeriodicalExecuter = Class.create({
    initialize: function(callback, frequency) {
        this.callback = callback;
        this.frequency = frequency;
        this.currentlyExecuting = false;

        this.registerCallback();
    },

    registerCallback: function() {
        this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
    },

    execute: function() {
        this.callback(this);
    },

    stop: function() {
        if (!this.timer) return;
        clearInterval(this.timer);
        this.timer = null;
    },

    onTimerEvent: function() {
        if (!this.currentlyExecuting) {
            try {
                this.currentlyExecuting = true;
                this.execute();
                this.currentlyExecuting = false;
            } catch (e) {
                this.currentlyExecuting = false;
                throw e;
            }
        }
    }
});
Object.extend(String, {
    interpret: function(value) {
        return value == null ? '' : String(value);
    },
    specialChar: {
        '\b': '\\b',
        '\t': '\\t',
        '\n': '\\n',
        '\f': '\\f',
        '\r': '\\r',
        '\\': '\\\\'
    }
});

Object.extend(String.prototype, (function() {
    var NATIVE_JSON_PARSE_SUPPORT = window.JSON && typeof JSON.parse === 'function' && JSON.parse('{"test": true}').test;

    function prepareReplacement(replacement) {
        if (Object.isFunction(replacement)) return replacement;
        var template = new Template(replacement);
        return function(match) {
            return template.evaluate(match)
        };
    }

    function gsub(pattern, replacement) {
        var result = '',
            source = this,
            match;
        replacement = prepareReplacement(replacement);

        if (Object.isString(pattern)) pattern = RegExp.escape(pattern);

        if (!(pattern.length || pattern.source)) {
            replacement = replacement('');
            return replacement + source.split('').join(replacement) + replacement;
        }

        while (source.length > 0) {
            if (match = source.match(pattern)) {
                result += source.slice(0, match.index);
                result += String.interpret(replacement(match));
                source = source.slice(match.index + match[0].length);
            } else {
                result += source, source = '';
            }
        }
        return result;
    }

    function sub(pattern, replacement, count) {
        replacement = prepareReplacement(replacement);
        count = Object.isUndefined(count) ? 1 : count;

        return this.gsub(pattern, function(match) {
            if (--count < 0) return match[0];
            return replacement(match);
        });
    }

    function scan(pattern, iterator) {
        this.gsub(pattern, iterator);
        return String(this);
    }

    function truncate(length, truncation) {
        length = length || 30;
        truncation = Object.isUndefined(truncation) ? '...' : truncation;
        return this.length > length ? this.slice(0, length - truncation.length) + truncation : String(this);
    }

    function strip() {
        return this.replace(/^\s+/, '').replace(/\s+$/, '');
    }

    function stripTags() {
        return this.replace(/<\w+(\s+("[^"]*"|'[^']*'|[^>])+)?>|<\/\w+>/gi, '');
    }

    function stripScripts() {
        return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
    }

    function extractScripts() {
        var matchAll = new RegExp(Prototype.ScriptFragment, 'img'),
            matchOne = new RegExp(Prototype.ScriptFragment, 'im');
        return (this.match(matchAll) || []).map(function(scriptTag) {
            return (scriptTag.match(matchOne) || ['', ''])[1];
        });
    }

    function evalScripts() {
        return this.extractScripts().map(function(script) {
            return eval(script)
        });
    }

    function escapeHTML() {
        return this.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
    }

    function unescapeHTML() {
        return this.stripTags().replace(/&lt;/g, '<').replace(/&gt;/g, '>').replace(/&amp;/g, '&');
    }


    function toQueryParams(separator) {
        var match = this.strip().match(/([^?#]*)(#.*)?$/);
        if (!match) return {};

        return match[1].split(separator || '&').inject({}, function(hash, pair) {
            if ((pair = pair.split('='))[0]) {
                var key = decodeURIComponent(pair.shift()),
                    value = pair.length > 1 ? pair.join('=') : pair[0];

                if (value != undefined) value = decodeURIComponent(value);

                if (key in hash) {
                    if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
                    hash[key].push(value);
                } else hash[key] = value;
            }
            return hash;
        });
    }

    function toArray() {
        return this.split('');
    }

    function succ() {
        return this.slice(0, this.length - 1) + String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
    }

    function times(count) {
        return count < 1 ? '' : new Array(count + 1).join(this);
    }

    function camelize() {
        return this.replace(/-+(.)?/g, function(match, chr) {
            return chr ? chr.toUpperCase() : '';
        });
    }

    function capitalize() {
        return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
    }

    function underscore() {
        return this.replace(/::/g, '/').replace(/([A-Z]+)([A-Z][a-z])/g, '$1_$2').replace(/([a-z\d])([A-Z])/g, '$1_$2').replace(/-/g, '_').toLowerCase();
    }

    function dasherize() {
        return this.replace(/_/g, '-');
    }

    function inspect(useDoubleQuotes) {
        var escapedString = this.replace(/[\x00-\x1f\\]/g, function(character) {
            if (character in String.specialChar) {
                return String.specialChar[character];
            }
            return '\\u00' + character.charCodeAt().toPaddedString(2, 16);
        });
        if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
        return "'" + escapedString.replace(/'/g, '\\\'') + "'";
    }

    function unfilterJSON(filter) {
        return this.replace(filter || Prototype.JSONFilter, '$1');
    }

    function isJSON() {
        var str = this;
        if (str.blank()) return false;
        str = str.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@');
        str = str.replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']');
        str = str.replace(/(?:^|:|,)(?:\s*\[)+/g, '');
        return (/^[\],:{}\s]*$/).test(str);
    }

    function evalJSON(sanitize) {
        var json = this.unfilterJSON(),
            cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
        if (cx.test(json)) {
            json = json.replace(cx, function(a) {
                return '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
            });
        }
        try {
            if (!sanitize || json.isJSON()) return eval('(' + json + ')');
        } catch (e) {}
        throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
    }

    function parseJSON() {
        var json = this.unfilterJSON();
        return JSON.parse(json);
    }

    function include(pattern) {
        return this.indexOf(pattern) > -1;
    }

    function startsWith(pattern) {
        return this.lastIndexOf(pattern, 0) === 0;
    }

    function endsWith(pattern) {
        var d = this.length - pattern.length;
        return d >= 0 && this.indexOf(pattern, d) === d;
    }

    function empty() {
        return this == '';
    }

    function blank() {
        return /^\s*$/.test(this);
    }

    function interpolate(object, pattern) {
        return new Template(this, pattern).evaluate(object);
    }

    return {
        gsub: gsub,
        sub: sub,
        scan: scan,
        truncate: truncate,
        strip: String.prototype.trim || strip,
        stripTags: stripTags,
        stripScripts: stripScripts,
        extractScripts: extractScripts,
        evalScripts: evalScripts,
        escapeHTML: escapeHTML,
        unescapeHTML: unescapeHTML,
        toQueryParams: toQueryParams,
        parseQuery: toQueryParams,
        toArray: toArray,
        succ: succ,
        times: times,
        camelize: camelize,
        capitalize: capitalize,
        underscore: underscore,
        dasherize: dasherize,
        inspect: inspect,
        unfilterJSON: unfilterJSON,
        isJSON: isJSON,
        evalJSON: NATIVE_JSON_PARSE_SUPPORT ? parseJSON : evalJSON,
        include: include,
        startsWith: startsWith,
        endsWith: endsWith,
        empty: empty,
        blank: blank,
        interpolate: interpolate
    };
})());

var Template = Class.create({
    initialize: function(template, pattern) {
        this.template = template.toString();
        this.pattern = pattern || Template.Pattern;
    },

    evaluate: function(object) {
        if (object && Object.isFunction(object.toTemplateReplacements)) object = object.toTemplateReplacements();

        return this.template.gsub(this.pattern, function(match) {
            if (object == null) return (match[1] + '');

            var before = match[1] || '';
            if (before == '\\') return match[2];

            var ctx = object,
                expr = match[3],
                pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;

            match = pattern.exec(expr);
            if (match == null) return before;

            while (match != null) {
                var comp = match[1].startsWith('[') ? match[2].replace(/\\\\]/g, ']') : match[1];
                ctx = ctx[comp];
                if (null == ctx || '' == match[3]) break;
                expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
                match = pattern.exec(expr);
            }

            return before + String.interpret(ctx);
        });
    }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = {};

var Enumerable = (function() {
    function each(iterator, context) {
        var index = 0;
        try {
            this._each(function(value) {
                iterator.call(context, value, index++);
            });
        } catch (e) {
            if (e != $break) throw e;
        }
        return this;
    }

    function eachSlice(number, iterator, context) {
        var index = -number,
            slices = [],
            array = this.toArray();
        if (number < 1) return array;
        while ((index += number) < array.length)
        slices.push(array.slice(index, index + number));
        return slices.collect(iterator, context);
    }

    function all(iterator, context) {
        iterator = iterator || Prototype.K;
        var result = true;
        this.each(function(value, index) {
            result = result && !! iterator.call(context, value, index);
            if (!result) throw $break;
        });
        return result;
    }

    function any(iterator, context) {
        iterator = iterator || Prototype.K;
        var result = false;
        this.each(function(value, index) {
            if (result = !! iterator.call(context, value, index)) throw $break;
        });
        return result;
    }

    function collect(iterator, context) {
        iterator = iterator || Prototype.K;
        var results = [];
        this.each(function(value, index) {
            results.push(iterator.call(context, value, index));
        });
        return results;
    }

    function detect(iterator, context) {
        var result;
        this.each(function(value, index) {
            if (iterator.call(context, value, index)) {
                result = value;
                throw $break;
            }
        });
        return result;
    }

    function findAll(iterator, context) {
        var results = [];
        this.each(function(value, index) {
            if (iterator.call(context, value, index)) results.push(value);
        });
        return results;
    }

    function grep(filter, iterator, context) {
        iterator = iterator || Prototype.K;
        var results = [];

        if (Object.isString(filter)) filter = new RegExp(RegExp.escape(filter));

        this.each(function(value, index) {
            if (filter.match(value)) results.push(iterator.call(context, value, index));
        });
        return results;
    }

    function include(object) {
        if (Object.isFunction(this.indexOf)) if (this.indexOf(object) != -1) return true;

        var found = false;
        this.each(function(value) {
            if (value == object) {
                found = true;
                throw $break;
            }
        });
        return found;
    }

    function inGroupsOf(number, fillWith) {
        fillWith = Object.isUndefined(fillWith) ? null : fillWith;
        return this.eachSlice(number, function(slice) {
            while (slice.length < number) slice.push(fillWith);
            return slice;
        });
    }

    function inject(memo, iterator, context) {
        this.each(function(value, index) {
            memo = iterator.call(context, memo, value, index);
        });
        return memo;
    }

    function invoke(method) {
        var args = $A(arguments).slice(1);
        return this.map(function(value) {
            return value[method].apply(value, args);
        });
    }

    function max(iterator, context) {
        iterator = iterator || Prototype.K;
        var result;
        this.each(function(value, index) {
            value = iterator.call(context, value, index);
            if (result == null || value >= result) result = value;
        });
        return result;
    }

    function min(iterator, context) {
        iterator = iterator || Prototype.K;
        var result;
        this.each(function(value, index) {
            value = iterator.call(context, value, index);
            if (result == null || value < result) result = value;
        });
        return result;
    }

    function partition(iterator, context) {
        iterator = iterator || Prototype.K;
        var trues = [],
            falses = [];
        this.each(function(value, index) {
            (iterator.call(context, value, index) ? trues : falses).push(value);
        });
        return [trues, falses];
    }

    function pluck(property) {
        var results = [];
        this.each(function(value) {
            results.push(value[property]);
        });
        return results;
    }

    function reject(iterator, context) {
        var results = [];
        this.each(function(value, index) {
            if (!iterator.call(context, value, index)) results.push(value);
        });
        return results;
    }

    function sortBy(iterator, context) {
        return this.map(function(value, index) {
            return {
                value: value,
                criteria: iterator.call(context, value, index)
            };
        }).sort(function(left, right) {
            var a = left.criteria,
                b = right.criteria;
            return a < b ? -1 : a > b ? 1 : 0;
        }).pluck('value');
    }

    function toArray() {
        return this.map();
    }

    function zip() {
        var iterator = Prototype.K,
            args = $A(arguments);
        if (Object.isFunction(args.last())) iterator = args.pop();

        var collections = [this].concat(args).map($A);
        return this.map(function(value, index) {
            return iterator(collections.pluck(index));
        });
    }

    function size() {
        return this.toArray().length;
    }

    function inspect() {
        return '#<Enumerable:' + this.toArray().inspect() + '>';
    }









    return {
        each: each,
        eachSlice: eachSlice,
        all: all,
        every: all,
        any: any,
        some: any,
        collect: collect,
        map: collect,
        detect: detect,
        findAll: findAll,
        select: findAll,
        filter: findAll,
        grep: grep,
        include: include,
        member: include,
        inGroupsOf: inGroupsOf,
        inject: inject,
        invoke: invoke,
        max: max,
        min: min,
        partition: partition,
        pluck: pluck,
        reject: reject,
        sortBy: sortBy,
        toArray: toArray,
        entries: toArray,
        zip: zip,
        size: size,
        inspect: inspect,
        find: detect
    };
})();

function $A(iterable) {
    if (!iterable) return [];
    if ('toArray' in Object(iterable)) return iterable.toArray();
    var length = iterable.length || 0,
        results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
}


function $w(string) {
    if (!Object.isString(string)) return [];
    string = string.strip();
    return string ? string.split(/\s+/) : [];
}

Array.from = $A;


(function() {
    var arrayProto = Array.prototype,
        slice = arrayProto.slice,
        _each = arrayProto.forEach; // use native browser JS 1.6 implementation if available

    function each(iterator, context) {
        for (var i = 0, length = this.length >>> 0; i < length; i++) {
            if (i in this) iterator.call(context, this[i], i, this);
        }
    }
    if (!_each) _each = each;

    function clear() {
        this.length = 0;
        return this;
    }

    function first() {
        return this[0];
    }

    function last() {
        return this[this.length - 1];
    }

    function compact() {
        return this.select(function(value) {
            return value != null;
        });
    }

    function flatten() {
        return this.inject([], function(array, value) {
            if (Object.isArray(value)) return array.concat(value.flatten());
            array.push(value);
            return array;
        });
    }

    function without() {
        var values = slice.call(arguments, 0);
        return this.select(function(value) {
            return !values.include(value);
        });
    }

    function reverse(inline) {
        return (inline === false ? this.toArray() : this)._reverse();
    }

    function uniq(sorted) {
        return this.inject([], function(array, value, index) {
            if (0 == index || (sorted ? array.last() != value : !array.include(value))) array.push(value);
            return array;
        });
    }

    function intersect(array) {
        return this.uniq().findAll(function(item) {
            return array.detect(function(value) {
                return item === value
            });
        });
    }


    function clone() {
        return slice.call(this, 0);
    }

    function size() {
        return this.length;
    }

    function inspect() {
        return '[' + this.map(Object.inspect).join(', ') + ']';
    }

    function indexOf(item, i) {
        i || (i = 0);
        var length = this.length;
        if (i < 0) i = length + i;
        for (; i < length; i++)
        if (this[i] === item) return i;
        return -1;
    }

    function lastIndexOf(item, i) {
        i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
        var n = this.slice(0, i).reverse().indexOf(item);
        return (n < 0) ? n : i - n - 1;
    }

    function concat() {
        var array = slice.call(this, 0),
            item;
        for (var i = 0, length = arguments.length; i < length; i++) {
            item = arguments[i];
            if (Object.isArray(item) && !('callee' in item)) {
                for (var j = 0, arrayLength = item.length; j < arrayLength; j++)
                array.push(item[j]);
            } else {
                array.push(item);
            }
        }
        return array;
    }

    Object.extend(arrayProto, Enumerable);

    if (!arrayProto._reverse) arrayProto._reverse = arrayProto.reverse;

    Object.extend(arrayProto, {
        _each: _each,
        clear: clear,
        first: first,
        last: last,
        compact: compact,
        flatten: flatten,
        without: without,
        reverse: reverse,
        uniq: uniq,
        intersect: intersect,
        clone: clone,
        toArray: clone,
        size: size,
        inspect: inspect
    });

    var CONCAT_ARGUMENTS_BUGGY = (function() {
        return [].concat(arguments)[0][0] !== 1;
    })(1, 2)

    if (CONCAT_ARGUMENTS_BUGGY) arrayProto.concat = concat;

    if (!arrayProto.indexOf) arrayProto.indexOf = indexOf;
    if (!arrayProto.lastIndexOf) arrayProto.lastIndexOf = lastIndexOf;
})();

function $H(object) {
    return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {
    function initialize(object) {
        this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    }


    function _each(iterator) {
        for (var key in this._object) {
            var value = this._object[key],
                pair = [key, value];
            pair.key = key;
            pair.value = value;
            iterator(pair);
        }
    }

    function set(key, value) {
        return this._object[key] = value;
    }

    function get(key) {
        if (this._object[key] !== Object.prototype[key]) return this._object[key];
    }

    function unset(key) {
        var value = this._object[key];
        delete this._object[key];
        return value;
    }

    function toObject() {
        return Object.clone(this._object);
    }



    function keys() {
        return this.pluck('key');
    }

    function values() {
        return this.pluck('value');
    }

    function index(value) {
        var match = this.detect(function(pair) {
            return pair.value === value;
        });
        return match && match.key;
    }

    function merge(object) {
        return this.clone().update(object);
    }

    function update(object) {
        return new Hash(object).inject(this, function(result, pair) {
            result.set(pair.key, pair.value);
            return result;
        });
    }

    function toQueryPair(key, value) {
        if (Object.isUndefined(value)) return key;
        return key + '=' + encodeURIComponent(String.interpret(value));
    }

    function toQueryString() {
        return this.inject([], function(results, pair) {
            var key = encodeURIComponent(pair.key),
                values = pair.value;

            if (values && typeof values == 'object') {
                if (Object.isArray(values)) {
                    var queryValues = [];
                    for (var i = 0, len = values.length, value; i < len; i++) {
                        value = values[i];
                        queryValues.push(toQueryPair(key, value));
                    }
                    return results.concat(queryValues);
                }
            } else results.push(toQueryPair(key, values));
            return results;
        }).join('&');
    }

    function inspect() {
        return '#<Hash:{' + this.map(function(pair) {
            return pair.map(Object.inspect).join(': ');
        }).join(', ') + '}>';
    }

    function clone() {
        return new Hash(this);
    }

    return {
        initialize: initialize,
        _each: _each,
        set: set,
        get: get,
        unset: unset,
        toObject: toObject,
        toTemplateReplacements: toObject,
        keys: keys,
        values: values,
        index: index,
        merge: merge,
        update: update,
        toQueryString: toQueryString,
        inspect: inspect,
        toJSON: toObject,
        clone: clone
    };
})());

Hash.from = $H;
Object.extend(Number.prototype, (function() {
    function toColorPart() {
        return this.toPaddedString(2, 16);
    }

    function succ() {
        return this + 1;
    }

    function times(iterator, context) {
        $R(0, this, true).each(iterator, context);
        return this;
    }

    function toPaddedString(length, radix) {
        var string = this.toString(radix || 10);
        return '0'.times(length - string.length) + string;
    }

    function abs() {
        return Math.abs(this);
    }

    function round() {
        return Math.round(this);
    }

    function ceil() {
        return Math.ceil(this);
    }

    function floor() {
        return Math.floor(this);
    }

    return {
        toColorPart: toColorPart,
        succ: succ,
        times: times,
        toPaddedString: toPaddedString,
        abs: abs,
        round: round,
        ceil: ceil,
        floor: floor
    };
})());

function $R(start, end, exclusive) {
    return new ObjectRange(start, end, exclusive);
}

var ObjectRange = Class.create(Enumerable, (function() {
    function initialize(start, end, exclusive) {
        this.start = start;
        this.end = end;
        this.exclusive = exclusive;
    }

    function _each(iterator) {
        var value = this.start;
        while (this.include(value)) {
            iterator(value);
            value = value.succ();
        }
    }

    function include(value) {
        if (value < this.start) return false;
        if (this.exclusive) return value < this.end;
        return value <= this.end;
    }

    return {
        initialize: initialize,
        _each: _each,
        include: include
    };
})());



var Abstract = {};


var Try = {
    these: function() {
        var returnValue;

        for (var i = 0, length = arguments.length; i < length; i++) {
            var lambda = arguments[i];
            try {
                returnValue = lambda();
                break;
            } catch (e) {}
        }

        return returnValue;
    }
};

var Ajax = {
    getTransport: function() {
        return Try.these(

        function() {
            return new XMLHttpRequest()
        }, function() {
            return new ActiveXObject('Msxml2.XMLHTTP')
        }, function() {
            return new ActiveXObject('Microsoft.XMLHTTP')
        }) || false;
    },

    activeRequestCount: 0
};

Ajax.Responders = {
    responders: [],

    _each: function(iterator) {
        this.responders._each(iterator);
    },

    register: function(responder) {
        if (!this.include(responder)) this.responders.push(responder);
    },

    unregister: function(responder) {
        this.responders = this.responders.without(responder);
    },

    dispatch: function(callback, request, transport, json) {
        this.each(function(responder) {
            if (Object.isFunction(responder[callback])) {
                try {
                    responder[callback].apply(responder, [request, transport, json]);
                } catch (e) {}
            }
        });
    }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
    onCreate: function() {
        Ajax.activeRequestCount++
    },
    onComplete: function() {
        Ajax.activeRequestCount--
    }
});
Ajax.Base = Class.create({
    initialize: function(options) {
        this.options = {
            method: 'post',
            asynchronous: true,
            contentType: 'application/x-www-form-urlencoded',
            encoding: 'UTF-8',
            parameters: '',
            evalJSON: true,
            evalJS: true
        };
        Object.extend(this.options, options || {});

        this.options.method = this.options.method.toLowerCase();

        if (Object.isHash(this.options.parameters)) this.options.parameters = this.options.parameters.toObject();
    }
});
Ajax.Request = Class.create(Ajax.Base, {
    _complete: false,

    initialize: function($super, url, options) {
        $super(options);
        this.transport = Ajax.getTransport();
        this.request(url);
    },

    request: function(url) {
        this.url = url;
        this.method = this.options.method;
        var params = Object.isString(this.options.parameters) ? this.options.parameters : Object.toQueryString(this.options.parameters);

        if (!['get', 'post'].include(this.method)) {
            params += (params ? '&' : '') + "_method=" + this.method;
            this.method = 'post';
        }

        if (params && this.method === 'get') {
            this.url += (this.url.include('?') ? '&' : '?') + params;
        }

        this.parameters = params.toQueryParams();

        try {
            var response = new Ajax.Response(this);
            if (this.options.onCreate) this.options.onCreate(response);
            Ajax.Responders.dispatch('onCreate', this, response);

            this.transport.open(this.method.toUpperCase(), this.url, this.options.asynchronous);

            if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

            this.transport.onreadystatechange = this.onStateChange.bind(this);
            this.setRequestHeaders();

            this.body = this.method == 'post' ? (this.options.postBody || params) : null;
            this.transport.send(this.body);

            /* Force Firefox to handle ready state 4 for synchronous requests */
            if (!this.options.asynchronous && this.transport.overrideMimeType) this.onStateChange();

        } catch (e) {
            this.dispatchException(e);
        }
    },

    onStateChange: function() {
        var readyState = this.transport.readyState;
        if (readyState > 1 && !((readyState == 4) && this._complete)) this.respondToReadyState(this.transport.readyState);
    },

    setRequestHeaders: function() {
        var headers = {
            'X-Requested-With': 'XMLHttpRequest',
            'X-Prototype-Version': Prototype.Version,
            'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
        };

        if (this.method == 'post') {
            headers['Content-type'] = this.options.contentType + (this.options.encoding ? '; charset=' + this.options.encoding : '');

/* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
            if (this.transport.overrideMimeType && (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0, 2005])[1] < 2005) headers['Connection'] = 'close';
        }

        if (typeof this.options.requestHeaders == 'object') {
            var extras = this.options.requestHeaders;

            if (Object.isFunction(extras.push)) for (var i = 0, length = extras.length; i < length; i += 2)
            headers[extras[i]] = extras[i + 1];
            else
            $H(extras).each(function(pair) {
                headers[pair.key] = pair.value
            });
        }

        for (var name in headers)
        this.transport.setRequestHeader(name, headers[name]);
    },

    success: function() {
        var status = this.getStatus();
        return !status || (status >= 200 && status < 300) || status == 304;
    },

    getStatus: function() {
        try {
            if (this.transport.status === 1223) return 204;
            return this.transport.status || 0;
        } catch (e) {
            return 0
        }
    },

    respondToReadyState: function(readyState) {
        var state = Ajax.Request.Events[readyState],
            response = new Ajax.Response(this);

        if (state == 'Complete') {
            try {
                this._complete = true;
                (this.options['on' + response.status] || this.options['on' + (this.success() ? 'Success' : 'Failure')] || Prototype.emptyFunction)(response, response.headerJSON);
            } catch (e) {
                this.dispatchException(e);
            }

            var contentType = response.getHeader('Content-type');
            if (this.options.evalJS == 'force' || (this.options.evalJS && this.isSameOrigin() && contentType && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i))) this.evalResponse();
        }

        try {
            (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
            Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
        } catch (e) {
            this.dispatchException(e);
        }

        if (state == 'Complete') {
            this.transport.onreadystatechange = Prototype.emptyFunction;
        }
    },

    isSameOrigin: function() {
        var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
        return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
            protocol: location.protocol,
            domain: document.domain,
            port: location.port ? ':' + location.port : ''
        }));
    },

    getHeader: function(name) {
        try {
            return this.transport.getResponseHeader(name) || null;
        } catch (e) {
            return null;
        }
    },

    evalResponse: function() {
        try {
            return eval((this.transport.responseText || '').unfilterJSON());
        } catch (e) {
            this.dispatchException(e);
        }
    },

    dispatchException: function(exception) {
        (this.options.onException || Prototype.emptyFunction)(this, exception);
        Ajax.Responders.dispatch('onException', this, exception);
    }
});

Ajax.Request.Events = ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];








Ajax.Response = Class.create({
    initialize: function(request) {
        this.request = request;
        var transport = this.transport = request.transport,
            readyState = this.readyState = transport.readyState;

        if ((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
            this.status = this.getStatus();
            this.statusText = this.getStatusText();
            this.responseText = String.interpret(transport.responseText);
            this.headerJSON = this._getHeaderJSON();
        }

        if (readyState == 4) {
            var xml = transport.responseXML;
            this.responseXML = Object.isUndefined(xml) ? null : xml;
            this.responseJSON = this._getResponseJSON();
        }
    },

    status: 0,

    statusText: '',

    getStatus: Ajax.Request.prototype.getStatus,

    getStatusText: function() {
        try {
            return this.transport.statusText || '';
        } catch (e) {
            return ''
        }
    },

    getHeader: Ajax.Request.prototype.getHeader,

    getAllHeaders: function() {
        try {
            return this.getAllResponseHeaders();
        } catch (e) {
            return null
        }
    },

    getResponseHeader: function(name) {
        return this.transport.getResponseHeader(name);
    },

    getAllResponseHeaders: function() {
        return this.transport.getAllResponseHeaders();
    },

    _getHeaderJSON: function() {
        var json = this.getHeader('X-JSON');
        if (!json) return null;
        json = decodeURIComponent(escape(json));
        try {
            return json.evalJSON(this.request.options.sanitizeJSON || !this.request.isSameOrigin());
        } catch (e) {
            this.request.dispatchException(e);
        }
    },

    _getResponseJSON: function() {
        var options = this.request.options;
        if (!options.evalJSON || (options.evalJSON != 'force' && !(this.getHeader('Content-type') || '').include('application/json')) || this.responseText.blank()) return null;
        try {
            return this.responseText.evalJSON(options.sanitizeJSON || !this.request.isSameOrigin());
        } catch (e) {
            this.request.dispatchException(e);
        }
    }
});

Ajax.Updater = Class.create(Ajax.Request, {
    initialize: function($super, container, url, options) {
        this.container = {
            success: (container.success || container),
            failure: (container.failure || (container.success ? null : container))
        };

        options = Object.clone(options);
        var onComplete = options.onComplete;
        options.onComplete = (function(response, json) {
            this.updateContent(response.responseText);
            if (Object.isFunction(onComplete)) onComplete(response, json);
        }).bind(this);

        $super(url, options);
    },

    updateContent: function(responseText) {
        var receiver = this.container[this.success() ? 'success' : 'failure'],
            options = this.options;

        if (!options.evalScripts) responseText = responseText.stripScripts();

        if (receiver = $(receiver)) {
            if (options.insertion) {
                if (Object.isString(options.insertion)) {
                    var insertion = {};
                    insertion[options.insertion] = responseText;
                    receiver.insert(insertion);
                } else options.insertion(receiver, responseText);
            } else receiver.update(responseText);
        }
    }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
    initialize: function($super, container, url, options) {
        $super(options);
        this.onComplete = this.options.onComplete;

        this.frequency = (this.options.frequency || 2);
        this.decay = (this.options.decay || 1);

        this.updater = {};
        this.container = container;
        this.url = url;

        this.start();
    },

    start: function() {
        this.options.onComplete = this.updateComplete.bind(this);
        this.onTimerEvent();
    },

    stop: function() {
        this.updater.options.onComplete = undefined;
        clearTimeout(this.timer);
        (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
    },

    updateComplete: function(response) {
        if (this.options.decay) {
            this.decay = (response.responseText == this.lastText ? this.decay * this.options.decay : 1);

            this.lastText = response.responseText;
        }
        this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
    },

    onTimerEvent: function() {
        this.updater = new Ajax.Updater(this.container, this.url, this.options);
    }
});


function $(element) {
    if (arguments.length > 1) {
        for (var i = 0, elements = [], length = arguments.length; i < length; i++)
        elements.push($(arguments[i]));
        return elements;
    }
    if (Object.isString(element)) element = document.getElementById(element);
    return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
    document._getElementsByXPath = function(expression, parentElement) {
        var results = [];
        var query = document.evaluate(expression, $(parentElement) || document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
        for (var i = 0, length = query.snapshotLength; i < length; i++)
        results.push(Element.extend(query.snapshotItem(i)));
        return results;
    };
}

/*--------------------------------------------------------------------------*/

if (!Node) var Node = {};

if (!Node.ELEMENT_NODE) {
    Object.extend(Node, {
        ELEMENT_NODE: 1,
        ATTRIBUTE_NODE: 2,
        TEXT_NODE: 3,
        CDATA_SECTION_NODE: 4,
        ENTITY_REFERENCE_NODE: 5,
        ENTITY_NODE: 6,
        PROCESSING_INSTRUCTION_NODE: 7,
        COMMENT_NODE: 8,
        DOCUMENT_NODE: 9,
        DOCUMENT_TYPE_NODE: 10,
        DOCUMENT_FRAGMENT_NODE: 11,
        NOTATION_NODE: 12
    });
}



(function(global) {
    function shouldUseCache(tagName, attributes) {
        if (tagName === 'select') return false;
        if ('type' in attributes) return false;
        return true;
    }

    var HAS_EXTENDED_CREATE_ELEMENT_SYNTAX = (function() {
        try {
            var el = document.createElement('<input name="x">');
            return el.tagName.toLowerCase() === 'input' && el.name === 'x';
        } catch (err) {
            return false;
        }
    })();

    var element = global.Element;

    global.Element = function(tagName, attributes) {
        attributes = attributes || {};
        tagName = tagName.toLowerCase();
        var cache = Element.cache;

        if (HAS_EXTENDED_CREATE_ELEMENT_SYNTAX && attributes.name) {
            tagName = '<' + tagName + ' name="' + attributes.name + '">';
            delete attributes.name;
            return Element.writeAttribute(document.createElement(tagName), attributes);
        }

        if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));

        var node = shouldUseCache(tagName, attributes) ? cache[tagName].cloneNode(false) : document.createElement(tagName);

        return Element.writeAttribute(node, attributes);
    };

    Object.extend(global.Element, element || {});
    if (element) global.Element.prototype = element.prototype;

})(this);

Element.idCounter = 1;
Element.cache = {};

Element._purgeElement = function(element) {
    var uid = element._prototypeUID;
    if (uid) {
        Element.stopObserving(element);
        element._prototypeUID = void 0;
        delete Element.Storage[uid];
    }
}

Element.Methods = {
    visible: function(element) {
        return $(element).style.display != 'none';
    },

    toggle: function(element) {
        element = $(element);
        Element[Element.visible(element) ? 'hide' : 'show'](element);
        return element;
    },

    hide: function(element) {
        element = $(element);
        element.style.display = 'none';
        return element;
    },

    show: function(element) {
        element = $(element);
        element.style.display = '';
        return element;
    },

    remove: function(element) {
        element = $(element);
        element.parentNode.removeChild(element);
        return element;
    },

    update: (function() {

        var SELECT_ELEMENT_INNERHTML_BUGGY = (function() {
            var el = document.createElement("select"),
                isBuggy = true;
            el.innerHTML = "<option value=\"test\">test</option>";
            if (el.options && el.options[0]) {
                isBuggy = el.options[0].nodeName.toUpperCase() !== "OPTION";
            }
            el = null;
            return isBuggy;
        })();

        var TABLE_ELEMENT_INNERHTML_BUGGY = (function() {
            try {
                var el = document.createElement("table");
                if (el && el.tBodies) {
                    el.innerHTML = "<tbody><tr><td>test</td></tr></tbody>";
                    var isBuggy = typeof el.tBodies[0] == "undefined";
                    el = null;
                    return isBuggy;
                }
            } catch (e) {
                return true;
            }
        })();

        var LINK_ELEMENT_INNERHTML_BUGGY = (function() {
            try {
                var el = document.createElement('div');
                el.innerHTML = "<link>";
                var isBuggy = (el.childNodes.length === 0);
                el = null;
                return isBuggy;
            } catch (e) {
                return true;
            }
        })();

        var ANY_INNERHTML_BUGGY = SELECT_ELEMENT_INNERHTML_BUGGY || TABLE_ELEMENT_INNERHTML_BUGGY || LINK_ELEMENT_INNERHTML_BUGGY;

        var SCRIPT_ELEMENT_REJECTS_TEXTNODE_APPENDING = (function() {
            var s = document.createElement("script"),
                isBuggy = false;
            try {
                s.appendChild(document.createTextNode(""));
                isBuggy = !s.firstChild || s.firstChild && s.firstChild.nodeType !== 3;
            } catch (e) {
                isBuggy = true;
            }
            s = null;
            return isBuggy;
        })();


        function update(element, content) {
            element = $(element);
            var purgeElement = Element._purgeElement;

            var descendants = element.getElementsByTagName('*'),
                i = descendants.length;
            while (i--) purgeElement(descendants[i]);

            if (content && content.toElement) content = content.toElement();

            if (Object.isElement(content)) return element.update().insert(content);

            content = Object.toHTML(content);

            var tagName = element.tagName.toUpperCase();

            if (tagName === 'SCRIPT' && SCRIPT_ELEMENT_REJECTS_TEXTNODE_APPENDING) {
                element.text = content;
                return element;
            }

            if (ANY_INNERHTML_BUGGY) {
                if (tagName in Element._insertionTranslations.tags) {
                    while (element.firstChild) {
                        element.removeChild(element.firstChild);
                    }
                    Element._getContentFromAnonymousElement(tagName, content.stripScripts()).each(function(node) {
                        element.appendChild(node)
                    });
                } else if (LINK_ELEMENT_INNERHTML_BUGGY && Object.isString(content) && content.indexOf('<link') > -1) {
                    while (element.firstChild) {
                        element.removeChild(element.firstChild);
                    }
                    var nodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts(), true);
                    nodes.each(function(node) {
                        element.appendChild(node)
                    });
                } else {
                    element.innerHTML = content.stripScripts();
                }
            } else {
                element.innerHTML = content.stripScripts();
            }

            content.evalScripts.bind(content).defer();
            return element;
        }

        return update;
    })(),

    replace: function(element, content) {
        element = $(element);
        if (content && content.toElement) content = content.toElement();
        else if (!Object.isElement(content)) {
            content = Object.toHTML(content);
            var range = element.ownerDocument.createRange();
            range.selectNode(element);
            content.evalScripts.bind(content).defer();
            content = range.createContextualFragment(content.stripScripts());
        }
        element.parentNode.replaceChild(content, element);
        return element;
    },

    insert: function(element, insertions) {
        element = $(element);

        if (Object.isString(insertions) || Object.isNumber(insertions) || Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML))) insertions = {
            bottom: insertions
        };

        var content, insert, tagName, childNodes;

        for (var position in insertions) {
            content = insertions[position];
            position = position.toLowerCase();
            insert = Element._insertionTranslations[position];

            if (content && content.toElement) content = content.toElement();
            if (Object.isElement(content)) {
                insert(element, content);
                continue;
            }

            content = Object.toHTML(content);

            tagName = ((position == 'before' || position == 'after') ? element.parentNode : element).tagName.toUpperCase();

            childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

            if (position == 'top' || position == 'after') childNodes.reverse();
            childNodes.each(insert.curry(element));

            content.evalScripts.bind(content).defer();
        }

        return element;
    },

    wrap: function(element, wrapper, attributes) {
        element = $(element);
        if (Object.isElement(wrapper)) $(wrapper).writeAttribute(attributes || {});
        else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
        else wrapper = new Element('div', wrapper);
        if (element.parentNode) element.parentNode.replaceChild(wrapper, element);
        wrapper.appendChild(element);
        return wrapper;
    },

    inspect: function(element) {
        element = $(element);
        var result = '<' + element.tagName.toLowerCase();
        $H({
            'id': 'id',
            'className': 'class'
        }).each(function(pair) {
            var property = pair.first(),
                attribute = pair.last(),
                value = (element[property] || '').toString();
            if (value) result += ' ' + attribute + '=' + value.inspect(true);
        });
        return result + '>';
    },

    recursivelyCollect: function(element, property, maximumLength) {
        element = $(element);
        maximumLength = maximumLength || -1;
        var elements = [];

        while (element = element[property]) {
            if (element.nodeType == 1) elements.push(Element.extend(element));
            if (elements.length == maximumLength) break;
        }

        return elements;
    },

    ancestors: function(element) {
        return Element.recursivelyCollect(element, 'parentNode');
    },

    descendants: function(element) {
        return Element.select(element, "*");
    },

    firstDescendant: function(element) {
        element = $(element).firstChild;
        while (element && element.nodeType != 1) element = element.nextSibling;
        return $(element);
    },

    immediateDescendants: function(element) {
        var results = [],
            child = $(element).firstChild;
        while (child) {
            if (child.nodeType === 1) {
                results.push(Element.extend(child));
            }
            child = child.nextSibling;
        }
        return results;
    },

    previousSiblings: function(element, maximumLength) {
        return Element.recursivelyCollect(element, 'previousSibling');
    },

    nextSiblings: function(element) {
        return Element.recursivelyCollect(element, 'nextSibling');
    },

    siblings: function(element) {
        element = $(element);
        return Element.previousSiblings(element).reverse().concat(Element.nextSiblings(element));
    },

    match: function(element, selector) {
        element = $(element);
        if (Object.isString(selector)) return Prototype.Selector.match(element, selector);
        return selector.match(element);
    },

    up: function(element, expression, index) {
        element = $(element);
        if (arguments.length == 1) return $(element.parentNode);
        var ancestors = Element.ancestors(element);
        return Object.isNumber(expression) ? ancestors[expression] : Prototype.Selector.find(ancestors, expression, index);
    },

    down: function(element, expression, index) {
        element = $(element);
        if (arguments.length == 1) return Element.firstDescendant(element);
        return Object.isNumber(expression) ? Element.descendants(element)[expression] : Element.select(element, expression)[index || 0];
    },

    previous: function(element, expression, index) {
        element = $(element);
        if (Object.isNumber(expression)) index = expression, expression = false;
        if (!Object.isNumber(index)) index = 0;

        if (expression) {
            return Prototype.Selector.find(element.previousSiblings(), expression, index);
        } else {
            return element.recursivelyCollect("previousSibling", index + 1)[index];
        }
    },

    next: function(element, expression, index) {
        element = $(element);
        if (Object.isNumber(expression)) index = expression, expression = false;
        if (!Object.isNumber(index)) index = 0;

        if (expression) {
            return Prototype.Selector.find(element.nextSiblings(), expression, index);
        } else {
            var maximumLength = Object.isNumber(index) ? index + 1 : 1;
            return element.recursivelyCollect("nextSibling", index + 1)[index];
        }
    },


    select: function(element) {
        element = $(element);
        var expressions = Array.prototype.slice.call(arguments, 1).join(', ');
        return Prototype.Selector.select(expressions, element);
    },

    adjacent: function(element) {
        element = $(element);
        var expressions = Array.prototype.slice.call(arguments, 1).join(', ');
        return Prototype.Selector.select(expressions, element.parentNode).without(element);
    },

    identify: function(element) {
        element = $(element);
        var id = Element.readAttribute(element, 'id');
        if (id) return id;
        do {
            id = 'anonymous_element_' + Element.idCounter++
        } while ($(id));
        Element.writeAttribute(element, 'id', id);
        return id;
    },

    readAttribute: function(element, name) {
        element = $(element);
        if (Prototype.Browser.IE) {
            var t = Element._attributeTranslations.read;
            if (t.values[name]) return t.values[name](element, name);
            if (t.names[name]) name = t.names[name];
            if (name.include(':')) {
                return (!element.attributes || !element.attributes[name]) ? null : element.attributes[name].value;
            }
        }
        return element.getAttribute(name);
    },

    writeAttribute: function(element, name, value) {
        element = $(element);
        var attributes = {},
            t = Element._attributeTranslations.write;

        if (typeof name == 'object') attributes = name;
        else attributes[name] = Object.isUndefined(value) ? true : value;

        for (var attr in attributes) {
            name = t.names[attr] || attr;
            value = attributes[attr];
            if (t.values[attr]) name = t.values[attr](element, value);
            if (value === false || value === null) element.removeAttribute(name);
            else if (value === true) element.setAttribute(name, name);
            else element.setAttribute(name, value);
        }
        return element;
    },

    getHeight: function(element) {
        return Element.getDimensions(element).height;
    },

    getWidth: function(element) {
        return Element.getDimensions(element).width;
    },

    classNames: function(element) {
        return new Element.ClassNames(element);
    },

    hasClassName: function(element, className) {
        if (!(element = $(element))) return;
        var elementClassName = element.className;
        return (elementClassName.length > 0 && (elementClassName == className || new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
    },

    addClassName: function(element, className) {
        if (!(element = $(element))) return;
        if (!Element.hasClassName(element, className)) element.className += (element.className ? ' ' : '') + className;
        return element;
    },

    removeClassName: function(element, className) {
        if (!(element = $(element))) return;
        element.className = element.className.replace(
        new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
        return element;
    },

    toggleClassName: function(element, className) {
        if (!(element = $(element))) return;
        return Element[Element.hasClassName(element, className) ? 'removeClassName' : 'addClassName'](element, className);
    },

    cleanWhitespace: function(element) {
        element = $(element);
        var node = element.firstChild;
        while (node) {
            var nextNode = node.nextSibling;
            if (node.nodeType == 3 && !/\S/.test(node.nodeValue)) element.removeChild(node);
            node = nextNode;
        }
        return element;
    },

    empty: function(element) {
        return $(element).innerHTML.blank();
    },

    descendantOf: function(element, ancestor) {
        element = $(element), ancestor = $(ancestor);

        if (element.compareDocumentPosition) return (element.compareDocumentPosition(ancestor) & 8) === 8;

        if (ancestor.contains) return ancestor.contains(element) && ancestor !== element;

        while (element = element.parentNode)
        if (element == ancestor) return true;

        return false;
    },

    scrollTo: function(element) {
        element = $(element);
        var pos = Element.cumulativeOffset(element);
        window.scrollTo(pos[0], pos[1]);
        return element;
    },

    getStyle: function(element, style) {
        element = $(element);
        style = style == 'float' ? 'cssFloat' : style.camelize();
        var value = element.style[style];
        if (!value || value == 'auto') {
            var css = document.defaultView.getComputedStyle(element, null);
            value = css ? css[style] : null;
        }
        if (style == 'opacity') return value ? parseFloat(value) : 1.0;
        return value == 'auto' ? null : value;
    },

    getOpacity: function(element) {
        return $(element).getStyle('opacity');
    },

    setStyle: function(element, styles) {
        element = $(element);
        var elementStyle = element.style,
            match;
        if (Object.isString(styles)) {
            element.style.cssText += ';' + styles;
            return styles.include('opacity') ? element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
        }
        for (var property in styles)
        if (property == 'opacity') element.setOpacity(styles[property]);
        else
        elementStyle[(property == 'float' || property == 'cssFloat') ? (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') : property] = styles[property];

        return element;
    },

    setOpacity: function(element, value) {
        element = $(element);
        element.style.opacity = (value == 1 || value === '') ? '' : (value < 0.00001) ? 0 : value;
        return element;
    },

    makePositioned: function(element) {
        element = $(element);
        var pos = Element.getStyle(element, 'position');
        if (pos == 'static' || !pos) {
            element._madePositioned = true;
            element.style.position = 'relative';
            if (Prototype.Browser.Opera) {
                element.style.top = 0;
                element.style.left = 0;
            }
        }
        return element;
    },

    undoPositioned: function(element) {
        element = $(element);
        if (element._madePositioned) {
            element._madePositioned = undefined;
            element.style.position =
            element.style.top =
            element.style.left =
            element.style.bottom =
            element.style.right = '';
        }
        return element;
    },

    makeClipping: function(element) {
        element = $(element);
        if (element._overflow) return element;
        element._overflow = Element.getStyle(element, 'overflow') || 'auto';
        if (element._overflow !== 'hidden') element.style.overflow = 'hidden';
        return element;
    },

    undoClipping: function(element) {
        element = $(element);
        if (!element._overflow) return element;
        element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
        element._overflow = null;
        return element;
    },

    clonePosition: function(element, source) {
        var options = Object.extend({
            setLeft: true,
            setTop: true,
            setWidth: true,
            setHeight: true,
            offsetTop: 0,
            offsetLeft: 0
        }, arguments[2] || {});

        source = $(source);
        var p = Element.viewportOffset(source),
            delta = [0, 0],
            parent = null;

        element = $(element);

        if (Element.getStyle(element, 'position') == 'absolute') {
            parent = Element.getOffsetParent(element);
            delta = Element.viewportOffset(parent);
        }

        if (parent == document.body) {
            delta[0] -= document.body.offsetLeft;
            delta[1] -= document.body.offsetTop;
        }

        if (options.setLeft) element.style.left = (p[0] - delta[0] + options.offsetLeft) + 'px';
        if (options.setTop) element.style.top = (p[1] - delta[1] + options.offsetTop) + 'px';
        if (options.setWidth) element.style.width = source.offsetWidth + 'px';
        if (options.setHeight) element.style.height = source.offsetHeight + 'px';
        return element;
    }
};

Object.extend(Element.Methods, {
    getElementsBySelector: Element.Methods.select,

    childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
    write: {
        names: {
            className: 'class',
            htmlFor: 'for'
        },
        values: {}
    }
};

if (Prototype.Browser.Opera) {
    Element.Methods.getStyle = Element.Methods.getStyle.wrap(

    function(proceed, element, style) {
        switch (style) {
        case 'height':
        case 'width':
            if (!Element.visible(element)) return null;

            var dim = parseInt(proceed(element, style), 10);

            if (dim !== element['offset' + style.capitalize()]) return dim + 'px';

            var properties;
            if (style === 'height') {
                properties = ['border-top-width', 'padding-top', 'padding-bottom', 'border-bottom-width'];
            } else {
                properties = ['border-left-width', 'padding-left', 'padding-right', 'border-right-width'];
            }
            return properties.inject(dim, function(memo, property) {
                var val = proceed(element, property);
                return val === null ? memo : memo - parseInt(val, 10);
            }) + 'px';
        default:
            return proceed(element, style);
        }
    });

    Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(

    function(proceed, element, attribute) {
        if (attribute === 'title') return element.title;
        return proceed(element, attribute);
    });
} else if (Prototype.Browser.IE) {
    Element.Methods.getStyle = function(element, style) {
        element = $(element);
        style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
        var value = element.style[style];
        if (!value && element.currentStyle) value = element.currentStyle[style];

        if (style == 'opacity') {
            if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/)) if (value[1]) return parseFloat(value[1]) / 100;
            return 1.0;
        }

        if (value == 'auto') {
            if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none')) return element['offset' + style.capitalize()] + 'px';
            return null;
        }
        return value;
    };

    Element.Methods.setOpacity = function(element, value) {
        function stripAlpha(filter) {
            return filter.replace(/alpha\([^\)]*\)/gi, '');
        }
        element = $(element);
        var currentStyle = element.currentStyle;
        if ((currentStyle && !currentStyle.hasLayout) || (!currentStyle && element.style.zoom == 'normal')) element.style.zoom = 1;

        var filter = element.getStyle('filter'),
            style = element.style;
        if (value == 1 || value === '') {
            (filter = stripAlpha(filter)) ? style.filter = filter : style.removeAttribute('filter');
            return element;
        } else if (value < 0.00001) value = 0;
        style.filter = stripAlpha(filter) + 'alpha(opacity=' + (value * 100) + ')';
        return element;
    };

    Element._attributeTranslations = (function() {

        var classProp = 'className',
            forProp = 'for',
            el = document.createElement('div');

        el.setAttribute(classProp, 'x');

        if (el.className !== 'x') {
            el.setAttribute('class', 'x');
            if (el.className === 'x') {
                classProp = 'class';
            }
        }
        el = null;

        el = document.createElement('label');
        el.setAttribute(forProp, 'x');
        if (el.htmlFor !== 'x') {
            el.setAttribute('htmlFor', 'x');
            if (el.htmlFor === 'x') {
                forProp = 'htmlFor';
            }
        }
        el = null;

        return {
            read: {
                names: {
                    'class': classProp,
                    'className': classProp,
                    'for': forProp,
                    'htmlFor': forProp
                },
                values: {
                    _getAttr: function(element, attribute) {
                        return element.getAttribute(attribute);
                    },
                    _getAttr2: function(element, attribute) {
                        return element.getAttribute(attribute, 2);
                    },
                    _getAttrNode: function(element, attribute) {
                        var node = element.getAttributeNode(attribute);
                        return node ? node.value : "";
                    },
                    _getEv: (function() {

                        var el = document.createElement('div'),
                            f;
                        el.onclick = Prototype.emptyFunction;
                        var value = el.getAttribute('onclick');

                        if (String(value).indexOf('{') > -1) {
                            f = function(element, attribute) {
                                attribute = element.getAttribute(attribute);
                                if (!attribute) return null;
                                attribute = attribute.toString();
                                attribute = attribute.split('{')[1];
                                attribute = attribute.split('}')[0];
                                return attribute.strip();
                            };
                        } else if (value === '') {
                            f = function(element, attribute) {
                                attribute = element.getAttribute(attribute);
                                if (!attribute) return null;
                                return attribute.strip();
                            };
                        }
                        el = null;
                        return f;
                    })(),
                    _flag: function(element, attribute) {
                        return $(element).hasAttribute(attribute) ? attribute : null;
                    },
                    style: function(element) {
                        return element.style.cssText.toLowerCase();
                    },
                    title: function(element) {
                        return element.title;
                    }
                }
            }
        }
    })();

    Element._attributeTranslations.write = {
        names: Object.extend({
            cellpadding: 'cellPadding',
            cellspacing: 'cellSpacing'
        }, Element._attributeTranslations.read.names),
        values: {
            checked: function(element, value) {
                element.checked = !! value;
            },

            style: function(element, value) {
                element.style.cssText = value ? value : '';
            }
        }
    };

    Element._attributeTranslations.has = {};

    $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' + 'encType maxLength readOnly longDesc frameBorder').each(function(attr) {
        Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
        Element._attributeTranslations.has[attr.toLowerCase()] = attr;
    });

    (function(v) {
        Object.extend(v, {
            href: v._getAttr2,
            src: v._getAttr2,
            type: v._getAttr,
            action: v._getAttrNode,
            disabled: v._flag,
            checked: v._flag,
            readonly: v._flag,
            multiple: v._flag,
            onload: v._getEv,
            onunload: v._getEv,
            onclick: v._getEv,
            ondblclick: v._getEv,
            onmousedown: v._getEv,
            onmouseup: v._getEv,
            onmouseover: v._getEv,
            onmousemove: v._getEv,
            onmouseout: v._getEv,
            onfocus: v._getEv,
            onblur: v._getEv,
            onkeypress: v._getEv,
            onkeydown: v._getEv,
            onkeyup: v._getEv,
            onsubmit: v._getEv,
            onreset: v._getEv,
            onselect: v._getEv,
            onchange: v._getEv
        });
    })(Element._attributeTranslations.read.values);

    if (Prototype.BrowserFeatures.ElementExtensions) {
        (function() {
            function _descendants(element) {
                var nodes = element.getElementsByTagName('*'),
                    results = [];
                for (var i = 0, node; node = nodes[i]; i++)
                if (node.tagName !== "!") // Filter out comment nodes.
                results.push(node);
                return results;
            }

            Element.Methods.down = function(element, expression, index) {
                element = $(element);
                if (arguments.length == 1) return element.firstDescendant();
                return Object.isNumber(expression) ? _descendants(element)[expression] : Element.select(element, expression)[index || 0];
            }
        })();
    }

} else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
    Element.Methods.setOpacity = function(element, value) {
        element = $(element);
        element.style.opacity = (value == 1) ? 0.999999 : (value === '') ? '' : (value < 0.00001) ? 0 : value;
        return element;
    };
} else if (Prototype.Browser.WebKit) {
    Element.Methods.setOpacity = function(element, value) {
        element = $(element);
        element.style.opacity = (value == 1 || value === '') ? '' : (value < 0.00001) ? 0 : value;

        if (value == 1) if (element.tagName.toUpperCase() == 'IMG' && element.width) {
            element.width++;
            element.width--;
        } else
        try {
            var n = document.createTextNode(' ');
            element.appendChild(n);
            element.removeChild(n);
        } catch (e) {}

        return element;
    };
}

if ('outerHTML' in document.documentElement) {
    Element.Methods.replace = function(element, content) {
        element = $(element);

        if (content && content.toElement) content = content.toElement();
        if (Object.isElement(content)) {
            element.parentNode.replaceChild(content, element);
            return element;
        }

        content = Object.toHTML(content);
        var parent = element.parentNode,
            tagName = parent.tagName.toUpperCase();

        if (Element._insertionTranslations.tags[tagName]) {
            var nextSibling = element.next(),
                fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
            parent.removeChild(element);
            if (nextSibling) fragments.each(function(node) {
                parent.insertBefore(node, nextSibling)
            });
            else
            fragments.each(function(node) {
                parent.appendChild(node)
            });
        } else element.outerHTML = content.stripScripts();

        content.evalScripts.bind(content).defer();
        return element;
    };
}

Element._returnOffset = function(l, t) {
    var result = [l, t];
    result.left = l;
    result.top = t;
    return result;
};

Element._getContentFromAnonymousElement = function(tagName, html, force) {
    var div = new Element('div'),
        t = Element._insertionTranslations.tags[tagName];

    var workaround = false;
    if (t) workaround = true;
    else if (force) {
        workaround = true;
        t = ['', '', 0];
    }

    if (workaround) {
        div.innerHTML = '&nbsp;' + t[0] + html + t[1];
        div.removeChild(div.firstChild);
        for (var i = t[2]; i--;) {
            div = div.firstChild;
        }
    } else {
        div.innerHTML = html;
    }
    return $A(div.childNodes);
};

Element._insertionTranslations = {
    before: function(element, node) {
        element.parentNode.insertBefore(node, element);
    },
    top: function(element, node) {
        element.insertBefore(node, element.firstChild);
    },
    bottom: function(element, node) {
        element.appendChild(node);
    },
    after: function(element, node) {
        element.parentNode.insertBefore(node, element.nextSibling);
    },
    tags: {
        TABLE: ['<table>', '</table>', 1],
        TBODY: ['<table><tbody>', '</tbody></table>', 2],
        TR: ['<table><tbody><tr>', '</tr></tbody></table>', 3],
        TD: ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
        SELECT: ['<select>', '</select>', 1]
    }
};

(function() {
    var tags = Element._insertionTranslations.tags;
    Object.extend(tags, {
        THEAD: tags.TBODY,
        TFOOT: tags.TBODY,
        TH: tags.TD
    });
})();

Element.Methods.Simulated = {
    hasAttribute: function(element, attribute) {
        attribute = Element._attributeTranslations.has[attribute] || attribute;
        var node = $(element).getAttributeNode(attribute);
        return !!(node && node.specified);
    }
};

Element.Methods.ByTag = {};

Object.extend(Element, Element.Methods);

(function(div) {

    if (!Prototype.BrowserFeatures.ElementExtensions && div['__proto__']) {
        window.HTMLElement = {};
        window.HTMLElement.prototype = div['__proto__'];
        Prototype.BrowserFeatures.ElementExtensions = true;
    }

    div = null;

})(document.createElement('div'));

Element.extend = (function() {

    function checkDeficiency(tagName) {
        if (typeof window.Element != 'undefined') {
            var proto = window.Element.prototype;
            if (proto) {
                var id = '_' + (Math.random() + '').slice(2),
                    el = document.createElement(tagName);
                proto[id] = 'x';
                var isBuggy = (el[id] !== 'x');
                delete proto[id];
                el = null;
                return isBuggy;
            }
        }
        return false;
    }

    function extendElementWith(element, methods) {
        for (var property in methods) {
            var value = methods[property];
            if (Object.isFunction(value) && !(property in element)) element[property] = value.methodize();
        }
    }

    var HTMLOBJECTELEMENT_PROTOTYPE_BUGGY = checkDeficiency('object');

    if (Prototype.BrowserFeatures.SpecificElementExtensions) {
        if (HTMLOBJECTELEMENT_PROTOTYPE_BUGGY) {
            return function(element) {
                if (element && typeof element._extendedByPrototype == 'undefined') {
                    var t = element.tagName;
                    if (t && (/^(?:object|applet|embed)$/i.test(t))) {
                        extendElementWith(element, Element.Methods);
                        extendElementWith(element, Element.Methods.Simulated);
                        extendElementWith(element, Element.Methods.ByTag[t.toUpperCase()]);
                    }
                }
                return element;
            }
        }
        return Prototype.K;
    }

    var Methods = {},
        ByTag = Element.Methods.ByTag;

    var extend = Object.extend(function(element) {
        if (!element || typeof element._extendedByPrototype != 'undefined' || element.nodeType != 1 || element == window) return element;

        var methods = Object.clone(Methods),
            tagName = element.tagName.toUpperCase();

        if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

        extendElementWith(element, methods);

        element._extendedByPrototype = Prototype.emptyFunction;
        return element;

    }, {
        refresh: function() {
            if (!Prototype.BrowserFeatures.ElementExtensions) {
                Object.extend(Methods, Element.Methods);
                Object.extend(Methods, Element.Methods.Simulated);
            }
        }
    });

    extend.refresh();
    return extend;
})();

if (document.documentElement.hasAttribute) {
    Element.hasAttribute = function(element, attribute) {
        return element.hasAttribute(attribute);
    };
} else {
    Element.hasAttribute = Element.Methods.Simulated.hasAttribute;
}

Element.addMethods = function(methods) {
    var F = Prototype.BrowserFeatures,
        T = Element.Methods.ByTag;

    if (!methods) {
        Object.extend(Form, Form.Methods);
        Object.extend(Form.Element, Form.Element.Methods);
        Object.extend(Element.Methods.ByTag, {
            "FORM": Object.clone(Form.Methods),
            "INPUT": Object.clone(Form.Element.Methods),
            "SELECT": Object.clone(Form.Element.Methods),
            "TEXTAREA": Object.clone(Form.Element.Methods),
            "BUTTON": Object.clone(Form.Element.Methods)
        });
    }

    if (arguments.length == 2) {
        var tagName = methods;
        methods = arguments[1];
    }

    if (!tagName) Object.extend(Element.Methods, methods || {});
    else {
        if (Object.isArray(tagName)) tagName.each(extend);
        else extend(tagName);
    }

    function extend(tagName) {
        tagName = tagName.toUpperCase();
        if (!Element.Methods.ByTag[tagName]) Element.Methods.ByTag[tagName] = {};
        Object.extend(Element.Methods.ByTag[tagName], methods);
    }

    function copy(methods, destination, onlyIfAbsent) {
        onlyIfAbsent = onlyIfAbsent || false;
        for (var property in methods) {
            var value = methods[property];
            if (!Object.isFunction(value)) continue;
            if (!onlyIfAbsent || !(property in destination)) destination[property] = value.methodize();
        }
    }

    function findDOMClass(tagName) {
        var klass;
        var trans = {
            "OPTGROUP": "OptGroup",
            "TEXTAREA": "TextArea",
            "P": "Paragraph",
            "FIELDSET": "FieldSet",
            "UL": "UList",
            "OL": "OList",
            "DL": "DList",
            "DIR": "Directory",
            "H1": "Heading",
            "H2": "Heading",
            "H3": "Heading",
            "H4": "Heading",
            "H5": "Heading",
            "H6": "Heading",
            "Q": "Quote",
            "INS": "Mod",
            "DEL": "Mod",
            "A": "Anchor",
            "IMG": "Image",
            "CAPTION": "TableCaption",
            "COL": "TableCol",
            "COLGROUP": "TableCol",
            "THEAD": "TableSection",
            "TFOOT": "TableSection",
            "TBODY": "TableSection",
            "TR": "TableRow",
            "TH": "TableCell",
            "TD": "TableCell",
            "FRAMESET": "FrameSet",
            "IFRAME": "IFrame"
        };
        if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
        if (window[klass]) return window[klass];
        klass = 'HTML' + tagName + 'Element';
        if (window[klass]) return window[klass];
        klass = 'HTML' + tagName.capitalize() + 'Element';
        if (window[klass]) return window[klass];

        var element = document.createElement(tagName),
            proto = element['__proto__'] || element.constructor.prototype;

        element = null;
        return proto;
    }

    var elementPrototype = window.HTMLElement ? HTMLElement.prototype : Element.prototype;

    if (F.ElementExtensions) {
        copy(Element.Methods, elementPrototype);
        copy(Element.Methods.Simulated, elementPrototype, true);
    }

    if (F.SpecificElementExtensions) {
        for (var tag in Element.Methods.ByTag) {
            var klass = findDOMClass(tag);
            if (Object.isUndefined(klass)) continue;
            copy(T[tag], klass.prototype);
        }
    }

    Object.extend(Element, Element.Methods);
    delete Element.ByTag;

    if (Element.extend.refresh) Element.extend.refresh();
    Element.cache = {};
};


document.viewport = {

    getDimensions: function() {
        return {
            width: this.getWidth(),
            height: this.getHeight()
        };
    },

    getScrollOffsets: function() {
        return Element._returnOffset(
        window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft, window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
    }
};

(function(viewport) {
    var B = Prototype.Browser,
        doc = document,
        element, property = {};

    function getRootElement() {
        if (B.WebKit && !doc.evaluate) return document;

        if (B.Opera && window.parseFloat(window.opera.version()) < 9.5) return document.body;

        return document.documentElement;
    }

    function define(D) {
        if (!element) element = getRootElement();

        property[D] = 'client' + D;

        viewport['get' + D] = function() {
            return element[property[D]]
        };
        return viewport['get' + D]();
    }

    viewport.getWidth = define.curry('Width');

    viewport.getHeight = define.curry('Height');
})(document.viewport);


Element.Storage = {
    UID: 1
};

Element.addMethods({
    getStorage: function(element) {
        if (!(element = $(element))) return;

        var uid;
        if (element === window) {
            uid = 0;
        } else {
            if (typeof element._prototypeUID === "undefined") element._prototypeUID = Element.Storage.UID++;
            uid = element._prototypeUID;
        }

        if (!Element.Storage[uid]) Element.Storage[uid] = $H();

        return Element.Storage[uid];
    },

    store: function(element, key, value) {
        if (!(element = $(element))) return;

        if (arguments.length === 2) {
            Element.getStorage(element).update(key);
        } else {
            Element.getStorage(element).set(key, value);
        }

        return element;
    },

    retrieve: function(element, key, defaultValue) {
        if (!(element = $(element))) return;
        var hash = Element.getStorage(element),
            value = hash.get(key);

        if (Object.isUndefined(value)) {
            hash.set(key, defaultValue);
            value = defaultValue;
        }

        return value;
    },

    clone: function(element, deep) {
        if (!(element = $(element))) return;
        var clone = element.cloneNode(deep);
        clone._prototypeUID = void 0;
        if (deep) {
            var descendants = Element.select(clone, '*'),
                i = descendants.length;
            while (i--) {
                descendants[i]._prototypeUID = void 0;
            }
        }
        return Element.extend(clone);
    },

    purge: function(element) {
        if (!(element = $(element))) return;
        var purgeElement = Element._purgeElement;

        purgeElement(element);

        var descendants = element.getElementsByTagName('*'),
            i = descendants.length;

        while (i--) purgeElement(descendants[i]);

        return null;
    }
});

(function() {

    function toDecimal(pctString) {
        var match = pctString.match(/^(\d+)%?$/i);
        if (!match) return null;
        return (Number(match[1]) / 100);
    }

    function getPixelValue(value, property, context) {
        var element = null;
        if (Object.isElement(value)) {
            element = value;
            value = element.getStyle(property);
        }

        if (value === null) {
            return null;
        }

        if ((/^(?:-)?\d+(\.\d+)?(px)?$/i).test(value)) {
            return window.parseFloat(value);
        }

        var isPercentage = value.include('%'),
            isViewport = (context === document.viewport);

        if (/\d/.test(value) && element && element.runtimeStyle && !(isPercentage && isViewport)) {
            var style = element.style.left,
                rStyle = element.runtimeStyle.left;
            element.runtimeStyle.left = element.currentStyle.left;
            element.style.left = value || 0;
            value = element.style.pixelLeft;
            element.style.left = style;
            element.runtimeStyle.left = rStyle;

            return value;
        }

        if (element && isPercentage) {
            context = context || element.parentNode;
            var decimal = toDecimal(value);
            var whole = null;
            var position = element.getStyle('position');

            var isHorizontal = property.include('left') || property.include('right') || property.include('width');

            var isVertical = property.include('top') || property.include('bottom') || property.include('height');

            if (context === document.viewport) {
                if (isHorizontal) {
                    whole = document.viewport.getWidth();
                } else if (isVertical) {
                    whole = document.viewport.getHeight();
                }
            } else {
                if (isHorizontal) {
                    whole = $(context).measure('width');
                } else if (isVertical) {
                    whole = $(context).measure('height');
                }
            }

            return (whole === null) ? 0 : whole * decimal;
        }

        return 0;
    }

    function toCSSPixels(number) {
        if (Object.isString(number) && number.endsWith('px')) {
            return number;
        }
        return number + 'px';
    }

    function isDisplayed(element) {
        var originalElement = element;
        while (element && element.parentNode) {
            var display = element.getStyle('display');
            if (display === 'none') {
                return false;
            }
            element = $(element.parentNode);
        }
        return true;
    }

    var hasLayout = Prototype.K;
    if ('currentStyle' in document.documentElement) {
        hasLayout = function(element) {
            if (!element.currentStyle.hasLayout) {
                element.style.zoom = 1;
            }
            return element;
        };
    }

    function cssNameFor(key) {
        if (key.include('border')) key = key + '-width';
        return key.camelize();
    }

    Element.Layout = Class.create(Hash, {
        initialize: function($super, element, preCompute) {
            $super();
            this.element = $(element);

            Element.Layout.PROPERTIES.each(function(property) {
                this._set(property, null);
            }, this);

            if (preCompute) {
                this._preComputing = true;
                this._begin();
                Element.Layout.PROPERTIES.each(this._compute, this);
                this._end();
                this._preComputing = false;
            }
        },

        _set: function(property, value) {
            return Hash.prototype.set.call(this, property, value);
        },

        set: function(property, value) {
            throw "Properties of Element.Layout are read-only.";
        },

        get: function($super, property) {
            var value = $super(property);
            return value === null ? this._compute(property) : value;
        },

        _begin: function() {
            if (this._prepared) return;

            var element = this.element;
            if (isDisplayed(element)) {
                this._prepared = true;
                return;
            }

            var originalStyles = {
                position: element.style.position || '',
                width: element.style.width || '',
                visibility: element.style.visibility || '',
                display: element.style.display || ''
            };

            element.store('prototype_original_styles', originalStyles);

            var position = element.getStyle('position'),
                width = element.getStyle('width');

            if (width === "0px" || width === null) {
                element.style.display = 'block';
                width = element.getStyle('width');
            }

            var context = (position === 'fixed') ? document.viewport : element.parentNode;

            element.setStyle({
                position: 'absolute',
                visibility: 'hidden',
                display: 'block'
            });

            var positionedWidth = element.getStyle('width');

            var newWidth;
            if (width && (positionedWidth === width)) {
                newWidth = getPixelValue(element, 'width', context);
            } else if (position === 'absolute' || position === 'fixed') {
                newWidth = getPixelValue(element, 'width', context);
            } else {
                var parent = element.parentNode,
                    pLayout = $(parent).getLayout();

                newWidth = pLayout.get('width') - this.get('margin-left') - this.get('border-left') - this.get('padding-left') - this.get('padding-right') - this.get('border-right') - this.get('margin-right');
            }

            element.setStyle({
                width: newWidth + 'px'
            });

            this._prepared = true;
        },

        _end: function() {
            var element = this.element;
            var originalStyles = element.retrieve('prototype_original_styles');
            element.store('prototype_original_styles', null);
            element.setStyle(originalStyles);
            this._prepared = false;
        },

        _compute: function(property) {
            var COMPUTATIONS = Element.Layout.COMPUTATIONS;
            if (!(property in COMPUTATIONS)) {
                throw "Property not found.";
            }

            return this._set(property, COMPUTATIONS[property].call(this, this.element));
        },

        toObject: function() {
            var args = $A(arguments);
            var keys = (args.length === 0) ? Element.Layout.PROPERTIES : args.join(' ').split(' ');
            var obj = {};
            keys.each(function(key) {
                if (!Element.Layout.PROPERTIES.include(key)) return;
                var value = this.get(key);
                if (value != null) obj[key] = value;
            }, this);
            return obj;
        },

        toHash: function() {
            var obj = this.toObject.apply(this, arguments);
            return new Hash(obj);
        },

        toCSS: function() {
            var args = $A(arguments);
            var keys = (args.length === 0) ? Element.Layout.PROPERTIES : args.join(' ').split(' ');
            var css = {};

            keys.each(function(key) {
                if (!Element.Layout.PROPERTIES.include(key)) return;
                if (Element.Layout.COMPOSITE_PROPERTIES.include(key)) return;

                var value = this.get(key);
                if (value != null) css[cssNameFor(key)] = value + 'px';
            }, this);
            return css;
        },

        inspect: function() {
            return "#<Element.Layout>";
        }
    });

    Object.extend(Element.Layout, {
        PROPERTIES: $w('height width top left right bottom border-left border-right border-top border-bottom padding-left padding-right padding-top padding-bottom margin-top margin-bottom margin-left margin-right padding-box-width padding-box-height border-box-width border-box-height margin-box-width margin-box-height'),

        COMPOSITE_PROPERTIES: $w('padding-box-width padding-box-height margin-box-width margin-box-height border-box-width border-box-height'),

        COMPUTATIONS: {
            'height': function(element) {
                if (!this._preComputing) this._begin();

                var bHeight = this.get('border-box-height');
                if (bHeight <= 0) {
                    if (!this._preComputing) this._end();
                    return 0;
                }

                var bTop = this.get('border-top'),
                    bBottom = this.get('border-bottom');

                var pTop = this.get('padding-top'),
                    pBottom = this.get('padding-bottom');

                if (!this._preComputing) this._end();

                return bHeight - bTop - bBottom - pTop - pBottom;
            },

            'width': function(element) {
                if (!this._preComputing) this._begin();

                var bWidth = this.get('border-box-width');
                if (bWidth <= 0) {
                    if (!this._preComputing) this._end();
                    return 0;
                }

                var bLeft = this.get('border-left'),
                    bRight = this.get('border-right');

                var pLeft = this.get('padding-left'),
                    pRight = this.get('padding-right');

                if (!this._preComputing) this._end();

                return bWidth - bLeft - bRight - pLeft - pRight;
            },

            'padding-box-height': function(element) {
                var height = this.get('height'),
                    pTop = this.get('padding-top'),
                    pBottom = this.get('padding-bottom');

                return height + pTop + pBottom;
            },

            'padding-box-width': function(element) {
                var width = this.get('width'),
                    pLeft = this.get('padding-left'),
                    pRight = this.get('padding-right');

                return width + pLeft + pRight;
            },

            'border-box-height': function(element) {
                if (!this._preComputing) this._begin();
                var height = element.offsetHeight;
                if (!this._preComputing) this._end();
                return height;
            },

            'border-box-width': function(element) {
                if (!this._preComputing) this._begin();
                var width = element.offsetWidth;
                if (!this._preComputing) this._end();
                return width;
            },

            'margin-box-height': function(element) {
                var bHeight = this.get('border-box-height'),
                    mTop = this.get('margin-top'),
                    mBottom = this.get('margin-bottom');

                if (bHeight <= 0) return 0;

                return bHeight + mTop + mBottom;
            },

            'margin-box-width': function(element) {
                var bWidth = this.get('border-box-width'),
                    mLeft = this.get('margin-left'),
                    mRight = this.get('margin-right');

                if (bWidth <= 0) return 0;

                return bWidth + mLeft + mRight;
            },

            'top': function(element) {
                var offset = element.positionedOffset();
                return offset.top;
            },

            'bottom': function(element) {
                var offset = element.positionedOffset(),
                    parent = element.getOffsetParent(),
                    pHeight = parent.measure('height');

                var mHeight = this.get('border-box-height');

                return pHeight - mHeight - offset.top;
            },

            'left': function(element) {
                var offset = element.positionedOffset();
                return offset.left;
            },

            'right': function(element) {
                var offset = element.positionedOffset(),
                    parent = element.getOffsetParent(),
                    pWidth = parent.measure('width');

                var mWidth = this.get('border-box-width');

                return pWidth - mWidth - offset.left;
            },

            'padding-top': function(element) {
                return getPixelValue(element, 'paddingTop');
            },

            'padding-bottom': function(element) {
                return getPixelValue(element, 'paddingBottom');
            },

            'padding-left': function(element) {
                return getPixelValue(element, 'paddingLeft');
            },

            'padding-right': function(element) {
                return getPixelValue(element, 'paddingRight');
            },

            'border-top': function(element) {
                return getPixelValue(element, 'borderTopWidth');
            },

            'border-bottom': function(element) {
                return getPixelValue(element, 'borderBottomWidth');
            },

            'border-left': function(element) {
                return getPixelValue(element, 'borderLeftWidth');
            },

            'border-right': function(element) {
                return getPixelValue(element, 'borderRightWidth');
            },

            'margin-top': function(element) {
                return getPixelValue(element, 'marginTop');
            },

            'margin-bottom': function(element) {
                return getPixelValue(element, 'marginBottom');
            },

            'margin-left': function(element) {
                return getPixelValue(element, 'marginLeft');
            },

            'margin-right': function(element) {
                return getPixelValue(element, 'marginRight');
            }
        }
    });

    if ('getBoundingClientRect' in document.documentElement) {
        Object.extend(Element.Layout.COMPUTATIONS, {
            'right': function(element) {
                var parent = hasLayout(element.getOffsetParent());
                var rect = element.getBoundingClientRect(),
                    pRect = parent.getBoundingClientRect();

                return (pRect.right - rect.right).round();
            },

            'bottom': function(element) {
                var parent = hasLayout(element.getOffsetParent());
                var rect = element.getBoundingClientRect(),
                    pRect = parent.getBoundingClientRect();

                return (pRect.bottom - rect.bottom).round();
            }
        });
    }

    Element.Offset = Class.create({
        initialize: function(left, top) {
            this.left = left.round();
            this.top = top.round();

            this[0] = this.left;
            this[1] = this.top;
        },

        relativeTo: function(offset) {
            return new Element.Offset(
            this.left - offset.left, this.top - offset.top);
        },

        inspect: function() {
            return "#<Element.Offset left: #{left} top: #{top}>".interpolate(this);
        },

        toString: function() {
            return "[#{left}, #{top}]".interpolate(this);
        },

        toArray: function() {
            return [this.left, this.top];
        }
    });

    function getLayout(element, preCompute) {
        return new Element.Layout(element, preCompute);
    }

    function measure(element, property) {
        return $(element).getLayout().get(property);
    }

    function getDimensions(element) {
        element = $(element);
        var display = Element.getStyle(element, 'display');

        if (display && display !== 'none') {
            return {
                width: element.offsetWidth,
                height: element.offsetHeight
            };
        }

        var style = element.style;
        var originalStyles = {
            visibility: style.visibility,
            position: style.position,
            display: style.display
        };

        var newStyles = {
            visibility: 'hidden',
            display: 'block'
        };

        if (originalStyles.position !== 'fixed') newStyles.position = 'absolute';

        Element.setStyle(element, newStyles);

        var dimensions = {
            width: element.offsetWidth,
            height: element.offsetHeight
        };

        Element.setStyle(element, originalStyles);

        return dimensions;
    }

    function getOffsetParent(element) {
        element = $(element);

        if (isDocument(element) || isDetached(element) || isBody(element) || isHtml(element)) return $(document.body);

        var isInline = (Element.getStyle(element, 'display') === 'inline');
        if (!isInline && element.offsetParent) return $(element.offsetParent);

        while ((element = element.parentNode) && element !== document.body) {
            if (Element.getStyle(element, 'position') !== 'static') {
                return isHtml(element) ? $(document.body) : $(element);
            }
        }

        return $(document.body);
    }


    function cumulativeOffset(element) {
        element = $(element);
        var valueT = 0,
            valueL = 0;
        if (element.parentNode) {
            do {
                valueT += element.offsetTop || 0;
                valueL += element.offsetLeft || 0;
                element = element.offsetParent;
            } while (element);
        }
        return new Element.Offset(valueL, valueT);
    }

    function positionedOffset(element) {
        element = $(element);

        var layout = element.getLayout();

        var valueT = 0,
            valueL = 0;
        do {
            valueT += element.offsetTop || 0;
            valueL += element.offsetLeft || 0;
            element = element.offsetParent;
            if (element) {
                if (isBody(element)) break;
                var p = Element.getStyle(element, 'position');
                if (p !== 'static') break;
            }
        } while (element);

        valueL -= layout.get('margin-top');
        valueT -= layout.get('margin-left');

        return new Element.Offset(valueL, valueT);
    }

    function cumulativeScrollOffset(element) {
        var valueT = 0,
            valueL = 0;
        do {
            valueT += element.scrollTop || 0;
            valueL += element.scrollLeft || 0;
            element = element.parentNode;
        } while (element);
        return new Element.Offset(valueL, valueT);
    }

    function viewportOffset(forElement) {
        element = $(element);
        var valueT = 0,
            valueL = 0,
            docBody = document.body;

        var element = forElement;
        do {
            valueT += element.offsetTop || 0;
            valueL += element.offsetLeft || 0;
            if (element.offsetParent == docBody && Element.getStyle(element, 'position') == 'absolute') break;
        } while (element = element.offsetParent);

        element = forElement;
        do {
            if (element != docBody) {
                valueT -= element.scrollTop || 0;
                valueL -= element.scrollLeft || 0;
            }
        } while (element = element.parentNode);
        return new Element.Offset(valueL, valueT);
    }

    function absolutize(element) {
        element = $(element);

        if (Element.getStyle(element, 'position') === 'absolute') {
            return element;
        }

        var offsetParent = getOffsetParent(element);
        var eOffset = element.viewportOffset(),
            pOffset = offsetParent.viewportOffset();

        var offset = eOffset.relativeTo(pOffset);
        var layout = element.getLayout();

        element.store('prototype_absolutize_original_styles', {
            left: element.getStyle('left'),
            top: element.getStyle('top'),
            width: element.getStyle('width'),
            height: element.getStyle('height')
        });

        element.setStyle({
            position: 'absolute',
            top: offset.top + 'px',
            left: offset.left + 'px',
            width: layout.get('width') + 'px',
            height: layout.get('height') + 'px'
        });

        return element;
    }

    function relativize(element) {
        element = $(element);
        if (Element.getStyle(element, 'position') === 'relative') {
            return element;
        }

        var originalStyles =
        element.retrieve('prototype_absolutize_original_styles');

        if (originalStyles) element.setStyle(originalStyles);
        return element;
    }

    if (Prototype.Browser.IE) {
        getOffsetParent = getOffsetParent.wrap(

        function(proceed, element) {
            element = $(element);

            if (isDocument(element) || isDetached(element) || isBody(element) || isHtml(element)) return $(document.body);

            var position = element.getStyle('position');
            if (position !== 'static') return proceed(element);

            element.setStyle({
                position: 'relative'
            });
            var value = proceed(element);
            element.setStyle({
                position: position
            });
            return value;
        });

        positionedOffset = positionedOffset.wrap(function(proceed, element) {
            element = $(element);
            if (!element.parentNode) return new Element.Offset(0, 0);
            var position = element.getStyle('position');
            if (position !== 'static') return proceed(element);

            var offsetParent = element.getOffsetParent();
            if (offsetParent && offsetParent.getStyle('position') === 'fixed') hasLayout(offsetParent);

            element.setStyle({
                position: 'relative'
            });
            var value = proceed(element);
            element.setStyle({
                position: position
            });
            return value;
        });
    } else if (Prototype.Browser.Webkit) {
        cumulativeOffset = function(element) {
            element = $(element);
            var valueT = 0,
                valueL = 0;
            do {
                valueT += element.offsetTop || 0;
                valueL += element.offsetLeft || 0;
                if (element.offsetParent == document.body) if (Element.getStyle(element, 'position') == 'absolute') break;

                element = element.offsetParent;
            } while (element);

            return new Element.Offset(valueL, valueT);
        };
    }


    Element.addMethods({
        getLayout: getLayout,
        measure: measure,
        getDimensions: getDimensions,
        getOffsetParent: getOffsetParent,
        cumulativeOffset: cumulativeOffset,
        positionedOffset: positionedOffset,
        cumulativeScrollOffset: cumulativeScrollOffset,
        viewportOffset: viewportOffset,
        absolutize: absolutize,
        relativize: relativize
    });

    function isBody(element) {
        return element.nodeName.toUpperCase() === 'BODY';
    }

    function isHtml(element) {
        return element.nodeName.toUpperCase() === 'HTML';
    }

    function isDocument(element) {
        return element.nodeType === Node.DOCUMENT_NODE;
    }

    function isDetached(element) {
        return element !== document.body && !Element.descendantOf(element, document.body);
    }

    if ('getBoundingClientRect' in document.documentElement) {
        Element.addMethods({
            viewportOffset: function(element) {
                element = $(element);
                if (isDetached(element)) return new Element.Offset(0, 0);

                var rect = element.getBoundingClientRect(),
                    docEl = document.documentElement;
                return new Element.Offset(rect.left - docEl.clientLeft, rect.top - docEl.clientTop);
            }
        });
    }
})();
window.$$ = function() {
    var expression = $A(arguments).join(', ');
    return Prototype.Selector.select(expression, document);
};

Prototype.Selector = (function() {

    function select() {
        throw new Error('Method "Prototype.Selector.select" must be defined.');
    }

    function match() {
        throw new Error('Method "Prototype.Selector.match" must be defined.');
    }

    function find(elements, expression, index) {
        index = index || 0;
        var match = Prototype.Selector.match,
            length = elements.length,
            matchIndex = 0,
            i;

        for (i = 0; i < length; i++) {
            if (match(elements[i], expression) && index == matchIndex++) {
                return Element.extend(elements[i]);
            }
        }
    }

    function extendElements(elements) {
        for (var i = 0, length = elements.length; i < length; i++) {
            Element.extend(elements[i]);
        }
        return elements;
    }


    var K = Prototype.K;

    return {
        select: select,
        match: match,
        find: find,
        extendElements: (Element.extend === K) ? K : extendElements,
        extendElement: Element.extend
    };
})();
/*!
 * Sizzle CSS Selector Engine - v1.0
 *  Copyright 2009, The Dojo Foundation
 *  Released under the MIT, BSD, and GPL Licenses.
 *  More information: http://sizzlejs.com/
 */
(function() {

    var chunker = /((?:\((?:\([^()]+\)|[^()]+)+\)|\[(?:\[[^[\]]*\]|['"][^'"]*['"]|[^[\]'"]+)+\]|\\.|[^ >+~,(\[\\]+)+|[>+~])(\s*,\s*)?((?:.|\r|\n)*)/g,
        done = 0,
        toString = Object.prototype.toString,
        hasDuplicate = false,
        baseHasDuplicate = true;

    [0, 0].sort(function() {
        baseHasDuplicate = false;
        return 0;
    });

    var Sizzle = function(selector, context, results, seed) {
        results = results || [];
        var origContext = context = context || document;

        if (context.nodeType !== 1 && context.nodeType !== 9) {
            return [];
        }

        if (!selector || typeof selector !== "string") {
            return results;
        }

        var parts = [],
            m, set, checkSet, check, mode, extra, prune = true,
            contextXML = isXML(context),
            soFar = selector;

        while ((chunker.exec(""), m = chunker.exec(soFar)) !== null) {
            soFar = m[3];

            parts.push(m[1]);

            if (m[2]) {
                extra = m[3];
                break;
            }
        }

        if (parts.length > 1 && origPOS.exec(selector)) {
            if (parts.length === 2 && Expr.relative[parts[0]]) {
                set = posProcess(parts[0] + parts[1], context);
            } else {
                set = Expr.relative[parts[0]] ? [context] : Sizzle(parts.shift(), context);

                while (parts.length) {
                    selector = parts.shift();

                    if (Expr.relative[selector]) selector += parts.shift();

                    set = posProcess(selector, set);
                }
            }
        } else {
            if (!seed && parts.length > 1 && context.nodeType === 9 && !contextXML && Expr.match.ID.test(parts[0]) && !Expr.match.ID.test(parts[parts.length - 1])) {
                var ret = Sizzle.find(parts.shift(), context, contextXML);
                context = ret.expr ? Sizzle.filter(ret.expr, ret.set)[0] : ret.set[0];
            }

            if (context) {
                var ret = seed ? {
                    expr: parts.pop(),
                    set: makeArray(seed)
                } : Sizzle.find(parts.pop(), parts.length === 1 && (parts[0] === "~" || parts[0] === "+") && context.parentNode ? context.parentNode : context, contextXML);
                set = ret.expr ? Sizzle.filter(ret.expr, ret.set) : ret.set;

                if (parts.length > 0) {
                    checkSet = makeArray(set);
                } else {
                    prune = false;
                }

                while (parts.length) {
                    var cur = parts.pop(),
                        pop = cur;

                    if (!Expr.relative[cur]) {
                        cur = "";
                    } else {
                        pop = parts.pop();
                    }

                    if (pop == null) {
                        pop = context;
                    }

                    Expr.relative[cur](checkSet, pop, contextXML);
                }
            } else {
                checkSet = parts = [];
            }
        }

        if (!checkSet) {
            checkSet = set;
        }

        if (!checkSet) {
            throw "Syntax error, unrecognized expression: " + (cur || selector);
        }

        if (toString.call(checkSet) === "[object Array]") {
            if (!prune) {
                results.push.apply(results, checkSet);
            } else if (context && context.nodeType === 1) {
                for (var i = 0; checkSet[i] != null; i++) {
                    if (checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && contains(context, checkSet[i]))) {
                        results.push(set[i]);
                    }
                }
            } else {
                for (var i = 0; checkSet[i] != null; i++) {
                    if (checkSet[i] && checkSet[i].nodeType === 1) {
                        results.push(set[i]);
                    }
                }
            }
        } else {
            makeArray(checkSet, results);
        }

        if (extra) {
            Sizzle(extra, origContext, results, seed);
            Sizzle.uniqueSort(results);
        }

        return results;
    };

    Sizzle.uniqueSort = function(results) {
        if (sortOrder) {
            hasDuplicate = baseHasDuplicate;
            results.sort(sortOrder);

            if (hasDuplicate) {
                for (var i = 1; i < results.length; i++) {
                    if (results[i] === results[i - 1]) {
                        results.splice(i--, 1);
                    }
                }
            }
        }

        return results;
    };

    Sizzle.matches = function(expr, set) {
        return Sizzle(expr, null, null, set);
    };

    Sizzle.find = function(expr, context, isXML) {
        var set, match;

        if (!expr) {
            return [];
        }

        for (var i = 0, l = Expr.order.length; i < l; i++) {
            var type = Expr.order[i],
                match;

            if ((match = Expr.leftMatch[type].exec(expr))) {
                var left = match[1];
                match.splice(1, 1);

                if (left.substr(left.length - 1) !== "\\") {
                    match[1] = (match[1] || "").replace(/\\/g, "");
                    set = Expr.find[type](match, context, isXML);
                    if (set != null) {
                        expr = expr.replace(Expr.match[type], "");
                        break;
                    }
                }
            }
        }

        if (!set) {
            set = context.getElementsByTagName("*");
        }

        return {
            set: set,
            expr: expr
        };
    };

    Sizzle.filter = function(expr, set, inplace, not) {
        var old = expr,
            result = [],
            curLoop = set,
            match, anyFound, isXMLFilter = set && set[0] && isXML(set[0]);

        while (expr && set.length) {
            for (var type in Expr.filter) {
                if ((match = Expr.match[type].exec(expr)) != null) {
                    var filter = Expr.filter[type],
                        found, item;
                    anyFound = false;

                    if (curLoop == result) {
                        result = [];
                    }

                    if (Expr.preFilter[type]) {
                        match = Expr.preFilter[type](match, curLoop, inplace, result, not, isXMLFilter);

                        if (!match) {
                            anyFound = found = true;
                        } else if (match === true) {
                            continue;
                        }
                    }

                    if (match) {
                        for (var i = 0;
                        (item = curLoop[i]) != null; i++) {
                            if (item) {
                                found = filter(item, match, i, curLoop);
                                var pass = not ^ !! found;

                                if (inplace && found != null) {
                                    if (pass) {
                                        anyFound = true;
                                    } else {
                                        curLoop[i] = false;
                                    }
                                } else if (pass) {
                                    result.push(item);
                                    anyFound = true;
                                }
                            }
                        }
                    }

                    if (found !== undefined) {
                        if (!inplace) {
                            curLoop = result;
                        }

                        expr = expr.replace(Expr.match[type], "");

                        if (!anyFound) {
                            return [];
                        }

                        break;
                    }
                }
            }

            if (expr == old) {
                if (anyFound == null) {
                    throw "Syntax error, unrecognized expression: " + expr;
                } else {
                    break;
                }
            }

            old = expr;
        }

        return curLoop;
    };

    var Expr = Sizzle.selectors = {
        order: ["ID", "NAME", "TAG"],
        match: {
            ID: /#((?:[\w\u00c0-\uFFFF-]|\\.)+)/,
            CLASS: /\.((?:[\w\u00c0-\uFFFF-]|\\.)+)/,
            NAME: /\[name=['"]*((?:[\w\u00c0-\uFFFF-]|\\.)+)['"]*\]/,
            ATTR: /\[\s*((?:[\w\u00c0-\uFFFF-]|\\.)+)\s*(?:(\S?=)\s*(['"]*)(.*?)\3|)\s*\]/,
            TAG: /^((?:[\w\u00c0-\uFFFF\*-]|\\.)+)/,
            CHILD: /:(only|nth|last|first)-child(?:\((even|odd|[\dn+-]*)\))?/,
            POS: /:(nth|eq|gt|lt|first|last|even|odd)(?:\((\d*)\))?(?=[^-]|$)/,
            PSEUDO: /:((?:[\w\u00c0-\uFFFF-]|\\.)+)(?:\((['"]*)((?:\([^\)]+\)|[^\2\(\)]*)+)\2\))?/
        },
        leftMatch: {},
        attrMap: {
            "class": "className",
            "for": "htmlFor"
        },
        attrHandle: {
            href: function(elem) {
                return elem.getAttribute("href");
            }
        },
        relative: {
            "+": function(checkSet, part, isXML) {
                var isPartStr = typeof part === "string",
                    isTag = isPartStr && !/\W/.test(part),
                    isPartStrNotTag = isPartStr && !isTag;

                if (isTag && !isXML) {
                    part = part.toUpperCase();
                }

                for (var i = 0, l = checkSet.length, elem; i < l; i++) {
                    if ((elem = checkSet[i])) {
                        while ((elem = elem.previousSibling) && elem.nodeType !== 1) {}

                        checkSet[i] = isPartStrNotTag || elem && elem.nodeName === part ? elem || false : elem === part;
                    }
                }

                if (isPartStrNotTag) {
                    Sizzle.filter(part, checkSet, true);
                }
            },
            ">": function(checkSet, part, isXML) {
                var isPartStr = typeof part === "string";

                if (isPartStr && !/\W/.test(part)) {
                    part = isXML ? part : part.toUpperCase();

                    for (var i = 0, l = checkSet.length; i < l; i++) {
                        var elem = checkSet[i];
                        if (elem) {
                            var parent = elem.parentNode;
                            checkSet[i] = parent.nodeName === part ? parent : false;
                        }
                    }
                } else {
                    for (var i = 0, l = checkSet.length; i < l; i++) {
                        var elem = checkSet[i];
                        if (elem) {
                            checkSet[i] = isPartStr ? elem.parentNode : elem.parentNode === part;
                        }
                    }

                    if (isPartStr) {
                        Sizzle.filter(part, checkSet, true);
                    }
                }
            },
            "": function(checkSet, part, isXML) {
                var doneName = done++,
                    checkFn = dirCheck;

                if (!/\W/.test(part)) {
                    var nodeCheck = part = isXML ? part : part.toUpperCase();
                    checkFn = dirNodeCheck;
                }

                checkFn("parentNode", part, doneName, checkSet, nodeCheck, isXML);
            },
            "~": function(checkSet, part, isXML) {
                var doneName = done++,
                    checkFn = dirCheck;

                if (typeof part === "string" && !/\W/.test(part)) {
                    var nodeCheck = part = isXML ? part : part.toUpperCase();
                    checkFn = dirNodeCheck;
                }

                checkFn("previousSibling", part, doneName, checkSet, nodeCheck, isXML);
            }
        },
        find: {
            ID: function(match, context, isXML) {
                if (typeof context.getElementById !== "undefined" && !isXML) {
                    var m = context.getElementById(match[1]);
                    return m ? [m] : [];
                }
            },
            NAME: function(match, context, isXML) {
                if (typeof context.getElementsByName !== "undefined") {
                    var ret = [],
                        results = context.getElementsByName(match[1]);

                    for (var i = 0, l = results.length; i < l; i++) {
                        if (results[i].getAttribute("name") === match[1]) {
                            ret.push(results[i]);
                        }
                    }

                    return ret.length === 0 ? null : ret;
                }
            },
            TAG: function(match, context) {
                return context.getElementsByTagName(match[1]);
            }
        },
        preFilter: {
            CLASS: function(match, curLoop, inplace, result, not, isXML) {
                match = " " + match[1].replace(/\\/g, "") + " ";

                if (isXML) {
                    return match;
                }

                for (var i = 0, elem;
                (elem = curLoop[i]) != null; i++) {
                    if (elem) {
                        if (not ^ (elem.className && (" " + elem.className + " ").indexOf(match) >= 0)) {
                            if (!inplace) result.push(elem);
                        } else if (inplace) {
                            curLoop[i] = false;
                        }
                    }
                }

                return false;
            },
            ID: function(match) {
                return match[1].replace(/\\/g, "");
            },
            TAG: function(match, curLoop) {
                for (var i = 0; curLoop[i] === false; i++) {}
                return curLoop[i] && isXML(curLoop[i]) ? match[1] : match[1].toUpperCase();
            },
            CHILD: function(match) {
                if (match[1] == "nth") {
                    var test = /(-?)(\d*)n((?:\+|-)?\d*)/.exec(
                    match[2] == "even" && "2n" || match[2] == "odd" && "2n+1" || !/\D/.test(match[2]) && "0n+" + match[2] || match[2]);

                    match[2] = (test[1] + (test[2] || 1)) - 0;
                    match[3] = test[3] - 0;
                }

                match[0] = done++;

                return match;
            },
            ATTR: function(match, curLoop, inplace, result, not, isXML) {
                var name = match[1].replace(/\\/g, "");

                if (!isXML && Expr.attrMap[name]) {
                    match[1] = Expr.attrMap[name];
                }

                if (match[2] === "~=") {
                    match[4] = " " + match[4] + " ";
                }

                return match;
            },
            PSEUDO: function(match, curLoop, inplace, result, not) {
                if (match[1] === "not") {
                    if ((chunker.exec(match[3]) || "").length > 1 || /^\w/.test(match[3])) {
                        match[3] = Sizzle(match[3], null, null, curLoop);
                    } else {
                        var ret = Sizzle.filter(match[3], curLoop, inplace, true ^ not);
                        if (!inplace) {
                            result.push.apply(result, ret);
                        }
                        return false;
                    }
                } else if (Expr.match.POS.test(match[0]) || Expr.match.CHILD.test(match[0])) {
                    return true;
                }

                return match;
            },
            POS: function(match) {
                match.unshift(true);
                return match;
            }
        },
        filters: {
            enabled: function(elem) {
                return elem.disabled === false && elem.type !== "hidden";
            },
            disabled: function(elem) {
                return elem.disabled === true;
            },
            checked: function(elem) {
                return elem.checked === true;
            },
            selected: function(elem) {
                elem.parentNode.selectedIndex;
                return elem.selected === true;
            },
            parent: function(elem) {
                return !!elem.firstChild;
            },
            empty: function(elem) {
                return !elem.firstChild;
            },
            has: function(elem, i, match) {
                return !!Sizzle(match[3], elem).length;
            },
            header: function(elem) {
                return /h\d/i.test(elem.nodeName);
            },
            text: function(elem) {
                return "text" === elem.type;
            },
            radio: function(elem) {
                return "radio" === elem.type;
            },
            checkbox: function(elem) {
                return "checkbox" === elem.type;
            },
            file: function(elem) {
                return "file" === elem.type;
            },
            password: function(elem) {
                return "password" === elem.type;
            },
            submit: function(elem) {
                return "submit" === elem.type;
            },
            image: function(elem) {
                return "image" === elem.type;
            },
            reset: function(elem) {
                return "reset" === elem.type;
            },
            button: function(elem) {
                return "button" === elem.type || elem.nodeName.toUpperCase() === "BUTTON";
            },
            input: function(elem) {
                return /input|select|textarea|button/i.test(elem.nodeName);
            }
        },
        setFilters: {
            first: function(elem, i) {
                return i === 0;
            },
            last: function(elem, i, match, array) {
                return i === array.length - 1;
            },
            even: function(elem, i) {
                return i % 2 === 0;
            },
            odd: function(elem, i) {
                return i % 2 === 1;
            },
            lt: function(elem, i, match) {
                return i < match[3] - 0;
            },
            gt: function(elem, i, match) {
                return i > match[3] - 0;
            },
            nth: function(elem, i, match) {
                return match[3] - 0 == i;
            },
            eq: function(elem, i, match) {
                return match[3] - 0 == i;
            }
        },
        filter: {
            PSEUDO: function(elem, match, i, array) {
                var name = match[1],
                    filter = Expr.filters[name];

                if (filter) {
                    return filter(elem, i, match, array);
                } else if (name === "contains") {
                    return (elem.textContent || elem.innerText || "").indexOf(match[3]) >= 0;
                } else if (name === "not") {
                    var not = match[3];

                    for (var i = 0, l = not.length; i < l; i++) {
                        if (not[i] === elem) {
                            return false;
                        }
                    }

                    return true;
                }
            },
            CHILD: function(elem, match) {
                var type = match[1],
                    node = elem;
                switch (type) {
                case 'only':
                case 'first':
                    while ((node = node.previousSibling)) {
                        if (node.nodeType === 1) return false;
                    }
                    if (type == 'first') return true;
                    node = elem;
                case 'last':
                    while ((node = node.nextSibling)) {
                        if (node.nodeType === 1) return false;
                    }
                    return true;
                case 'nth':
                    var first = match[2],
                        last = match[3];

                    if (first == 1 && last == 0) {
                        return true;
                    }

                    var doneName = match[0],
                        parent = elem.parentNode;

                    if (parent && (parent.sizcache !== doneName || !elem.nodeIndex)) {
                        var count = 0;
                        for (node = parent.firstChild; node; node = node.nextSibling) {
                            if (node.nodeType === 1) {
                                node.nodeIndex = ++count;
                            }
                        }
                        parent.sizcache = doneName;
                    }

                    var diff = elem.nodeIndex - last;
                    if (first == 0) {
                        return diff == 0;
                    } else {
                        return (diff % first == 0 && diff / first >= 0);
                    }
                }
            },
            ID: function(elem, match) {
                return elem.nodeType === 1 && elem.getAttribute("id") === match;
            },
            TAG: function(elem, match) {
                return (match === "*" && elem.nodeType === 1) || elem.nodeName === match;
            },
            CLASS: function(elem, match) {
                return (" " + (elem.className || elem.getAttribute("class")) + " ").indexOf(match) > -1;
            },
            ATTR: function(elem, match) {
                var name = match[1],
                    result = Expr.attrHandle[name] ? Expr.attrHandle[name](elem) : elem[name] != null ? elem[name] : elem.getAttribute(name),
                    value = result + "",
                    type = match[2],
                    check = match[4];

                return result == null ? type === "!=" : type === "=" ? value === check : type === "*=" ? value.indexOf(check) >= 0 : type === "~=" ? (" " + value + " ").indexOf(check) >= 0 : !check ? value && result !== false : type === "!=" ? value != check : type === "^=" ? value.indexOf(check) === 0 : type === "$=" ? value.substr(value.length - check.length) === check : type === "|=" ? value === check || value.substr(0, check.length + 1) === check + "-" : false;
            },
            POS: function(elem, match, i, array) {
                var name = match[2],
                    filter = Expr.setFilters[name];

                if (filter) {
                    return filter(elem, i, match, array);
                }
            }
        }
    };

    var origPOS = Expr.match.POS;

    for (var type in Expr.match) {
        Expr.match[type] = new RegExp(Expr.match[type].source + /(?![^\[]*\])(?![^\(]*\))/.source);
        Expr.leftMatch[type] = new RegExp(/(^(?:.|\r|\n)*?)/.source + Expr.match[type].source);
    }

    var makeArray = function(array, results) {
        array = Array.prototype.slice.call(array, 0);

        if (results) {
            results.push.apply(results, array);
            return results;
        }

        return array;
    };

    try {
        Array.prototype.slice.call(document.documentElement.childNodes, 0);

    } catch (e) {
        makeArray = function(array, results) {
            var ret = results || [];

            if (toString.call(array) === "[object Array]") {
                Array.prototype.push.apply(ret, array);
            } else {
                if (typeof array.length === "number") {
                    for (var i = 0, l = array.length; i < l; i++) {
                        ret.push(array[i]);
                    }
                } else {
                    for (var i = 0; array[i]; i++) {
                        ret.push(array[i]);
                    }
                }
            }

            return ret;
        };
    }

    var sortOrder;

    if (document.documentElement.compareDocumentPosition) {
        sortOrder = function(a, b) {
            if (!a.compareDocumentPosition || !b.compareDocumentPosition) {
                if (a == b) {
                    hasDuplicate = true;
                }
                return 0;
            }

            var ret = a.compareDocumentPosition(b) & 4 ? -1 : a === b ? 0 : 1;
            if (ret === 0) {
                hasDuplicate = true;
            }
            return ret;
        };
    } else if ("sourceIndex" in document.documentElement) {
        sortOrder = function(a, b) {
            if (!a.sourceIndex || !b.sourceIndex) {
                if (a == b) {
                    hasDuplicate = true;
                }
                return 0;
            }

            var ret = a.sourceIndex - b.sourceIndex;
            if (ret === 0) {
                hasDuplicate = true;
            }
            return ret;
        };
    } else if (document.createRange) {
        sortOrder = function(a, b) {
            if (!a.ownerDocument || !b.ownerDocument) {
                if (a == b) {
                    hasDuplicate = true;
                }
                return 0;
            }

            var aRange = a.ownerDocument.createRange(),
                bRange = b.ownerDocument.createRange();
            aRange.setStart(a, 0);
            aRange.setEnd(a, 0);
            bRange.setStart(b, 0);
            bRange.setEnd(b, 0);
            var ret = aRange.compareBoundaryPoints(Range.START_TO_END, bRange);
            if (ret === 0) {
                hasDuplicate = true;
            }
            return ret;
        };
    }

    (function() {
        var form = document.createElement("div"),
            id = "script" + (new Date).getTime();
        form.innerHTML = "<a name='" + id + "'/>";

        var root = document.documentElement;
        root.insertBefore(form, root.firstChild);

        if ( !! document.getElementById(id)) {
            Expr.find.ID = function(match, context, isXML) {
                if (typeof context.getElementById !== "undefined" && !isXML) {
                    var m = context.getElementById(match[1]);
                    return m ? m.id === match[1] || typeof m.getAttributeNode !== "undefined" && m.getAttributeNode("id").nodeValue === match[1] ? [m] : undefined : [];
                }
            };

            Expr.filter.ID = function(elem, match) {
                var node = typeof elem.getAttributeNode !== "undefined" && elem.getAttributeNode("id");
                return elem.nodeType === 1 && node && node.nodeValue === match;
            };
        }

        root.removeChild(form);
        root = form = null; // release memory in IE
    })();

    (function() {

        var div = document.createElement("div");
        div.appendChild(document.createComment(""));

        if (div.getElementsByTagName("*").length > 0) {
            Expr.find.TAG = function(match, context) {
                var results = context.getElementsByTagName(match[1]);

                if (match[1] === "*") {
                    var tmp = [];

                    for (var i = 0; results[i]; i++) {
                        if (results[i].nodeType === 1) {
                            tmp.push(results[i]);
                        }
                    }

                    results = tmp;
                }

                return results;
            };
        }

        div.innerHTML = "<a href='#'></a>";
        if (div.firstChild && typeof div.firstChild.getAttribute !== "undefined" && div.firstChild.getAttribute("href") !== "#") {
            Expr.attrHandle.href = function(elem) {
                return elem.getAttribute("href", 2);
            };
        }

        div = null; // release memory in IE
    })();

    if (document.querySelectorAll)(function() {
        var oldSizzle = Sizzle,
            div = document.createElement("div");
        div.innerHTML = "<p class='TEST'></p>";

        if (div.querySelectorAll && div.querySelectorAll(".TEST").length === 0) {
            return;
        }

        Sizzle = function(query, context, extra, seed) {
            context = context || document;

            if (!seed && context.nodeType === 9 && !isXML(context)) {
                try {
                    return makeArray(context.querySelectorAll(query), extra);
                } catch (e) {}
            }

            return oldSizzle(query, context, extra, seed);
        };

        for (var prop in oldSizzle) {
            Sizzle[prop] = oldSizzle[prop];
        }

        div = null; // release memory in IE
    })();

    if (document.getElementsByClassName && document.documentElement.getElementsByClassName)(function() {
        var div = document.createElement("div");
        div.innerHTML = "<div class='test e'></div><div class='test'></div>";

        if (div.getElementsByClassName("e").length === 0) return;

        div.lastChild.className = "e";

        if (div.getElementsByClassName("e").length === 1) return;

        Expr.order.splice(1, 0, "CLASS");
        Expr.find.CLASS = function(match, context, isXML) {
            if (typeof context.getElementsByClassName !== "undefined" && !isXML) {
                return context.getElementsByClassName(match[1]);
            }
        };

        div = null; // release memory in IE
    })();

    function dirNodeCheck(dir, cur, doneName, checkSet, nodeCheck, isXML) {
        var sibDir = dir == "previousSibling" && !isXML;
        for (var i = 0, l = checkSet.length; i < l; i++) {
            var elem = checkSet[i];
            if (elem) {
                if (sibDir && elem.nodeType === 1) {
                    elem.sizcache = doneName;
                    elem.sizset = i;
                }
                elem = elem[dir];
                var match = false;

                while (elem) {
                    if (elem.sizcache === doneName) {
                        match = checkSet[elem.sizset];
                        break;
                    }

                    if (elem.nodeType === 1 && !isXML) {
                        elem.sizcache = doneName;
                        elem.sizset = i;
                    }

                    if (elem.nodeName === cur) {
                        match = elem;
                        break;
                    }

                    elem = elem[dir];
                }

                checkSet[i] = match;
            }
        }
    }

    function dirCheck(dir, cur, doneName, checkSet, nodeCheck, isXML) {
        var sibDir = dir == "previousSibling" && !isXML;
        for (var i = 0, l = checkSet.length; i < l; i++) {
            var elem = checkSet[i];
            if (elem) {
                if (sibDir && elem.nodeType === 1) {
                    elem.sizcache = doneName;
                    elem.sizset = i;
                }
                elem = elem[dir];
                var match = false;

                while (elem) {
                    if (elem.sizcache === doneName) {
                        match = checkSet[elem.sizset];
                        break;
                    }

                    if (elem.nodeType === 1) {
                        if (!isXML) {
                            elem.sizcache = doneName;
                            elem.sizset = i;
                        }
                        if (typeof cur !== "string") {
                            if (elem === cur) {
                                match = true;
                                break;
                            }

                        } else if (Sizzle.filter(cur, [elem]).length > 0) {
                            match = elem;
                            break;
                        }
                    }

                    elem = elem[dir];
                }

                checkSet[i] = match;
            }
        }
    }

    var contains = document.compareDocumentPosition ?
    function(a, b) {
        return a.compareDocumentPosition(b) & 16;
    } : function(a, b) {
        return a !== b && (a.contains ? a.contains(b) : true);
    };

    var isXML = function(elem) {
        return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" || !! elem.ownerDocument && elem.ownerDocument.documentElement.nodeName !== "HTML";
    };

    var posProcess = function(selector, context) {
        var tmpSet = [],
            later = "",
            match, root = context.nodeType ? [context] : context;

        while ((match = Expr.match.PSEUDO.exec(selector))) {
            later += match[0];
            selector = selector.replace(Expr.match.PSEUDO, "");
        }

        selector = Expr.relative[selector] ? selector + "*" : selector;

        for (var i = 0, l = root.length; i < l; i++) {
            Sizzle(selector, root[i], tmpSet);
        }

        return Sizzle.filter(later, tmpSet);
    };


    window.Sizzle = Sizzle;

})();

Prototype._original_property = window.Sizzle;

;
(function(engine) {
    var extendElements = Prototype.Selector.extendElements;

    function select(selector, scope) {
        return extendElements(engine(selector, scope || document));
    }

    function match(element, selector) {
        return engine.matches(selector, [element]).length == 1;
    }

    Prototype.Selector.engine = engine;
    Prototype.Selector.select = select;
    Prototype.Selector.match = match;
})(Sizzle);

window.Sizzle = Prototype._original_property;
delete Prototype._original_property;

var Form = {
    reset: function(form) {
        form = $(form);
        form.reset();
        return form;
    },

    serializeElements: function(elements, options) {
        if (typeof options != 'object') options = {
            hash: !! options
        };
        else if (Object.isUndefined(options.hash)) options.hash = true;
        var key, value, submitted = false,
            submit = options.submit,
            accumulator, initial;

        if (options.hash) {
            initial = {};
            accumulator = function(result, key, value) {
                if (key in result) {
                    if (!Object.isArray(result[key])) result[key] = [result[key]];
                    result[key].push(value);
                } else result[key] = value;
                return result;
            };
        } else {
            initial = '';
            accumulator = function(result, key, value) {
                return result + (result ? '&' : '') + encodeURIComponent(key) + '=' + encodeURIComponent(value);
            }
        }

        return elements.inject(initial, function(result, element) {
            if (!element.disabled && element.name) {
                key = element.name;
                value = $(element).getValue();
                if (value != null && element.type != 'file' && (element.type != 'submit' || (!submitted && submit !== false && (!submit || key == submit) && (submitted = true)))) {
                    result = accumulator(result, key, value);
                }
            }
            return result;
        });
    }
};

Form.Methods = {
    serialize: function(form, options) {
        return Form.serializeElements(Form.getElements(form), options);
    },

    getElements: function(form) {
        var elements = $(form).getElementsByTagName('*'),
            element, arr = [],
            serializers = Form.Element.Serializers;
        for (var i = 0; element = elements[i]; i++) {
            arr.push(element);
        }
        return arr.inject([], function(elements, child) {
            if (serializers[child.tagName.toLowerCase()]) elements.push(Element.extend(child));
            return elements;
        })
    },

    getInputs: function(form, typeName, name) {
        form = $(form);
        var inputs = form.getElementsByTagName('input');

        if (!typeName && !name) return $A(inputs).map(Element.extend);

        for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
            var input = inputs[i];
            if ((typeName && input.type != typeName) || (name && input.name != name)) continue;
            matchingInputs.push(Element.extend(input));
        }

        return matchingInputs;
    },

    disable: function(form) {
        form = $(form);
        Form.getElements(form).invoke('disable');
        return form;
    },

    enable: function(form) {
        form = $(form);
        Form.getElements(form).invoke('enable');
        return form;
    },

    findFirstElement: function(form) {
        var elements = $(form).getElements().findAll(function(element) {
            return 'hidden' != element.type && !element.disabled;
        });
        var firstByIndex = elements.findAll(function(element) {
            return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
        }).sortBy(function(element) {
            return element.tabIndex
        }).first();

        return firstByIndex ? firstByIndex : elements.find(function(element) {
            return /^(?:input|select|textarea)$/i.test(element.tagName);
        });
    },

    focusFirstElement: function(form) {
        form = $(form);
        var element = form.findFirstElement();
        if (element) element.activate();
        return form;
    },

    request: function(form, options) {
        form = $(form), options = Object.clone(options || {});

        var params = options.parameters,
            action = form.readAttribute('action') || '';
        if (action.blank()) action = window.location.href;
        options.parameters = form.serialize(true);

        if (params) {
            if (Object.isString(params)) params = params.toQueryParams();
            Object.extend(options.parameters, params);
        }

        if (form.hasAttribute('method') && !options.method) options.method = form.method;

        return new Ajax.Request(action, options);
    }
};

/*--------------------------------------------------------------------------*/


Form.Element = {
    focus: function(element) {
        $(element).focus();
        return element;
    },

    select: function(element) {
        $(element).select();
        return element;
    }
};

Form.Element.Methods = {

    serialize: function(element) {
        element = $(element);
        if (!element.disabled && element.name) {
            var value = element.getValue();
            if (value != undefined) {
                var pair = {};
                pair[element.name] = value;
                return Object.toQueryString(pair);
            }
        }
        return '';
    },

    getValue: function(element) {
        element = $(element);
        var method = element.tagName.toLowerCase();
        return Form.Element.Serializers[method](element);
    },

    setValue: function(element, value) {
        element = $(element);
        var method = element.tagName.toLowerCase();
        Form.Element.Serializers[method](element, value);
        return element;
    },

    clear: function(element) {
        $(element).value = '';
        return element;
    },

    present: function(element) {
        return $(element).value != '';
    },

    activate: function(element) {
        element = $(element);
        try {
            element.focus();
            if (element.select && (element.tagName.toLowerCase() != 'input' || !(/^(?:button|reset|submit)$/i.test(element.type)))) element.select();
        } catch (e) {}
        return element;
    },

    disable: function(element) {
        element = $(element);
        element.disabled = true;
        return element;
    },

    enable: function(element) {
        element = $(element);
        element.disabled = false;
        return element;
    }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;

var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = (function() {
    function input(element, value) {
        switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
            return inputSelector(element, value);
        default:
            return valueSelector(element, value);
        }
    }

    function inputSelector(element, value) {
        if (Object.isUndefined(value)) return element.checked ? element.value : null;
        else element.checked = !! value;
    }

    function valueSelector(element, value) {
        if (Object.isUndefined(value)) return element.value;
        else element.value = value;
    }

    function select(element, value) {
        if (Object.isUndefined(value)) return (element.type === 'select-one' ? selectOne : selectMany)(element);

        var opt, currentValue, single = !Object.isArray(value);
        for (var i = 0, length = element.length; i < length; i++) {
            opt = element.options[i];
            currentValue = this.optionValue(opt);
            if (single) {
                if (currentValue == value) {
                    opt.selected = true;
                    return;
                }
            } else opt.selected = value.include(currentValue);
        }
    }

    function selectOne(element) {
        var index = element.selectedIndex;
        return index >= 0 ? optionValue(element.options[index]) : null;
    }

    function selectMany(element) {
        var values, length = element.length;
        if (!length) return null;

        for (var i = 0, values = []; i < length; i++) {
            var opt = element.options[i];
            if (opt.selected) values.push(optionValue(opt));
        }
        return values;
    }

    function optionValue(opt) {
        return Element.hasAttribute(opt, 'value') ? opt.value : opt.text;
    }

    return {
        input: input,
        inputSelector: inputSelector,
        textarea: valueSelector,
        select: select,
        selectOne: selectOne,
        selectMany: selectMany,
        optionValue: optionValue,
        button: valueSelector
    };
})();

/*--------------------------------------------------------------------------*/


Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
    initialize: function($super, element, frequency, callback) {
        $super(callback, frequency);
        this.element = $(element);
        this.lastValue = this.getValue();
    },

    execute: function() {
        var value = this.getValue();
        if (Object.isString(this.lastValue) && Object.isString(value) ? this.lastValue != value : String(this.lastValue) != String(value)) {
            this.callback(this.element, value);
            this.lastValue = value;
        }
    }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
    getValue: function() {
        return Form.Element.getValue(this.element);
    }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
    getValue: function() {
        return Form.serialize(this.element);
    }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
    initialize: function(element, callback) {
        this.element = $(element);
        this.callback = callback;

        this.lastValue = this.getValue();
        if (this.element.tagName.toLowerCase() == 'form') this.registerFormCallbacks();
        else
        this.registerCallback(this.element);
    },

    onElementEvent: function() {
        var value = this.getValue();
        if (this.lastValue != value) {
            this.callback(this.element, value);
            this.lastValue = value;
        }
    },

    registerFormCallbacks: function() {
        Form.getElements(this.element).each(this.registerCallback, this);
    },

    registerCallback: function(element) {
        if (element.type) {
            switch (element.type.toLowerCase()) {
            case 'checkbox':
            case 'radio':
                Event.observe(element, 'click', this.onElementEvent.bind(this));
                break;
            default:
                Event.observe(element, 'change', this.onElementEvent.bind(this));
                break;
            }
        }
    }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
    getValue: function() {
        return Form.Element.getValue(this.element);
    }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
    getValue: function() {
        return Form.serialize(this.element);
    }
});
(function() {

    var Event = {
        KEY_BACKSPACE: 8,
        KEY_TAB: 9,
        KEY_RETURN: 13,
        KEY_ESC: 27,
        KEY_LEFT: 37,
        KEY_UP: 38,
        KEY_RIGHT: 39,
        KEY_DOWN: 40,
        KEY_DELETE: 46,
        KEY_HOME: 36,
        KEY_END: 35,
        KEY_PAGEUP: 33,
        KEY_PAGEDOWN: 34,
        KEY_INSERT: 45,

        cache: {}
    };

    var docEl = document.documentElement;
    var MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED = 'onmouseenter' in docEl && 'onmouseleave' in docEl;



    var isIELegacyEvent = function(event) {
        return false;
    };

    if (window.attachEvent) {
        if (window.addEventListener) {
            isIELegacyEvent = function(event) {
                return !(event instanceof window.Event);
            };
        } else {
            isIELegacyEvent = function(event) {
                return true;
            };
        }
    }

    var _isButton;

    function _isButtonForDOMEvents(event, code) {
        return event.which ? (event.which === code + 1) : (event.button === code);
    }

    var legacyButtonMap = {
        0: 1,
        1: 4,
        2: 2
    };

    function _isButtonForLegacyEvents(event, code) {
        return event.button === legacyButtonMap[code];
    }

    function _isButtonForWebKit(event, code) {
        switch (code) {
        case 0:
            return event.which == 1 && !event.metaKey;
        case 1:
            return event.which == 2 || (event.which == 1 && event.metaKey);
        case 2:
            return event.which == 3;
        default:
            return false;
        }
    }

    if (window.attachEvent) {
        if (!window.addEventListener) {
            _isButton = _isButtonForLegacyEvents;
        } else {
            _isButton = function(event, code) {
                return isIELegacyEvent(event) ? _isButtonForLegacyEvents(event, code) : _isButtonForDOMEvents(event, code);
            }
        }
    } else if (Prototype.Browser.WebKit) {
        _isButton = _isButtonForWebKit;
    } else {
        _isButton = _isButtonForDOMEvents;
    }

    function isLeftClick(event) {
        return _isButton(event, 0)
    }

    function isMiddleClick(event) {
        return _isButton(event, 1)
    }

    function isRightClick(event) {
        return _isButton(event, 2)
    }

    function element(event) {
        event = Event.extend(event);

        var node = event.target,
            type = event.type,
            currentTarget = event.currentTarget;

        if (currentTarget && currentTarget.tagName) {
            if (type === 'load' || type === 'error' || (type === 'click' && currentTarget.tagName.toLowerCase() === 'input' && currentTarget.type === 'radio')) node = currentTarget;
        }

        if (node.nodeType == Node.TEXT_NODE) node = node.parentNode;

        return Element.extend(node);
    }

    function findElement(event, expression) {
        var element = Event.element(event);

        if (!expression) return element;
        while (element) {
            if (Object.isElement(element) && Prototype.Selector.match(element, expression)) {
                return Element.extend(element);
            }
            element = element.parentNode;
        }
    }

    function pointer(event) {
        return {
            x: pointerX(event),
            y: pointerY(event)
        };
    }

    function pointerX(event) {
        var docElement = document.documentElement,
            body = document.body || {
                scrollLeft: 0
            };

        return event.pageX || (event.clientX + (docElement.scrollLeft || body.scrollLeft) - (docElement.clientLeft || 0));
    }

    function pointerY(event) {
        var docElement = document.documentElement,
            body = document.body || {
                scrollTop: 0
            };

        return event.pageY || (event.clientY + (docElement.scrollTop || body.scrollTop) - (docElement.clientTop || 0));
    }


    function stop(event) {
        Event.extend(event);
        event.preventDefault();
        event.stopPropagation();

        event.stopped = true;
    }


    Event.Methods = {
        isLeftClick: isLeftClick,
        isMiddleClick: isMiddleClick,
        isRightClick: isRightClick,

        element: element,
        findElement: findElement,

        pointer: pointer,
        pointerX: pointerX,
        pointerY: pointerY,

        stop: stop
    };

    var methods = Object.keys(Event.Methods).inject({}, function(m, name) {
        m[name] = Event.Methods[name].methodize();
        return m;
    });

    if (window.attachEvent) {
        function _relatedTarget(event) {
            var element;
            switch (event.type) {
            case 'mouseover':
            case 'mouseenter':
                element = event.fromElement;
                break;
            case 'mouseout':
            case 'mouseleave':
                element = event.toElement;
                break;
            default:
                return null;
            }
            return Element.extend(element);
        }

        var additionalMethods = {
            stopPropagation: function() {
                this.cancelBubble = true
            },
            preventDefault: function() {
                this.returnValue = false
            },
            inspect: function() {
                return '[object Event]'
            }
        };

        Event.extend = function(event, element) {
            if (!event) return false;

            if (!isIELegacyEvent(event)) return event;

            if (event._extendedByPrototype) return event;
            event._extendedByPrototype = Prototype.emptyFunction;

            var pointer = Event.pointer(event);

            Object.extend(event, {
                target: event.srcElement || element,
                relatedTarget: _relatedTarget(event),
                pageX: pointer.x,
                pageY: pointer.y
            });

            Object.extend(event, methods);
            Object.extend(event, additionalMethods);

            return event;
        };
    } else {
        Event.extend = Prototype.K;
    }

    if (window.addEventListener) {
        Event.prototype = window.Event.prototype || document.createEvent('HTMLEvents').__proto__;
        Object.extend(Event.prototype, methods);
    }

    function _createResponder(element, eventName, handler) {
        var registry = Element.retrieve(element, 'prototype_event_registry');

        if (Object.isUndefined(registry)) {
            CACHE.push(element);
            registry = Element.retrieve(element, 'prototype_event_registry', $H());
        }

        var respondersForEvent = registry.get(eventName);
        if (Object.isUndefined(respondersForEvent)) {
            respondersForEvent = [];
            registry.set(eventName, respondersForEvent);
        }

        if (respondersForEvent.pluck('handler').include(handler)) return false;

        var responder;
        if (eventName.include(":")) {
            responder = function(event) {
                if (Object.isUndefined(event.eventName)) return false;

                if (event.eventName !== eventName) return false;

                Event.extend(event, element);
                handler.call(element, event);
            };
        } else {
            if (!MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED && (eventName === "mouseenter" || eventName === "mouseleave")) {
                if (eventName === "mouseenter" || eventName === "mouseleave") {
                    responder = function(event) {
                        Event.extend(event, element);

                        var parent = event.relatedTarget;
                        while (parent && parent !== element) {
                            try {
                                parent = parent.parentNode;
                            } catch (e) {
                                parent = element;
                            }
                        }

                        if (parent === element) return;

                        handler.call(element, event);
                    };
                }
            } else {
                responder = function(event) {
                    Event.extend(event, element);
                    handler.call(element, event);
                };
            }
        }

        responder.handler = handler;
        respondersForEvent.push(responder);
        return responder;
    }

    function _destroyCache() {
        for (var i = 0, length = CACHE.length; i < length; i++) {
            Event.stopObserving(CACHE[i]);
            CACHE[i] = null;
        }
    }

    var CACHE = [];

    if (Prototype.Browser.IE) window.attachEvent('onunload', _destroyCache);

    if (Prototype.Browser.WebKit) window.addEventListener('unload', Prototype.emptyFunction, false);


    var _getDOMEventName = Prototype.K,
        translations = {
            mouseenter: "mouseover",
            mouseleave: "mouseout"
        };

    if (!MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED) {
        _getDOMEventName = function(eventName) {
            return (translations[eventName] || eventName);
        };
    }

    function observe(element, eventName, handler) {
        element = $(element);

        var responder = _createResponder(element, eventName, handler);

        if (!responder) return element;

        if (eventName.include(':')) {
            if (element.addEventListener) element.addEventListener("dataavailable", responder, false);
            else {
                element.attachEvent("ondataavailable", responder);
                element.attachEvent("onlosecapture", responder);
            }
        } else {
            var actualEventName = _getDOMEventName(eventName);

            if (element.addEventListener) element.addEventListener(actualEventName, responder, false);
            else
            element.attachEvent("on" + actualEventName, responder);
        }

        return element;
    }

    function stopObserving(element, eventName, handler) {
        element = $(element);

        var registry = Element.retrieve(element, 'prototype_event_registry');
        if (!registry) return element;

        if (!eventName) {
            registry.each(function(pair) {
                var eventName = pair.key;
                stopObserving(element, eventName);
            });
            return element;
        }

        var responders = registry.get(eventName);
        if (!responders) return element;

        if (!handler) {
            responders.each(function(r) {
                stopObserving(element, eventName, r.handler);
            });
            return element;
        }

        var i = responders.length,
            responder;
        while (i--) {
            if (responders[i].handler === handler) {
                responder = responders[i];
                break;
            }
        }
        if (!responder) return element;

        if (eventName.include(':')) {
            if (element.removeEventListener) element.removeEventListener("dataavailable", responder, false);
            else {
                element.detachEvent("ondataavailable", responder);
                element.detachEvent("onlosecapture", responder);
            }
        } else {
            var actualEventName = _getDOMEventName(eventName);
            if (element.removeEventListener) element.removeEventListener(actualEventName, responder, false);
            else
            element.detachEvent('on' + actualEventName, responder);
        }

        registry.set(eventName, responders.without(responder));

        return element;
    }

    function fire(element, eventName, memo, bubble) {
        element = $(element);

        if (Object.isUndefined(bubble)) bubble = true;

        if (element == document && document.createEvent && !element.dispatchEvent) element = document.documentElement;

        var event;
        if (document.createEvent) {
            event = document.createEvent('HTMLEvents');
            event.initEvent('dataavailable', bubble, true);
        } else {
            event = document.createEventObject();
            event.eventType = bubble ? 'ondataavailable' : 'onlosecapture';
        }

        event.eventName = eventName;
        event.memo = memo || {};

        if (document.createEvent) element.dispatchEvent(event);
        else
        element.fireEvent(event.eventType, event);

        return Event.extend(event);
    }

    Event.Handler = Class.create({
        initialize: function(element, eventName, selector, callback) {
            this.element = $(element);
            this.eventName = eventName;
            this.selector = selector;
            this.callback = callback;
            this.handler = this.handleEvent.bind(this);
        },

        start: function() {
            Event.observe(this.element, this.eventName, this.handler);
            return this;
        },

        stop: function() {
            Event.stopObserving(this.element, this.eventName, this.handler);
            return this;
        },

        handleEvent: function(event) {
            var element = Event.findElement(event, this.selector);
            if (element) this.callback.call(this.element, event, element);
        }
    });

    function on(element, eventName, selector, callback) {
        element = $(element);
        if (Object.isFunction(selector) && Object.isUndefined(callback)) {
            callback = selector, selector = null;
        }

        return new Event.Handler(element, eventName, selector, callback).start();
    }

    Object.extend(Event, Event.Methods);

    Object.extend(Event, {
        fire: fire,
        observe: observe,
        stopObserving: stopObserving,
        on: on
    });

    Element.addMethods({
        fire: fire,

        observe: observe,

        stopObserving: stopObserving,

        on: on
    });

    Object.extend(document, {
        fire: fire.methodize(),

        observe: observe.methodize(),

        stopObserving: stopObserving.methodize(),

        on: on.methodize(),

        loaded: false
    });

    if (window.Event) Object.extend(window.Event, Event);
    else window.Event = Event;
})();

(function() {
/* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards, John Resig, and Diego Perini. */

    var timer;

    function fireContentLoadedEvent() {
        if (document.loaded) return;
        if (timer) window.clearTimeout(timer);
        document.loaded = true;
        document.fire('dom:loaded');
    }

    function checkReadyState() {
        if (document.readyState === 'complete') {
            document.stopObserving('readystatechange', checkReadyState);
            fireContentLoadedEvent();
        }
    }

    function pollDoScroll() {
        try {
            document.documentElement.doScroll('left');
        } catch (e) {
            timer = pollDoScroll.defer();
            return;
        }
        fireContentLoadedEvent();
    }

    if (document.addEventListener) {
        document.addEventListener('DOMContentLoaded', fireContentLoadedEvent, false);
    } else {
        document.observe('readystatechange', checkReadyState);
        if (window == top) timer = pollDoScroll.defer();
    }

    Event.observe(window, 'load', fireContentLoadedEvent);
})();


Element.addMethods(); /*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = {
    display: Element.toggle
};

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
    Before: function(element, content) {
        return Element.insert(element, {
            before: content
        });
    },

    Top: function(element, content) {
        return Element.insert(element, {
            top: content
        });
    },

    Bottom: function(element, content) {
        return Element.insert(element, {
            bottom: content
        });
    },

    After: function(element, content) {
        return Element.insert(element, {
            after: content
        });
    }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

var Position = {
    includeScrollOffsets: false,

    prepare: function() {
        this.deltaX = window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft || 0;
        this.deltaY = window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop || 0;
    },

    within: function(element, x, y) {
        if (this.includeScrollOffsets) return this.withinIncludingScrolloffsets(element, x, y);
        this.xcomp = x;
        this.ycomp = y;
        this.offset = Element.cumulativeOffset(element);

        return (y >= this.offset[1] && y < this.offset[1] + element.offsetHeight && x >= this.offset[0] && x < this.offset[0] + element.offsetWidth);
    },

    withinIncludingScrolloffsets: function(element, x, y) {
        var offsetcache = Element.cumulativeScrollOffset(element);

        this.xcomp = x + offsetcache[0] - this.deltaX;
        this.ycomp = y + offsetcache[1] - this.deltaY;
        this.offset = Element.cumulativeOffset(element);

        return (this.ycomp >= this.offset[1] && this.ycomp < this.offset[1] + element.offsetHeight && this.xcomp >= this.offset[0] && this.xcomp < this.offset[0] + element.offsetWidth);
    },

    overlap: function(mode, element) {
        if (!mode) return 0;
        if (mode == 'vertical') return ((this.offset[1] + element.offsetHeight) - this.ycomp) / element.offsetHeight;
        if (mode == 'horizontal') return ((this.offset[0] + element.offsetWidth) - this.xcomp) / element.offsetWidth;
    },


    cumulativeOffset: Element.Methods.cumulativeOffset,

    positionedOffset: Element.Methods.positionedOffset,

    absolutize: function(element) {
        Position.prepare();
        return Element.absolutize(element);
    },

    relativize: function(element) {
        Position.prepare();
        return Element.relativize(element);
    },

    realOffset: Element.Methods.cumulativeScrollOffset,

    offsetParent: Element.Methods.getOffsetParent,

    page: Element.Methods.viewportOffset,

    clone: function(source, target, options) {
        options = options || {};
        return Element.clonePosition(target, source, options);
    }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods) {
    function iter(name) {
        return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
    }

    instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
    function(element, className) {
        className = className.toString().strip();
        var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
        return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
    } : function(element, className) {
        className = className.toString().strip();
        var elements = [],
            classNames = (/\s/.test(className) ? $w(className) : null);
        if (!classNames && !className) return elements;

        var nodes = $(element).getElementsByTagName('*');
        className = ' ' + className + ' ';

        for (var i = 0, child, cn; child = nodes[i]; i++) {
            if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) || (classNames && classNames.all(function(name) {
                return !name.toString().blank() && cn.include(' ' + name + ' ');
            })))) elements.push(Element.extend(child));
        }
        return elements;
    };

    return function(className, parentElement) {
        return $(parentElement || document.body).getElementsByClassName(className);
    };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
    initialize: function(element) {
        this.element = $(element);
    },

    _each: function(iterator) {
        this.element.className.split(/\s+/).select(function(name) {
            return name.length > 0;
        })._each(iterator);
    },

    set: function(className) {
        this.element.className = className;
    },

    add: function(classNameToAdd) {
        if (this.include(classNameToAdd)) return;
        this.set($A(this).concat(classNameToAdd).join(' '));
    },

    remove: function(classNameToRemove) {
        if (!this.include(classNameToRemove)) return;
        this.set($A(this).without(classNameToRemove).join(' '));
    },

    toString: function() {
        return $A(this).join(' ');
    }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

(function() {
    window.Selector = Class.create({
        initialize: function(expression) {
            this.expression = expression.strip();
        },

        findElements: function(rootElement) {
            return Prototype.Selector.select(this.expression, rootElement);
        },

        match: function(element) {
            return Prototype.Selector.match(element, this.expression);
        },

        toString: function() {
            return this.expression;
        },

        inspect: function() {
            return "#<Selector: " + this.expression + ">";
        }
    });

    Object.extend(Selector, {
        matchElements: function(elements, expression) {
            var match = Prototype.Selector.match,
                results = [];

            for (var i = 0, length = elements.length; i < length; i++) {
                var element = elements[i];
                if (match(element, expression)) {
                    results.push(Element.extend(element));
                }
            }
            return results;
        },

        findElement: function(elements, expression, index) {
            index = index || 0;
            var matchIndex = 0,
                element;
            for (var i = 0, length = elements.length; i < length; i++) {
                element = elements[i];
                if (Prototype.Selector.match(element, expression) && index === matchIndex++) {
                    return Element.extend(element);
                }
            }
        },

        findChildElements: function(element, expressions) {
            var selector = expressions.toArray().join(', ');
            return Prototype.Selector.select(selector, element || document);
        }
    });
})();
// script.aculo.us scriptaculous.js v1.9.0, Thu Dec 23 16:54:48 -0500 2010
// Copyright (c) 2005-2010 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// For details, see the script.aculo.us web site: http://script.aculo.us/
var Scriptaculous = {
    Version: '1.9.0',
    require: function(libraryName) {
        try {
            // inserting via DOM fails in Safari 2.0, so brute force approach
            document.write('<script type="text/javascript" src="' + libraryName + '"><\/script>');
        } catch (e) {
            // for xhtml+xml served content, fall back to DOM methods
            var script = document.createElement('script');
            script.type = 'text/javascript';
            script.src = libraryName;
            document.getElementsByTagName('head')[0].appendChild(script);
        }
    },
    REQUIRED_PROTOTYPE: '1.6.0.3',
    load: function() {
        function convertVersionString(versionString) {
            var v = versionString.replace(/_.*|\./g, '');
            v = parseInt(v + '0'.times(4 - v.length));
            return versionString.indexOf('_') > -1 ? v - 1 : v;
        }

        if ((typeof Prototype == 'undefined') || (typeof Element == 'undefined') || (typeof Element.Methods == 'undefined') || (convertVersionString(Prototype.Version) < convertVersionString(Scriptaculous.REQUIRED_PROTOTYPE))) throw ("script.aculo.us requires the Prototype JavaScript framework >= " + Scriptaculous.REQUIRED_PROTOTYPE);

        var js = /scriptaculous\.js(\?.*)?$/;
        $$('script[src]').findAll(function(s) {
            return s.src.match(js);
        }).each(function(s) {
            var path = s.src.replace(js, ''),
                includes = s.src.match(/\?.*load=([a-z,]*)/);
            (includes ? includes[1] : 'builder,effects,dragdrop,controls,slider,sound').split(',').each(

            function(include) {
                Scriptaculous.require(path + include + '.js')
            });
        });
    }
};

Scriptaculous.load(); // script.aculo.us effects.js v1.9.0, Thu Dec 23 16:54:48 -0500 2010
// Copyright (c) 2005-2010 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// Contributors:
//  Justin Palmer (http://encytemedia.com/)
//  Mark Pilgrim (http://diveintomark.org/)
//  Martin Bialasinki
//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/
// converts rgb() and #xxx to #xxxxxx format,
// returns self (or first argument) if not convertable
String.prototype.parseColor = function() {
    var color = '#';
    if (this.slice(0, 4) == 'rgb(') {
        var cols = this.slice(4, this.length - 1).split(',');
        var i = 0;
        do {
            color += parseInt(cols[i]).toColorPart()
        } while (++i < 3);
    } else {
        if (this.slice(0, 1) == '#') {
            if (this.length == 4) for (var i = 1; i < 4; i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();
            if (this.length == 7) color = this.toLowerCase();
        }
    }
    return (color.length == 7 ? color : (arguments[0] || this));
};

/*--------------------------------------------------------------------------*/

Element.collectTextNodes = function(element) {
    return $A($(element).childNodes).collect(function(node) {
        return (node.nodeType == 3 ? node.nodeValue : (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
    }).flatten().join('');
};

Element.collectTextNodesIgnoreClass = function(element, className) {
    return $A($(element).childNodes).collect(function(node) {
        return (node.nodeType == 3 ? node.nodeValue : ((node.hasChildNodes() && !Element.hasClassName(node, className)) ? Element.collectTextNodesIgnoreClass(node, className) : ''));
    }).flatten().join('');
};

Element.setContentZoom = function(element, percent) {
    element = $(element);
    element.setStyle({
        fontSize: (percent / 100) + 'em'
    });
    if (Prototype.Browser.WebKit) window.scrollBy(0, 0);
    return element;
};

Element.getInlineOpacity = function(element) {
    return $(element).style.opacity || '';
};

Element.forceRerendering = function(element) {
    try {
        element = $(element);
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
    } catch (e) {}
};

/*--------------------------------------------------------------------------*/

var Effect = {
    _elementDoesNotExistError: {
        name: 'ElementDoesNotExistError',
        message: 'The specified DOM element does not exist, but is required for this effect to operate'
    },
    Transitions: {
        linear: Prototype.K,
        sinoidal: function(pos) {
            return (-Math.cos(pos * Math.PI) / 2) + .5;
        },
        reverse: function(pos) {
            return 1 - pos;
        },
        flicker: function(pos) {
            var pos = ((-Math.cos(pos * Math.PI) / 4) + .75) + Math.random() / 4;
            return pos > 1 ? 1 : pos;
        },
        wobble: function(pos) {
            return (-Math.cos(pos * Math.PI * (9 * pos)) / 2) + .5;
        },
        pulse: function(pos, pulses) {
            return (-Math.cos((pos * ((pulses || 5) - .5) * 2) * Math.PI) / 2) + .5;
        },
        spring: function(pos) {
            return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6));
        },
        none: function(pos) {
            return 0;
        },
        full: function(pos) {
            return 1;
        }
    },
    DefaultOptions: {
        duration: 1.0,
        // seconds
        fps: 100,
        // 100= assume 66fps max.
        sync: false,
        // true for combining
        from: 0.0,
        to: 1.0,
        delay: 0.0,
        queue: 'parallel'
    },
    tagifyText: function(element) {
        var tagifyStyle = 'position:relative';
        if (Prototype.Browser.IE) tagifyStyle += ';zoom:1';

        element = $(element);
        $A(element.childNodes).each(function(child) {
            if (child.nodeType == 3) {
                child.nodeValue.toArray().each(function(character) {
                    element.insertBefore(
                    new Element('span', {
                        style: tagifyStyle
                    }).update(
                    character == ' ' ? String.fromCharCode(160) : character), child);
                });
                Element.remove(child);
            }
        });
    },
    multiple: function(element, effect) {
        var elements;
        if (((typeof element == 'object') || Object.isFunction(element)) && (element.length)) elements = element;
        else
        elements = $(element).childNodes;

        var options = Object.extend({
            speed: 0.1,
            delay: 0.0
        }, arguments[2] || {});
        var masterDelay = options.delay;

        $A(elements).each(function(element, index) {
            new effect(element, Object.extend(options, {
                delay: index * options.speed + masterDelay
            }));
        });
    },
    PAIRS: {
        'slide': ['SlideDown', 'SlideUp'],
        'blind': ['BlindDown', 'BlindUp'],
        'appear': ['Appear', 'Fade']
    },
    toggle: function(element, effect, options) {
        element = $(element);
        effect = (effect || 'appear').toLowerCase();

        return Effect[Effect.PAIRS[effect][element.visible() ? 1 : 0]](element, Object.extend({
            queue: {
                position: 'end',
                scope: (element.id || 'global'),
                limit: 1
            }
        }, options || {}));
    }
};

Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;

/* ------------- core effects ------------- */

Effect.ScopedQueue = Class.create(Enumerable, {
    initialize: function() {
        this.effects = [];
        this.interval = null;
    },
    _each: function(iterator) {
        this.effects._each(iterator);
    },
    add: function(effect) {
        var timestamp = new Date().getTime();

        var position = Object.isString(effect.options.queue) ? effect.options.queue : effect.options.queue.position;

        switch (position) {
        case 'front':
            // move unstarted effects after this effect
            this.effects.findAll(function(e) {
                return e.state == 'idle'
            }).each(function(e) {
                e.startOn += effect.finishOn;
                e.finishOn += effect.finishOn;
            });
            break;
        case 'with-last':
            timestamp = this.effects.pluck('startOn').max() || timestamp;
            break;
        case 'end':
            // start effect after last queued effect has finished
            timestamp = this.effects.pluck('finishOn').max() || timestamp;
            break;
        }

        effect.startOn += timestamp;
        effect.finishOn += timestamp;

        if (!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit)) this.effects.push(effect);

        if (!this.interval) this.interval = setInterval(this.loop.bind(this), 15);
    },
    remove: function(effect) {
        this.effects = this.effects.reject(function(e) {
            return e == effect
        });
        if (this.effects.length == 0) {
            clearInterval(this.interval);
            this.interval = null;
        }
    },
    loop: function() {
        var timePos = new Date().getTime();
        for (var i = 0, len = this.effects.length; i < len; i++)
        this.effects[i] && this.effects[i].loop(timePos);
    }
});

Effect.Queues = {
    instances: $H(),
    get: function(queueName) {
        if (!Object.isString(queueName)) return queueName;

        return this.instances.get(queueName) || this.instances.set(queueName, new Effect.ScopedQueue());
    }
};
Effect.Queue = Effect.Queues.get('global');

Effect.Base = Class.create({
    position: null,
    start: function(options) {
        if (options && options.transition === false) options.transition = Effect.Transitions.linear;
        this.options = Object.extend(Object.extend({}, Effect.DefaultOptions), options || {});
        this.currentFrame = 0;
        this.state = 'idle';
        this.startOn = this.options.delay * 1000;
        this.finishOn = this.startOn + (this.options.duration * 1000);
        this.fromToDelta = this.options.to - this.options.from;
        this.totalTime = this.finishOn - this.startOn;
        this.totalFrames = this.options.fps * this.options.duration;

        this.render = (function() {
            function dispatch(effect, eventName) {
                if (effect.options[eventName + 'Internal']) effect.options[eventName + 'Internal'](effect);
                if (effect.options[eventName]) effect.options[eventName](effect);
            }

            return function(pos) {
                if (this.state === "idle") {
                    this.state = "running";
                    dispatch(this, 'beforeSetup');
                    if (this.setup) this.setup();
                    dispatch(this, 'afterSetup');
                }
                if (this.state === "running") {
                    pos = (this.options.transition(pos) * this.fromToDelta) + this.options.from;
                    this.position = pos;
                    dispatch(this, 'beforeUpdate');
                    if (this.update) this.update(pos);
                    dispatch(this, 'afterUpdate');
                }
            };
        })();

        this.event('beforeStart');
        if (!this.options.sync) Effect.Queues.get(Object.isString(this.options.queue) ? 'global' : this.options.queue.scope).add(this);
    },
    loop: function(timePos) {
        if (timePos >= this.startOn) {
            if (timePos >= this.finishOn) {
                this.render(1.0);
                this.cancel();
                this.event('beforeFinish');
                if (this.finish) this.finish();
                this.event('afterFinish');
                return;
            }
            var pos = (timePos - this.startOn) / this.totalTime,
                frame = (pos * this.totalFrames).round();
            if (frame > this.currentFrame) {
                this.render(pos);
                this.currentFrame = frame;
            }
        }
    },
    cancel: function() {
        if (!this.options.sync) Effect.Queues.get(Object.isString(this.options.queue) ? 'global' : this.options.queue.scope).remove(this);
        this.state = 'finished';
    },
    event: function(eventName) {
        if (this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
        if (this.options[eventName]) this.options[eventName](this);
    },
    inspect: function() {
        var data = $H();
        for (property in this)
        if (!Object.isFunction(this[property])) data.set(property, this[property]);
        return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
    }
});

Effect.Parallel = Class.create(Effect.Base, {
    initialize: function(effects) {
        this.effects = effects || [];
        this.start(arguments[1]);
    },
    update: function(position) {
        this.effects.invoke('render', position);
    },
    finish: function(position) {
        this.effects.each(function(effect) {
            effect.render(1.0);
            effect.cancel();
            effect.event('beforeFinish');
            if (effect.finish) effect.finish(position);
            effect.event('afterFinish');
        });
    }
});

Effect.Tween = Class.create(Effect.Base, {
    initialize: function(object, from, to) {
        object = Object.isString(object) ? $(object) : object;
        var args = $A(arguments),
            method = args.last(),
            options = args.length == 5 ? args[3] : null;
        this.method = Object.isFunction(method) ? method.bind(object) : Object.isFunction(object[method]) ? object[method].bind(object) : function(value) {
            object[method] = value
        };
        this.start(Object.extend({
            from: from,
            to: to
        }, options || {}));
    },
    update: function(position) {
        this.method(position);
    }
});

Effect.Event = Class.create(Effect.Base, {
    initialize: function() {
        this.start(Object.extend({
            duration: 0
        }, arguments[0] || {}));
    },
    update: Prototype.emptyFunction
});

Effect.Opacity = Class.create(Effect.Base, {
    initialize: function(element) {
        this.element = $(element);
        if (!this.element) throw (Effect._elementDoesNotExistError);
        // make this work on IE on elements without 'layout'
        if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout)) this.element.setStyle({
            zoom: 1
        });
        var options = Object.extend({
            from: this.element.getOpacity() || 0.0,
            to: 1.0
        }, arguments[1] || {});
        this.start(options);
    },
    update: function(position) {
        this.element.setOpacity(position);
    }
});

Effect.Move = Class.create(Effect.Base, {
    initialize: function(element) {
        this.element = $(element);
        if (!this.element) throw (Effect._elementDoesNotExistError);
        var options = Object.extend({
            x: 0,
            y: 0,
            mode: 'relative'
        }, arguments[1] || {});
        this.start(options);
    },
    setup: function() {
        this.element.makePositioned();
        this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
        this.originalTop = parseFloat(this.element.getStyle('top') || '0');
        if (this.options.mode == 'absolute') {
            this.options.x = this.options.x - this.originalLeft;
            this.options.y = this.options.y - this.originalTop;
        }
    },
    update: function(position) {
        this.element.setStyle({
            left: (this.options.x * position + this.originalLeft).round() + 'px',
            top: (this.options.y * position + this.originalTop).round() + 'px'
        });
    }
});

// for backwards compatibility
Effect.MoveBy = function(element, toTop, toLeft) {
    return new Effect.Move(element, Object.extend({
        x: toLeft,
        y: toTop
    }, arguments[3] || {}));
};

Effect.Scale = Class.create(Effect.Base, {
    initialize: function(element, percent) {
        this.element = $(element);
        if (!this.element) throw (Effect._elementDoesNotExistError);
        var options = Object.extend({
            scaleX: true,
            scaleY: true,
            scaleContent: true,
            scaleFromCenter: false,
            scaleMode: 'box',
            // 'box' or 'contents' or { } with provided values
            scaleFrom: 100.0,
            scaleTo: percent
        }, arguments[2] || {});
        this.start(options);
    },
    setup: function() {
        this.restoreAfterFinish = this.options.restoreAfterFinish || false;
        this.elementPositioning = this.element.getStyle('position');

        this.originalStyle = {};
        ['top', 'left', 'width', 'height', 'fontSize'].each(function(k) {
            this.originalStyle[k] = this.element.style[k];
        }.bind(this));

        this.originalTop = this.element.offsetTop;
        this.originalLeft = this.element.offsetLeft;

        var fontSize = this.element.getStyle('font-size') || '100%';
        ['em', 'px', '%', 'pt'].each(function(fontSizeType) {
            if (fontSize.indexOf(fontSizeType) > 0) {
                this.fontSize = parseFloat(fontSize);
                this.fontSizeType = fontSizeType;
            }
        }.bind(this));

        this.factor = (this.options.scaleTo - this.options.scaleFrom) / 100;

        this.dims = null;
        if (this.options.scaleMode == 'box') this.dims = [this.element.offsetHeight, this.element.offsetWidth];
        if (/^content/.test(this.options.scaleMode)) this.dims = [this.element.scrollHeight, this.element.scrollWidth];
        if (!this.dims) this.dims = [this.options.scaleMode.originalHeight, this.options.scaleMode.originalWidth];
    },
    update: function(position) {
        var currentScale = (this.options.scaleFrom / 100.0) + (this.factor * position);
        if (this.options.scaleContent && this.fontSize) this.element.setStyle({
            fontSize: this.fontSize * currentScale + this.fontSizeType
        });
        this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
    },
    finish: function(position) {
        if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
    },
    setDimensions: function(height, width) {
        var d = {};
        if (this.options.scaleX) d.width = width.round() + 'px';
        if (this.options.scaleY) d.height = height.round() + 'px';
        if (this.options.scaleFromCenter) {
            var topd = (height - this.dims[0]) / 2;
            var leftd = (width - this.dims[1]) / 2;
            if (this.elementPositioning == 'absolute') {
                if (this.options.scaleY) d.top = this.originalTop - topd + 'px';
                if (this.options.scaleX) d.left = this.originalLeft - leftd + 'px';
            } else {
                if (this.options.scaleY) d.top = -topd + 'px';
                if (this.options.scaleX) d.left = -leftd + 'px';
            }
        }
        this.element.setStyle(d);
    }
});

Effect.Highlight = Class.create(Effect.Base, {
    initialize: function(element) {
        this.element = $(element);
        if (!this.element) throw (Effect._elementDoesNotExistError);
        var options = Object.extend({
            startcolor: '#ffff99'
        }, arguments[1] || {});
        this.start(options);
    },
    setup: function() {
        // Prevent executing on elements not in the layout flow
        if (this.element.getStyle('display') == 'none') {
            this.cancel();
            return;
        }
        // Disable background image during the effect
        this.oldStyle = {};
        if (!this.options.keepBackgroundImage) {
            this.oldStyle.backgroundImage = this.element.getStyle('background-image');
            this.element.setStyle({
                backgroundImage: 'none'
            });
        }
        if (!this.options.endcolor) this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
        if (!this.options.restorecolor) this.options.restorecolor = this.element.getStyle('background-color');
        // init color calculations
        this._base = $R(0, 2).map(function(i) {
            return parseInt(this.options.startcolor.slice(i * 2 + 1, i * 2 + 3), 16)
        }.bind(this));
        this._delta = $R(0, 2).map(function(i) {
            return parseInt(this.options.endcolor.slice(i * 2 + 1, i * 2 + 3), 16) - this._base[i]
        }.bind(this));
    },
    update: function(position) {
        this.element.setStyle({
            backgroundColor: $R(0, 2).inject('#', function(m, v, i) {
                return m + ((this._base[i] + (this._delta[i] * position)).round().toColorPart());
            }.bind(this))
        });
    },
    finish: function() {
        this.element.setStyle(Object.extend(this.oldStyle, {
            backgroundColor: this.options.restorecolor
        }));
    }
});

Effect.ScrollTo = function(element) {
    var options = arguments[1] || {},
        scrollOffsets = document.viewport.getScrollOffsets(),
        elementOffsets = $(element).cumulativeOffset();

    if (options.offset) elementOffsets[1] += options.offset;

    return new Effect.Tween(null, scrollOffsets.top, elementOffsets[1], options, function(p) {
        scrollTo(scrollOffsets.left, p.round());
    });
};

/* ------------- combination effects ------------- */

Effect.Fade = function(element) {
    element = $(element);
    var oldOpacity = element.getInlineOpacity();
    var options = Object.extend({
        from: element.getOpacity() || 1.0,
        to: 0.0,
        afterFinishInternal: function(effect) {
            if (effect.options.to != 0) return;
            effect.element.hide().setStyle({
                opacity: oldOpacity
            });
        }
    }, arguments[1] || {});
    return new Effect.Opacity(element, options);
};

Effect.Appear = function(element) {
    element = $(element);
    var options = Object.extend({
        from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
        to: 1.0,
        // force Safari to render floated elements properly
        afterFinishInternal: function(effect) {
            effect.element.forceRerendering();
        },
        beforeSetup: function(effect) {
            effect.element.setOpacity(effect.options.from).show();
        }
    }, arguments[1] || {});
    return new Effect.Opacity(element, options);
};

Effect.Puff = function(element) {
    element = $(element);
    var oldStyle = {
        opacity: element.getInlineOpacity(),
        position: element.getStyle('position'),
        top: element.style.top,
        left: element.style.left,
        width: element.style.width,
        height: element.style.height
    };
    return new Effect.Parallel([new Effect.Scale(element, 200, {
        sync: true,
        scaleFromCenter: true,
        scaleContent: true,
        restoreAfterFinish: true
    }), new Effect.Opacity(element, {
        sync: true,
        to: 0.0
    })], Object.extend({
        duration: 1.0,
        beforeSetupInternal: function(effect) {
            Position.absolutize(effect.effects[0].element);
        },
        afterFinishInternal: function(effect) {
            effect.effects[0].element.hide().setStyle(oldStyle);
        }
    }, arguments[1] || {}));
};

Effect.BlindUp = function(element) {
    element = $(element);
    element.makeClipping();
    return new Effect.Scale(element, 0, Object.extend({
        scaleContent: false,
        scaleX: false,
        restoreAfterFinish: true,
        afterFinishInternal: function(effect) {
            effect.element.hide().undoClipping();
        }
    }, arguments[1] || {}));
};

Effect.BlindDown = function(element) {
    element = $(element);
    var elementDimensions = element.getDimensions();
    return new Effect.Scale(element, 100, Object.extend({
        scaleContent: false,
        scaleX: false,
        scaleFrom: 0,
        scaleMode: {
            originalHeight: elementDimensions.height,
            originalWidth: elementDimensions.width
        },
        restoreAfterFinish: true,
        afterSetup: function(effect) {
            effect.element.makeClipping().setStyle({
                height: '0px'
            }).show();
        },
        afterFinishInternal: function(effect) {
            effect.element.undoClipping();
        }
    }, arguments[1] || {}));
};

Effect.SwitchOff = function(element) {
    element = $(element);
    var oldOpacity = element.getInlineOpacity();
    return new Effect.Appear(element, Object.extend({
        duration: 0.4,
        from: 0,
        transition: Effect.Transitions.flicker,
        afterFinishInternal: function(effect) {
            new Effect.Scale(effect.element, 1, {
                duration: 0.3,
                scaleFromCenter: true,
                scaleX: false,
                scaleContent: false,
                restoreAfterFinish: true,
                beforeSetup: function(effect) {
                    effect.element.makePositioned().makeClipping();
                },
                afterFinishInternal: function(effect) {
                    effect.element.hide().undoClipping().undoPositioned().setStyle({
                        opacity: oldOpacity
                    });
                }
            });
        }
    }, arguments[1] || {}));
};

Effect.DropOut = function(element) {
    element = $(element);
    var oldStyle = {
        top: element.getStyle('top'),
        left: element.getStyle('left'),
        opacity: element.getInlineOpacity()
    };
    return new Effect.Parallel([new Effect.Move(element, {
        x: 0,
        y: 100,
        sync: true
    }), new Effect.Opacity(element, {
        sync: true,
        to: 0.0
    })], Object.extend({
        duration: 0.5,
        beforeSetup: function(effect) {
            effect.effects[0].element.makePositioned();
        },
        afterFinishInternal: function(effect) {
            effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
        }
    }, arguments[1] || {}));
};

Effect.Shake = function(element) {
    element = $(element);
    var options = Object.extend({
        distance: 20,
        duration: 0.5
    }, arguments[1] || {});
    var distance = parseFloat(options.distance);
    var split = parseFloat(options.duration) / 10.0;
    var oldStyle = {
        top: element.getStyle('top'),
        left: element.getStyle('left')
    };
    return new Effect.Move(element, {
        x: distance,
        y: 0,
        duration: split,
        afterFinishInternal: function(effect) {
            new Effect.Move(effect.element, {
                x: -distance * 2,
                y: 0,
                duration: split * 2,
                afterFinishInternal: function(effect) {
                    new Effect.Move(effect.element, {
                        x: distance * 2,
                        y: 0,
                        duration: split * 2,
                        afterFinishInternal: function(effect) {
                            new Effect.Move(effect.element, {
                                x: -distance * 2,
                                y: 0,
                                duration: split * 2,
                                afterFinishInternal: function(effect) {
                                    new Effect.Move(effect.element, {
                                        x: distance * 2,
                                        y: 0,
                                        duration: split * 2,
                                        afterFinishInternal: function(effect) {
                                            new Effect.Move(effect.element, {
                                                x: -distance,
                                                y: 0,
                                                duration: split,
                                                afterFinishInternal: function(effect) {
                                                    effect.element.undoPositioned().setStyle(oldStyle);
                                                }
                                            });
                                        }
                                    });
                                }
                            });
                        }
                    });
                }
            });
        }
    });
};

Effect.SlideDown = function(element) {
    element = $(element).cleanWhitespace();
    // SlideDown need to have the content of the element wrapped in a container element with fixed height!
    var oldInnerBottom = element.down().getStyle('bottom');
    var elementDimensions = element.getDimensions();
    return new Effect.Scale(element, 100, Object.extend({
        scaleContent: false,
        scaleX: false,
        scaleFrom: window.opera ? 0 : 1,
        scaleMode: {
            originalHeight: elementDimensions.height,
            originalWidth: elementDimensions.width
        },
        restoreAfterFinish: true,
        afterSetup: function(effect) {
            effect.element.makePositioned();
            effect.element.down().makePositioned();
            if (window.opera) effect.element.setStyle({
                top: ''
            });
            effect.element.makeClipping().setStyle({
                height: '0px'
            }).show();
        },
        afterUpdateInternal: function(effect) {
            effect.element.down().setStyle({
                bottom: (effect.dims[0] - effect.element.clientHeight) + 'px'
            });
        },
        afterFinishInternal: function(effect) {
            effect.element.undoClipping().undoPositioned();
            effect.element.down().undoPositioned().setStyle({
                bottom: oldInnerBottom
            });
        }
    }, arguments[1] || {}));
};

Effect.SlideUp = function(element) {
    element = $(element).cleanWhitespace();
    var oldInnerBottom = element.down().getStyle('bottom');
    var elementDimensions = element.getDimensions();
    return new Effect.Scale(element, window.opera ? 0 : 1, Object.extend({
        scaleContent: false,
        scaleX: false,
        scaleMode: 'box',
        scaleFrom: 100,
        scaleMode: {
            originalHeight: elementDimensions.height,
            originalWidth: elementDimensions.width
        },
        restoreAfterFinish: true,
        afterSetup: function(effect) {
            effect.element.makePositioned();
            effect.element.down().makePositioned();
            if (window.opera) effect.element.setStyle({
                top: ''
            });
            effect.element.makeClipping().show();
        },
        afterUpdateInternal: function(effect) {
            effect.element.down().setStyle({
                bottom: (effect.dims[0] - effect.element.clientHeight) + 'px'
            });
        },
        afterFinishInternal: function(effect) {
            effect.element.hide().undoClipping().undoPositioned();
            effect.element.down().undoPositioned().setStyle({
                bottom: oldInnerBottom
            });
        }
    }, arguments[1] || {}));
};

// Bug in opera makes the TD containing this element expand for a instance after finish
Effect.Squish = function(element) {
    return new Effect.Scale(element, window.opera ? 1 : 0, {
        restoreAfterFinish: true,
        beforeSetup: function(effect) {
            effect.element.makeClipping();
        },
        afterFinishInternal: function(effect) {
            effect.element.hide().undoClipping();
        }
    });
};

Effect.Grow = function(element) {
    element = $(element);
    var options = Object.extend({
        direction: 'center',
        moveTransition: Effect.Transitions.sinoidal,
        scaleTransition: Effect.Transitions.sinoidal,
        opacityTransition: Effect.Transitions.full
    }, arguments[1] || {});
    var oldStyle = {
        top: element.style.top,
        left: element.style.left,
        height: element.style.height,
        width: element.style.width,
        opacity: element.getInlineOpacity()
    };

    var dims = element.getDimensions();
    var initialMoveX, initialMoveY;
    var moveX, moveY;

    switch (options.direction) {
    case 'top-left':
        initialMoveX = initialMoveY = moveX = moveY = 0;
        break;
    case 'top-right':
        initialMoveX = dims.width;
        initialMoveY = moveY = 0;
        moveX = -dims.width;
        break;
    case 'bottom-left':
        initialMoveX = moveX = 0;
        initialMoveY = dims.height;
        moveY = -dims.height;
        break;
    case 'bottom-right':
        initialMoveX = dims.width;
        initialMoveY = dims.height;
        moveX = -dims.width;
        moveY = -dims.height;
        break;
    case 'center':
        initialMoveX = dims.width / 2;
        initialMoveY = dims.height / 2;
        moveX = -dims.width / 2;
        moveY = -dims.height / 2;
        break;
    }

    return new Effect.Move(element, {
        x: initialMoveX,
        y: initialMoveY,
        duration: 0.01,
        beforeSetup: function(effect) {
            effect.element.hide().makeClipping().makePositioned();
        },
        afterFinishInternal: function(effect) {
            new Effect.Parallel([new Effect.Opacity(effect.element, {
                sync: true,
                to: 1.0,
                from: 0.0,
                transition: options.opacityTransition
            }), new Effect.Move(effect.element, {
                x: moveX,
                y: moveY,
                sync: true,
                transition: options.moveTransition
            }), new Effect.Scale(effect.element, 100, {
                scaleMode: {
                    originalHeight: dims.height,
                    originalWidth: dims.width
                },
                sync: true,
                scaleFrom: window.opera ? 1 : 0,
                transition: options.scaleTransition,
                restoreAfterFinish: true
            })], Object.extend({
                beforeSetup: function(effect) {
                    effect.effects[0].element.setStyle({
                        height: '0px'
                    }).show();
                },
                afterFinishInternal: function(effect) {
                    effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle);
                }
            }, options));
        }
    });
};

Effect.Shrink = function(element) {
    element = $(element);
    var options = Object.extend({
        direction: 'center',
        moveTransition: Effect.Transitions.sinoidal,
        scaleTransition: Effect.Transitions.sinoidal,
        opacityTransition: Effect.Transitions.none
    }, arguments[1] || {});
    var oldStyle = {
        top: element.style.top,
        left: element.style.left,
        height: element.style.height,
        width: element.style.width,
        opacity: element.getInlineOpacity()
    };

    var dims = element.getDimensions();
    var moveX, moveY;

    switch (options.direction) {
    case 'top-left':
        moveX = moveY = 0;
        break;
    case 'top-right':
        moveX = dims.width;
        moveY = 0;
        break;
    case 'bottom-left':
        moveX = 0;
        moveY = dims.height;
        break;
    case 'bottom-right':
        moveX = dims.width;
        moveY = dims.height;
        break;
    case 'center':
        moveX = dims.width / 2;
        moveY = dims.height / 2;
        break;
    }

    return new Effect.Parallel([new Effect.Opacity(element, {
        sync: true,
        to: 0.0,
        from: 1.0,
        transition: options.opacityTransition
    }), new Effect.Scale(element, window.opera ? 1 : 0, {
        sync: true,
        transition: options.scaleTransition,
        restoreAfterFinish: true
    }), new Effect.Move(element, {
        x: moveX,
        y: moveY,
        sync: true,
        transition: options.moveTransition
    })], Object.extend({
        beforeStartInternal: function(effect) {
            effect.effects[0].element.makePositioned().makeClipping();
        },
        afterFinishInternal: function(effect) {
            effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle);
        }
    }, options));
};

Effect.Pulsate = function(element) {
    element = $(element);
    var options = arguments[1] || {},
        oldOpacity = element.getInlineOpacity(),
        transition = options.transition || Effect.Transitions.linear,
        reverser = function(pos) {
            return 1 - transition((-Math.cos((pos * (options.pulses || 5) * 2) * Math.PI) / 2) + .5);
        };

    return new Effect.Opacity(element, Object.extend(Object.extend({
        duration: 2.0,
        from: 0,
        afterFinishInternal: function(effect) {
            effect.element.setStyle({
                opacity: oldOpacity
            });
        }
    }, options), {
        transition: reverser
    }));
};

Effect.Fold = function(element) {
    element = $(element);
    var oldStyle = {
        top: element.style.top,
        left: element.style.left,
        width: element.style.width,
        height: element.style.height
    };
    element.makeClipping();
    return new Effect.Scale(element, 5, Object.extend({
        scaleContent: false,
        scaleX: false,
        afterFinishInternal: function(effect) {
            new Effect.Scale(element, 1, {
                scaleContent: false,
                scaleY: false,
                afterFinishInternal: function(effect) {
                    effect.element.hide().undoClipping().setStyle(oldStyle);
                }
            });
        }
    }, arguments[1] || {}));
};

Effect.Morph = Class.create(Effect.Base, {
    initialize: function(element) {
        this.element = $(element);
        if (!this.element) throw (Effect._elementDoesNotExistError);
        var options = Object.extend({
            style: {}
        }, arguments[1] || {});

        if (!Object.isString(options.style)) this.style = $H(options.style);
        else {
            if (options.style.include(':')) this.style = options.style.parseStyle();
            else {
                this.element.addClassName(options.style);
                this.style = $H(this.element.getStyles());
                this.element.removeClassName(options.style);
                var css = this.element.getStyles();
                this.style = this.style.reject(function(style) {
                    return style.value == css[style.key];
                });
                options.afterFinishInternal = function(effect) {
                    effect.element.addClassName(effect.options.style);
                    effect.transforms.each(function(transform) {
                        effect.element.style[transform.style] = '';
                    });
                };
            }
        }
        this.start(options);
    },

    setup: function() {
        function parseColor(color) {
            if (!color || ['rgba(0, 0, 0, 0)', 'transparent'].include(color)) color = '#ffffff';
            color = color.parseColor();
            return $R(0, 2).map(function(i) {
                return parseInt(color.slice(i * 2 + 1, i * 2 + 3), 16);
            });
        }
        this.transforms = this.style.map(function(pair) {
            var property = pair[0],
                value = pair[1],
                unit = null;

            if (value.parseColor('#zzzzzz') != '#zzzzzz') {
                value = value.parseColor();
                unit = 'color';
            } else if (property == 'opacity') {
                value = parseFloat(value);
                if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout)) this.element.setStyle({
                    zoom: 1
                });
            } else if (Element.CSS_LENGTH.test(value)) {
                var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
                value = parseFloat(components[1]);
                unit = (components.length == 3) ? components[2] : null;
            }

            var originalValue = this.element.getStyle(property);
            return {
                style: property.camelize(),
                originalValue: unit == 'color' ? parseColor(originalValue) : parseFloat(originalValue || 0),
                targetValue: unit == 'color' ? parseColor(value) : value,
                unit: unit
            };
        }.bind(this)).reject(function(transform) {
            return ((transform.originalValue == transform.targetValue) || (
            transform.unit != 'color' && (isNaN(transform.originalValue) || isNaN(transform.targetValue))));
        });
    },
    update: function(position) {
        var style = {},
            transform, i = this.transforms.length;
        while (i--)
        style[(transform = this.transforms[i]).style] =
        transform.unit == 'color' ? '#' + (Math.round(transform.originalValue[0] + (transform.targetValue[0] - transform.originalValue[0]) * position)).toColorPart() + (Math.round(transform.originalValue[1] + (transform.targetValue[1] - transform.originalValue[1]) * position)).toColorPart() + (Math.round(transform.originalValue[2] + (transform.targetValue[2] - transform.originalValue[2]) * position)).toColorPart() : (transform.originalValue + (transform.targetValue - transform.originalValue) * position).toFixed(3) + (transform.unit === null ? '' : transform.unit);
        this.element.setStyle(style, true);
    }
});

Effect.Transform = Class.create({
    initialize: function(tracks) {
        this.tracks = [];
        this.options = arguments[1] || {};
        this.addTracks(tracks);
    },
    addTracks: function(tracks) {
        tracks.each(function(track) {
            track = $H(track);
            var data = track.values().first();
            this.tracks.push($H({
                ids: track.keys().first(),
                effect: Effect.Morph,
                options: {
                    style: data
                }
            }));
        }.bind(this));
        return this;
    },
    play: function() {
        return new Effect.Parallel(
        this.tracks.map(function(track) {
            var ids = track.get('ids'),
                effect = track.get('effect'),
                options = track.get('options');
            var elements = [$(ids) || $$(ids)].flatten();
            return elements.map(function(e) {
                return new effect(e, Object.extend({
                    sync: true
                }, options))
            });
        }).flatten(), this.options);
    }
});

Element.CSS_PROPERTIES = $w('backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' + 'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' + 'borderRightColor borderRightStyle borderRightWidth borderSpacing ' + 'borderTopColor borderTopStyle borderTopWidth bottom clip color ' + 'fontSize fontWeight height left letterSpacing lineHeight ' + 'marginBottom marginLeft marginRight marginTop markerOffset maxHeight ' + 'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' + 'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' + 'right textIndent top width wordSpacing zIndex');

Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;

String.__parseStyleElement = document.createElement('div');
String.prototype.parseStyle = function() {
    var style, styleRules = $H();
    if (Prototype.Browser.WebKit) style = new Element('div', {
        style: this
    }).style;
    else {
        String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
        style = String.__parseStyleElement.childNodes[0].style;
    }

    Element.CSS_PROPERTIES.each(function(property) {
        if (style[property]) styleRules.set(property, style[property]);
    });

    if (Prototype.Browser.IE && this.include('opacity')) styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);

    return styleRules;
};

if (document.defaultView && document.defaultView.getComputedStyle) {
    Element.getStyles = function(element) {
        var css = document.defaultView.getComputedStyle($(element), null);
        return Element.CSS_PROPERTIES.inject({}, function(styles, property) {
            styles[property] = css[property];
            return styles;
        });
    };
} else {
    Element.getStyles = function(element) {
        element = $(element);
        var css = element.currentStyle,
            styles;
        styles = Element.CSS_PROPERTIES.inject({}, function(results, property) {
            results[property] = css[property];
            return results;
        });
        if (!styles.opacity) styles.opacity = element.getOpacity();
        return styles;
    };
}

Effect.Methods = {
    morph: function(element, style) {
        element = $(element);
        new Effect.Morph(element, Object.extend({
            style: style
        }, arguments[2] || {}));
        return element;
    },
    visualEffect: function(element, effect, options) {
        element = $(element);
        var s = effect.dasherize().camelize(),
            klass = s.charAt(0).toUpperCase() + s.substring(1);
        new Effect[klass](element, options);
        return element;
    },
    highlight: function(element, options) {
        element = $(element);
        new Effect.Highlight(element, options);
        return element;
    }
};

$w('fade appear grow shrink fold blindUp blindDown slideUp slideDown ' + 'pulsate shake puff squish switchOff dropOut').each(

function(effect) {
    Effect.Methods[effect] = function(element, options) {
        element = $(element);
        Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
        return element;
    };
});

$w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each(

function(f) {
    Effect.Methods[f] = Element[f];
});

Element.addMethods(Effect.Methods); // script.aculo.us builder.js v1.9.0, Thu Dec 23 16:54:48 -0500 2010
// Copyright (c) 2005-2010 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/
var Builder = {
    NODEMAP: {
        AREA: 'map',
        CAPTION: 'table',
        COL: 'table',
        COLGROUP: 'table',
        LEGEND: 'fieldset',
        OPTGROUP: 'select',
        OPTION: 'select',
        PARAM: 'object',
        TBODY: 'table',
        TD: 'table',
        TFOOT: 'table',
        TH: 'table',
        THEAD: 'table',
        TR: 'table'
    },
    // note: For Firefox < 1.5, OPTION and OPTGROUP tags are currently broken,
    //       due to a Firefox bug
    node: function(elementName) {
        elementName = elementName.toUpperCase();

        // try innerHTML approach
        var parentTag = this.NODEMAP[elementName] || 'div';
        var parentElement = document.createElement(parentTag);
        try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
            parentElement.innerHTML = "<" + elementName + "></" + elementName + ">";
        } catch (e) {}
        var element = parentElement.firstChild || null;

        // see if browser added wrapping tags
        if (element && (element.tagName.toUpperCase() != elementName)) element = element.getElementsByTagName(elementName)[0];

        // fallback to createElement approach
        if (!element) element = document.createElement(elementName);

        // abort if nothing could be created
        if (!element) return;

        // attributes (or text)
        if (arguments[1]) if (this._isStringOrNumber(arguments[1]) || (arguments[1] instanceof Array) || arguments[1].tagName) {
            this._children(element, arguments[1]);
        } else {
            var attrs = this._attributes(arguments[1]);
            if (attrs.length) {
                try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
                    parentElement.innerHTML = "<" + elementName + " " + attrs + "></" + elementName + ">";
                } catch (e) {}
                element = parentElement.firstChild || null;
                // workaround firefox 1.0.X bug
                if (!element) {
                    element = document.createElement(elementName);
                    for (attr in arguments[1])
                    element[attr == 'class' ? 'className' : attr] = arguments[1][attr];
                }
                if (element.tagName.toUpperCase() != elementName) element = parentElement.getElementsByTagName(elementName)[0];
            }
        }

        // text, or array of children
        if (arguments[2]) this._children(element, arguments[2]);

        return $(element);
    },
    _text: function(text) {
        return document.createTextNode(text);
    },

    ATTR_MAP: {
        'className': 'class',
        'htmlFor': 'for'
    },

    _attributes: function(attributes) {
        var attrs = [];
        for (attribute in attributes)
        attrs.push((attribute in this.ATTR_MAP ? this.ATTR_MAP[attribute] : attribute) + '="' + attributes[attribute].toString().escapeHTML().gsub(/"/, '&quot;') + '"');
        return attrs.join(" ");
    },
    _children: function(element, children) {
        if (children.tagName) {
            element.appendChild(children);
            return;
        }
        if (typeof children == 'object') { // array can hold nodes and text
            children.flatten().each(function(e) {
                if (typeof e == 'object') element.appendChild(e);
                else
                if (Builder._isStringOrNumber(e)) element.appendChild(Builder._text(e));
            });
        } else
        if (Builder._isStringOrNumber(children)) element.appendChild(Builder._text(children));
    },
    _isStringOrNumber: function(param) {
        return (typeof param == 'string' || typeof param == 'number');
    },
    build: function(html) {
        var element = this.node('div');
        $(element).update(html.strip());
        return element.down();
    },
    dump: function(scope) {
        if (typeof scope != 'object' && typeof scope != 'function') scope = window; //global scope
        var tags = ("A ABBR ACRONYM ADDRESS APPLET AREA B BASE BASEFONT BDO BIG BLOCKQUOTE BODY " + "BR BUTTON CAPTION CENTER CITE CODE COL COLGROUP DD DEL DFN DIR DIV DL DT EM FIELDSET " + "FONT FORM FRAME FRAMESET H1 H2 H3 H4 H5 H6 HEAD HR HTML I IFRAME IMG INPUT INS ISINDEX " + "KBD LABEL LEGEND LI LINK MAP MENU META NOFRAMES NOSCRIPT OBJECT OL OPTGROUP OPTION P " + "PARAM PRE Q S SAMP SCRIPT SELECT SMALL SPAN STRIKE STRONG STYLE SUB SUP TABLE TBODY TD " + "TEXTAREA TFOOT TH THEAD TITLE TR TT U UL VAR").split(/\s+/);

        tags.each(function(tag) {
            scope[tag] = function() {
                return Builder.node.apply(Builder, [tag].concat($A(arguments)));
            };
        });
    }
}; // script.aculo.us dragdrop.js v1.9.0, Thu Dec 23 16:54:48 -0500 2010
// Copyright (c) 2005-2010 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/
if (Object.isUndefined(Effect)) throw ("dragdrop.js requires including script.aculo.us' effects.js library");

var Droppables = {
    drops: [],

    remove: function(element) {
        this.drops = this.drops.reject(function(d) {
            return d.element == $(element)
        });
    },

    add: function(element) {
        element = $(element);
        var options = Object.extend({
            greedy: true,
            hoverclass: null,
            tree: false
        }, arguments[1] || {});

        // cache containers
        if (options.containment) {
            options._containers = [];
            var containment = options.containment;
            if (Object.isArray(containment)) {
                containment.each(function(c) {
                    options._containers.push($(c))
                });
            } else {
                options._containers.push($(containment));
            }
        }

        if (options.accept) options.accept = [options.accept].flatten();

        Element.makePositioned(element); // fix IE
        options.element = element;

        this.drops.push(options);
    },

    findDeepestChild: function(drops) {
        deepest = drops[0];

        for (i = 1; i < drops.length; ++i)
        if (Element.isParent(drops[i].element, deepest.element)) deepest = drops[i];

        return deepest;
    },

    isContained: function(element, drop) {
        var containmentNode;
        if (drop.tree) {
            containmentNode = element.treeNode;
        } else {
            containmentNode = element.parentNode;
        }
        return drop._containers.detect(function(c) {
            return containmentNode == c
        });
    },

    isAffected: function(point, element, drop) {
        return ((drop.element != element) && ((!drop._containers) || this.isContained(element, drop)) && ((!drop.accept) || (Element.classNames(element).detect(

        function(v) {
            return drop.accept.include(v)
        }))) && Position.within(drop.element, point[0], point[1]));
    },

    deactivate: function(drop) {
        if (drop.hoverclass) Element.removeClassName(drop.element, drop.hoverclass);
        this.last_active = null;
    },

    activate: function(drop) {
        if (drop.hoverclass) Element.addClassName(drop.element, drop.hoverclass);
        this.last_active = drop;
    },

    show: function(point, element) {
        if (!this.drops.length) return;
        var drop, affected = [];

        this.drops.each(function(drop) {
            if (Droppables.isAffected(point, element, drop)) affected.push(drop);
        });

        if (affected.length > 0) drop = Droppables.findDeepestChild(affected);

        if (this.last_active && this.last_active != drop) this.deactivate(this.last_active);
        if (drop) {
            Position.within(drop.element, point[0], point[1]);
            if (drop.onHover) drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));

            if (drop != this.last_active) Droppables.activate(drop);
        }
    },

    fire: function(event, element) {
        if (!this.last_active) return;
        Position.prepare();

        if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active)) if (this.last_active.onDrop) {
            this.last_active.onDrop(element, this.last_active.element, event);
            return true;
        }
    },

    reset: function() {
        if (this.last_active) this.deactivate(this.last_active);
    }
};

var Draggables = {
    drags: [],
    observers: [],

    register: function(draggable) {
        if (this.drags.length == 0) {
            this.eventMouseUp = this.endDrag.bindAsEventListener(this);
            this.eventMouseMove = this.updateDrag.bindAsEventListener(this);
            this.eventKeypress = this.keyPress.bindAsEventListener(this);

            Event.observe(document, "mouseup", this.eventMouseUp);
            Event.observe(document, "mousemove", this.eventMouseMove);
            Event.observe(document, "keypress", this.eventKeypress);
        }
        this.drags.push(draggable);
    },

    unregister: function(draggable) {
        this.drags = this.drags.reject(function(d) {
            return d == draggable
        });
        if (this.drags.length == 0) {
            Event.stopObserving(document, "mouseup", this.eventMouseUp);
            Event.stopObserving(document, "mousemove", this.eventMouseMove);
            Event.stopObserving(document, "keypress", this.eventKeypress);
        }
    },

    activate: function(draggable) {
        if (draggable.options.delay) {
            this._timeout = setTimeout(function() {
                Draggables._timeout = null;
                window.focus();
                Draggables.activeDraggable = draggable;
            }.bind(this), draggable.options.delay);
        } else {
            window.focus(); // allows keypress events if window isn't currently focused, fails for Safari
            this.activeDraggable = draggable;
        }
    },

    deactivate: function() {
        this.activeDraggable = null;
    },

    updateDrag: function(event) {
        if (!this.activeDraggable) return;
        var pointer = [Event.pointerX(event), Event.pointerY(event)];
        // Mozilla-based browsers fire successive mousemove events with
        // the same coordinates, prevent needless redrawing (moz bug?)
        if (this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return;
        this._lastPointer = pointer;

        this.activeDraggable.updateDrag(event, pointer);
    },

    endDrag: function(event) {
        if (this._timeout) {
            clearTimeout(this._timeout);
            this._timeout = null;
        }
        if (!this.activeDraggable) return;
        this._lastPointer = null;
        this.activeDraggable.endDrag(event);
        this.activeDraggable = null;
    },

    keyPress: function(event) {
        if (this.activeDraggable) this.activeDraggable.keyPress(event);
    },

    addObserver: function(observer) {
        this.observers.push(observer);
        this._cacheObserverCallbacks();
    },

    removeObserver: function(element) { // element instead of observer fixes mem leaks
        this.observers = this.observers.reject(function(o) {
            return o.element == element
        });
        this._cacheObserverCallbacks();
    },

    notify: function(eventName, draggable, event) { // 'onStart', 'onEnd', 'onDrag'
        if (this[eventName + 'Count'] > 0) this.observers.each(function(o) {
            if (o[eventName]) o[eventName](eventName, draggable, event);
        });
        if (draggable.options[eventName]) draggable.options[eventName](draggable, event);
    },

    _cacheObserverCallbacks: function() {
        ['onStart', 'onEnd', 'onDrag'].each(function(eventName) {
            Draggables[eventName + 'Count'] = Draggables.observers.select(

            function(o) {
                return o[eventName];
            }).length;
        });
    }
};

/*--------------------------------------------------------------------------*/

var Draggable = Class.create({
    initialize: function(element) {
        var defaults = {
            handle: false,
            reverteffect: function(element, top_offset, left_offset) {
                var dur = Math.sqrt(Math.abs(top_offset ^ 2) + Math.abs(left_offset ^ 2)) * 0.02;
                new Effect.Move(element, {
                    x: -left_offset,
                    y: -top_offset,
                    duration: dur,
                    queue: {
                        scope: '_draggable',
                        position: 'end'
                    }
                });
            },
            endeffect: function(element) {
                var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0;
                new Effect.Opacity(element, {
                    duration: 0.2,
                    from: 0.7,
                    to: toOpacity,
                    queue: {
                        scope: '_draggable',
                        position: 'end'
                    },
                    afterFinish: function() {
                        Draggable._dragging[element] = false
                    }
                });
            },
            zindex: 1000,
            revert: false,
            quiet: false,
            scroll: false,
            scrollSensitivity: 20,
            scrollSpeed: 15,
            snap: false,
            // false, or xy or [x,y] or function(x,y){ return [x,y] }
            delay: 0
        };

        if (!arguments[1] || Object.isUndefined(arguments[1].endeffect)) Object.extend(defaults, {
            starteffect: function(element) {
                element._opacity = Element.getOpacity(element);
                Draggable._dragging[element] = true;
                new Effect.Opacity(element, {
                    duration: 0.2,
                    from: element._opacity,
                    to: 0.7
                });
            }
        });

        var options = Object.extend(defaults, arguments[1] || {});

        this.element = $(element);

        if (options.handle && Object.isString(options.handle)) this.handle = this.element.down('.' + options.handle, 0);

        if (!this.handle) this.handle = $(options.handle);
        if (!this.handle) this.handle = this.element;

        if (options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) {
            options.scroll = $(options.scroll);
            this._isScrollChild = Element.childOf(this.element, options.scroll);
        }

        Element.makePositioned(this.element); // fix IE
        this.options = options;
        this.dragging = false;

        this.eventMouseDown = this.initDrag.bindAsEventListener(this);
        Event.observe(this.handle, "mousedown", this.eventMouseDown);

        Draggables.register(this);
    },

    destroy: function() {
        Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
        Draggables.unregister(this);
    },

    currentDelta: function() {
        return ([
        parseInt(Element.getStyle(this.element, 'left') || '0'), parseInt(Element.getStyle(this.element, 'top') || '0')]);
    },

    initDrag: function(event) {
        if (!Object.isUndefined(Draggable._dragging[this.element]) && Draggable._dragging[this.element]) return;
        if (Event.isLeftClick(event)) {
            // abort on form elements, fixes a Firefox issue
            var src = Event.element(event);
            if ((tag_name = src.tagName.toUpperCase()) && (
            tag_name == 'INPUT' || tag_name == 'SELECT' || tag_name == 'OPTION' || tag_name == 'BUTTON' || tag_name == 'TEXTAREA')) return;

            var pointer = [Event.pointerX(event), Event.pointerY(event)];
            var pos = this.element.cumulativeOffset();
            this.offset = [0, 1].map(function(i) {
                return (pointer[i] - pos[i])
            });

            Draggables.activate(this);
            Event.stop(event);
        }
    },

    startDrag: function(event) {
        this.dragging = true;
        if (!this.delta) this.delta = this.currentDelta();

        if (this.options.zindex) {
            this.originalZ = parseInt(Element.getStyle(this.element, 'z-index') || 0);
            this.element.style.zIndex = this.options.zindex;
        }

        if (this.options.ghosting) {
            this._clone = this.element.cloneNode(true);
            this._originallyAbsolute = (this.element.getStyle('position') == 'absolute');
            if (!this._originallyAbsolute) Position.absolutize(this.element);
            this.element.parentNode.insertBefore(this._clone, this.element);
        }

        if (this.options.scroll) {
            if (this.options.scroll == window) {
                var where = this._getWindowScroll(this.options.scroll);
                this.originalScrollLeft = where.left;
                this.originalScrollTop = where.top;
            } else {
                this.originalScrollLeft = this.options.scroll.scrollLeft;
                this.originalScrollTop = this.options.scroll.scrollTop;
            }
        }

        Draggables.notify('onStart', this, event);

        if (this.options.starteffect) this.options.starteffect(this.element);
    },

    updateDrag: function(event, pointer) {
        if (!this.dragging) this.startDrag(event);

        if (!this.options.quiet) {
            Position.prepare();
            Droppables.show(pointer, this.element);
        }

        Draggables.notify('onDrag', this, event);

        this.draw(pointer);
        if (this.options.change) this.options.change(this);

        if (this.options.scroll) {
            this.stopScrolling();

            var p;
            if (this.options.scroll == window) {
                with(this._getWindowScroll(this.options.scroll)) {
                    p = [left, top, left + width, top + height];
                }
            } else {
                p = Position.page(this.options.scroll).toArray();
                p[0] += this.options.scroll.scrollLeft + Position.deltaX;
                p[1] += this.options.scroll.scrollTop + Position.deltaY;
                p.push(p[0] + this.options.scroll.offsetWidth);
                p.push(p[1] + this.options.scroll.offsetHeight);
            }
            var speed = [0, 0];
            if (pointer[0] < (p[0] + this.options.scrollSensitivity)) speed[0] = pointer[0] - (p[0] + this.options.scrollSensitivity);
            if (pointer[1] < (p[1] + this.options.scrollSensitivity)) speed[1] = pointer[1] - (p[1] + this.options.scrollSensitivity);
            if (pointer[0] > (p[2] - this.options.scrollSensitivity)) speed[0] = pointer[0] - (p[2] - this.options.scrollSensitivity);
            if (pointer[1] > (p[3] - this.options.scrollSensitivity)) speed[1] = pointer[1] - (p[3] - this.options.scrollSensitivity);
            this.startScrolling(speed);
        }

        // fix AppleWebKit rendering
        if (Prototype.Browser.WebKit) window.scrollBy(0, 0);

        Event.stop(event);
    },

    finishDrag: function(event, success) {
        this.dragging = false;

        if (this.options.quiet) {
            Position.prepare();
            var pointer = [Event.pointerX(event), Event.pointerY(event)];
            Droppables.show(pointer, this.element);
        }

        if (this.options.ghosting) {
            if (!this._originallyAbsolute) Position.relativize(this.element);
            delete this._originallyAbsolute;
            Element.remove(this._clone);
            this._clone = null;
        }

        var dropped = false;
        if (success) {
            dropped = Droppables.fire(event, this.element);
            if (!dropped) dropped = false;
        }
        if (dropped && this.options.onDropped) this.options.onDropped(this.element);
        Draggables.notify('onEnd', this, event);

        var revert = this.options.revert;
        if (revert && Object.isFunction(revert)) revert = revert(this.element);

        var d = this.currentDelta();
        if (revert && this.options.reverteffect) {
            if (dropped == 0 || revert != 'failure') this.options.reverteffect(this.element, d[1] - this.delta[1], d[0] - this.delta[0]);
        } else {
            this.delta = d;
        }

        if (this.options.zindex) this.element.style.zIndex = this.originalZ;

        if (this.options.endeffect) this.options.endeffect(this.element);

        Draggables.deactivate(this);
        Droppables.reset();
    },

    keyPress: function(event) {
        if (event.keyCode != Event.KEY_ESC) return;
        this.finishDrag(event, false);
        Event.stop(event);
    },

    endDrag: function(event) {
        if (!this.dragging) return;
        this.stopScrolling();
        this.finishDrag(event, true);
        Event.stop(event);
    },

    draw: function(point) {
        var pos = this.element.cumulativeOffset();
        if (this.options.ghosting) {
            var r = Position.realOffset(this.element);
            pos[0] += r[0] - Position.deltaX;
            pos[1] += r[1] - Position.deltaY;
        }

        var d = this.currentDelta();
        pos[0] -= d[0];
        pos[1] -= d[1];

        if (this.options.scroll && (this.options.scroll != window && this._isScrollChild)) {
            pos[0] -= this.options.scroll.scrollLeft - this.originalScrollLeft;
            pos[1] -= this.options.scroll.scrollTop - this.originalScrollTop;
        }

        var p = [0, 1].map(function(i) {
            return (point[i] - pos[i] - this.offset[i])
        }.bind(this));

        if (this.options.snap) {
            if (Object.isFunction(this.options.snap)) {
                p = this.options.snap(p[0], p[1], this);
            } else {
                if (Object.isArray(this.options.snap)) {
                    p = p.map(function(v, i) {
                        return (v / this.options.snap[i]).round() * this.options.snap[i]
                    }.bind(this));
                } else {
                    p = p.map(function(v) {
                        return (v / this.options.snap).round() * this.options.snap
                    }.bind(this));
                }
            }
        }

        var style = this.element.style;
        if ((!this.options.constraint) || (this.options.constraint == 'horizontal')) style.left = p[0] + "px";
        if ((!this.options.constraint) || (this.options.constraint == 'vertical')) style.top = p[1] + "px";

        if (style.visibility == "hidden") style.visibility = ""; // fix gecko rendering
    },

    stopScrolling: function() {
        if (this.scrollInterval) {
            clearInterval(this.scrollInterval);
            this.scrollInterval = null;
            Draggables._lastScrollPointer = null;
        }
    },

    startScrolling: function(speed) {
        if (!(speed[0] || speed[1])) return;
        this.scrollSpeed = [speed[0] * this.options.scrollSpeed, speed[1] * this.options.scrollSpeed];
        this.lastScrolled = new Date();
        this.scrollInterval = setInterval(this.scroll.bind(this), 10);
    },

    scroll: function() {
        var current = new Date();
        var delta = current - this.lastScrolled;
        this.lastScrolled = current;
        if (this.options.scroll == window) {
            with(this._getWindowScroll(this.options.scroll)) {
                if (this.scrollSpeed[0] || this.scrollSpeed[1]) {
                    var d = delta / 1000;
                    this.options.scroll.scrollTo(left + d * this.scrollSpeed[0], top + d * this.scrollSpeed[1]);
                }
            }
        } else {
            this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000;
            this.options.scroll.scrollTop += this.scrollSpeed[1] * delta / 1000;
        }

        Position.prepare();
        Droppables.show(Draggables._lastPointer, this.element);
        Draggables.notify('onDrag', this);
        if (this._isScrollChild) {
            Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer);
            Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000;
            Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000;
            if (Draggables._lastScrollPointer[0] < 0) Draggables._lastScrollPointer[0] = 0;
            if (Draggables._lastScrollPointer[1] < 0) Draggables._lastScrollPointer[1] = 0;
            this.draw(Draggables._lastScrollPointer);
        }

        if (this.options.change) this.options.change(this);
    },

    _getWindowScroll: function(w) {
        var T, L, W, H;
        with(w.document) {
            if (w.document.documentElement && documentElement.scrollTop) {
                T = documentElement.scrollTop;
                L = documentElement.scrollLeft;
            } else if (w.document.body) {
                T = body.scrollTop;
                L = body.scrollLeft;
            }
            if (w.innerWidth) {
                W = w.innerWidth;
                H = w.innerHeight;
            } else if (w.document.documentElement && documentElement.clientWidth) {
                W = documentElement.clientWidth;
                H = documentElement.clientHeight;
            } else {
                W = body.offsetWidth;
                H = body.offsetHeight;
            }
        }
        return {
            top: T,
            left: L,
            width: W,
            height: H
        };
    }
});

Draggable._dragging = {};

/*--------------------------------------------------------------------------*/

var SortableObserver = Class.create({
    initialize: function(element, observer) {
        this.element = $(element);
        this.observer = observer;
        this.lastValue = Sortable.serialize(this.element);
    },

    onStart: function() {
        this.lastValue = Sortable.serialize(this.element);
    },

    onEnd: function() {
        Sortable.unmark();
        if (this.lastValue != Sortable.serialize(this.element)) this.observer(this.element)
    }
});

var Sortable = {
    SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/,

    sortables: {},

    _findRootElement: function(element) {
        while (element.tagName.toUpperCase() != "BODY") {
            if (element.id && Sortable.sortables[element.id]) return element;
            element = element.parentNode;
        }
    },

    options: function(element) {
        element = Sortable._findRootElement($(element));
        if (!element) return;
        return Sortable.sortables[element.id];
    },

    destroy: function(element) {
        element = $(element);
        var s = Sortable.sortables[element.id];

        if (s) {
            Draggables.removeObserver(s.element);
            s.droppables.each(function(d) {
                Droppables.remove(d)
            });
            s.draggables.invoke('destroy');

            delete Sortable.sortables[s.element.id];
        }
    },

    create: function(element) {
        element = $(element);
        var options = Object.extend({
            element: element,
            tag: 'li',
            // assumes li children, override with tag: 'tagname'
            dropOnEmpty: false,
            tree: false,
            treeTag: 'ul',
            overlap: 'vertical',
            // one of 'vertical', 'horizontal'
            constraint: 'vertical',
            // one of 'vertical', 'horizontal', false
            containment: element,
            // also takes array of elements (or id's); or false
            handle: false,
            // or a CSS class
            only: false,
            delay: 0,
            hoverclass: null,
            ghosting: false,
            quiet: false,
            scroll: false,
            scrollSensitivity: 20,
            scrollSpeed: 15,
            format: this.SERIALIZE_RULE,

            // these take arrays of elements or ids and can be
            // used for better initialization performance
            elements: false,
            handles: false,

            onChange: Prototype.emptyFunction,
            onUpdate: Prototype.emptyFunction
        }, arguments[1] || {});

        // clear any old sortable with same element
        this.destroy(element);

        // build options for the draggables
        var options_for_draggable = {
            revert: true,
            quiet: options.quiet,
            scroll: options.scroll,
            scrollSpeed: options.scrollSpeed,
            scrollSensitivity: options.scrollSensitivity,
            delay: options.delay,
            ghosting: options.ghosting,
            constraint: options.constraint,
            handle: options.handle
        };

        if (options.starteffect) options_for_draggable.starteffect = options.starteffect;

        if (options.reverteffect) options_for_draggable.reverteffect = options.reverteffect;
        else
        if (options.ghosting) options_for_draggable.reverteffect = function(element) {
            element.style.top = 0;
            element.style.left = 0;
        };

        if (options.endeffect) options_for_draggable.endeffect = options.endeffect;

        if (options.zindex) options_for_draggable.zindex = options.zindex;

        // build options for the droppables
        var options_for_droppable = {
            overlap: options.overlap,
            containment: options.containment,
            tree: options.tree,
            hoverclass: options.hoverclass,
            onHover: Sortable.onHover
        };

        var options_for_tree = {
            onHover: Sortable.onEmptyHover,
            overlap: options.overlap,
            containment: options.containment,
            hoverclass: options.hoverclass
        };

        // fix for gecko engine
        Element.cleanWhitespace(element);

        options.draggables = [];
        options.droppables = [];

        // drop on empty handling
        if (options.dropOnEmpty || options.tree) {
            Droppables.add(element, options_for_tree);
            options.droppables.push(element);
        }

        (options.elements || this.findElements(element, options) || []).each(function(e, i) {
            var handle = options.handles ? $(options.handles[i]) : (options.handle ? $(e).select('.' + options.handle)[0] : e);
            options.draggables.push(
            new Draggable(e, Object.extend(options_for_draggable, {
                handle: handle
            })));
            Droppables.add(e, options_for_droppable);
            if (options.tree) e.treeNode = element;
            options.droppables.push(e);
        });

        if (options.tree) {
            (Sortable.findTreeElements(element, options) || []).each(function(e) {
                Droppables.add(e, options_for_tree);
                e.treeNode = element;
                options.droppables.push(e);
            });
        }

        // keep reference
        this.sortables[element.identify()] = options;

        // for onupdate
        Draggables.addObserver(new SortableObserver(element, options.onUpdate));

    },

    // return all suitable-for-sortable elements in a guaranteed order
    findElements: function(element, options) {
        return Element.findChildren(
        element, options.only, options.tree ? true : false, options.tag);
    },

    findTreeElements: function(element, options) {
        return Element.findChildren(
        element, options.only, options.tree ? true : false, options.treeTag);
    },

    onHover: function(element, dropon, overlap) {
        if (Element.isParent(dropon, element)) return;

        if (overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) {
            return;
        } else if (overlap > 0.5) {
            Sortable.mark(dropon, 'before');
            if (dropon.previousSibling != element) {
                var oldParentNode = element.parentNode;
                element.style.visibility = "hidden"; // fix gecko rendering
                dropon.parentNode.insertBefore(element, dropon);
                if (dropon.parentNode != oldParentNode) Sortable.options(oldParentNode).onChange(element);
                Sortable.options(dropon.parentNode).onChange(element);
            }
        } else {
            Sortable.mark(dropon, 'after');
            var nextElement = dropon.nextSibling || null;
            if (nextElement != element) {
                var oldParentNode = element.parentNode;
                element.style.visibility = "hidden"; // fix gecko rendering
                dropon.parentNode.insertBefore(element, nextElement);
                if (dropon.parentNode != oldParentNode) Sortable.options(oldParentNode).onChange(element);
                Sortable.options(dropon.parentNode).onChange(element);
            }
        }
    },

    onEmptyHover: function(element, dropon, overlap) {
        var oldParentNode = element.parentNode;
        var droponOptions = Sortable.options(dropon);

        if (!Element.isParent(dropon, element)) {
            var index;

            var children = Sortable.findElements(dropon, {
                tag: droponOptions.tag,
                only: droponOptions.only
            });
            var child = null;

            if (children) {
                var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap);

                for (index = 0; index < children.length; index += 1) {
                    if (offset - Element.offsetSize(children[index], droponOptions.overlap) >= 0) {
                        offset -= Element.offsetSize(children[index], droponOptions.overlap);
                    } else if (offset - (Element.offsetSize(children[index], droponOptions.overlap) / 2) >= 0) {
                        child = index + 1 < children.length ? children[index + 1] : null;
                        break;
                    } else {
                        child = children[index];
                        break;
                    }
                }
            }

            dropon.insertBefore(element, child);

            Sortable.options(oldParentNode).onChange(element);
            droponOptions.onChange(element);
        }
    },

    unmark: function() {
        if (Sortable._marker) Sortable._marker.hide();
    },

    mark: function(dropon, position) {
        // mark on ghosting only
        var sortable = Sortable.options(dropon.parentNode);
        if (sortable && !sortable.ghosting) return;

        if (!Sortable._marker) {
            Sortable._marker = ($('dropmarker') || Element.extend(document.createElement('DIV'))).
            hide().addClassName('dropmarker').setStyle({
                position: 'absolute'
            });
            document.getElementsByTagName("body").item(0).appendChild(Sortable._marker);
        }
        var offsets = dropon.cumulativeOffset();
        Sortable._marker.setStyle({
            left: offsets[0] + 'px',
            top: offsets[1] + 'px'
        });

        if (position == 'after') if (sortable.overlap == 'horizontal') Sortable._marker.setStyle({
            left: (offsets[0] + dropon.clientWidth) + 'px'
        });
        else
        Sortable._marker.setStyle({
            top: (offsets[1] + dropon.clientHeight) + 'px'
        });

        Sortable._marker.show();
    },

    _tree: function(element, options, parent) {
        var children = Sortable.findElements(element, options) || [];

        for (var i = 0; i < children.length; ++i) {
            var match = children[i].id.match(options.format);

            if (!match) continue;

            var child = {
                id: encodeURIComponent(match ? match[1] : null),
                element: element,
                parent: parent,
                children: [],
                position: parent.children.length,
                container: $(children[i]).down(options.treeTag)
            };

            /* Get the element containing the children and recurse over it */
            if (child.container) this._tree(child.container, options, child);

            parent.children.push(child);
        }

        return parent;
    },

    tree: function(element) {
        element = $(element);
        var sortableOptions = this.options(element);
        var options = Object.extend({
            tag: sortableOptions.tag,
            treeTag: sortableOptions.treeTag,
            only: sortableOptions.only,
            name: element.id,
            format: sortableOptions.format
        }, arguments[1] || {});

        var root = {
            id: null,
            parent: null,
            children: [],
            container: element,
            position: 0
        };

        return Sortable._tree(element, options, root);
    },

    /* Construct a [i] index for a particular node */
    _constructIndex: function(node) {
        var index = '';
        do {
            if (node.id) index = '[' + node.position + ']' + index;
        } while ((node = node.parent) != null);
        return index;
    },

    sequence: function(element) {
        element = $(element);
        var options = Object.extend(this.options(element), arguments[1] || {});

        return $(this.findElements(element, options) || []).map(function(item) {
            return item.id.match(options.format) ? item.id.match(options.format)[1] : '';
        });
    },

    setSequence: function(element, new_sequence) {
        element = $(element);
        var options = Object.extend(this.options(element), arguments[2] || {});

        var nodeMap = {};
        this.findElements(element, options).each(function(n) {
            if (n.id.match(options.format)) nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode];
            n.parentNode.removeChild(n);
        });

        new_sequence.each(function(ident) {
            var n = nodeMap[ident];
            if (n) {
                n[1].appendChild(n[0]);
                delete nodeMap[ident];
            }
        });
    },

    serialize: function(element) {
        element = $(element);
        var options = Object.extend(Sortable.options(element), arguments[1] || {});
        var name = encodeURIComponent((arguments[1] && arguments[1].name) ? arguments[1].name : element.id);

        if (options.tree) {
            return Sortable.tree(element, arguments[1]).children.map(function(item) {
                return [name + Sortable._constructIndex(item) + "[id]=" + encodeURIComponent(item.id)].concat(item.children.map(arguments.callee));
            }).flatten().join('&');
        } else {
            return Sortable.sequence(element, arguments[1]).map(function(item) {
                return name + "[]=" + encodeURIComponent(item);
            }).join('&');
        }
    }
};

// Returns true if child is contained within element
Element.isParent = function(child, element) {
    if (!child.parentNode || child == element) return false;
    if (child.parentNode == element) return true;
    return Element.isParent(child.parentNode, element);
};

Element.findChildren = function(element, only, recursive, tagName) {
    if (!element.hasChildNodes()) return null;
    tagName = tagName.toUpperCase();
    if (only) only = [only].flatten();
    var elements = [];
    $A(element.childNodes).each(function(e) {
        if (e.tagName && e.tagName.toUpperCase() == tagName && (!only || (Element.classNames(e).detect(function(v) {
            return only.include(v)
        })))) elements.push(e);
        if (recursive) {
            var grandchildren = Element.findChildren(e, only, recursive, tagName);
            if (grandchildren) elements.push(grandchildren);
        }
    });

    return (elements.length > 0 ? elements.flatten() : []);
};

Element.offsetSize = function(element, type) {
    return element['offset' + ((type == 'vertical' || type == 'height') ? 'Height' : 'Width')];
}; // script.aculo.us controls.js v1.9.0, Thu Dec 23 16:54:48 -0500 2010
// Copyright (c) 2005-2010 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//           (c) 2005-2010 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
//           (c) 2005-2010 Jon Tirsen (http://www.tirsen.com)
// Contributors:
//  Richard Livsey
//  Rahul Bhargava
//  Rob Wills
//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/
// Autocompleter.Base handles all the autocompletion functionality
// that's independent of the data source for autocompletion. This
// includes drawing the autocompletion menu, observing keyboard
// and mouse events, and similar.
//
// Specific autocompleters need to provide, at the very least,
// a getUpdatedChoices function that will be invoked every time
// the text inside the monitored textbox changes. This method
// should get the text for which to provide autocompletion by
// invoking this.getToken(), NOT by directly accessing
// this.element.value. This is to allow incremental tokenized
// autocompletion. Specific auto-completion logic (AJAX, etc)
// belongs in getUpdatedChoices.
//
// Tokenized incremental autocompletion is enabled automatically
// when an autocompleter is instantiated with the 'tokens' option
// in the options parameter, e.g.:
// new Ajax.Autocompleter('id','upd', '/url/', { tokens: ',' });
// will incrementally autocomplete with a comma as the token.
// Additionally, ',' in the above example can be replaced with
// a token array, e.g. { tokens: [',', '\n'] } which
// enables autocompletion on multiple tokens. This is most
// useful when one of the tokens is \n (a newline), as it
// allows smart autocompletion after linebreaks.
if (typeof Effect == 'undefined') throw ("controls.js requires including script.aculo.us' effects.js library");

var Autocompleter = {};
Autocompleter.Base = Class.create({
    baseInitialize: function(element, update, options) {
        element = $(element);
        this.element = element;
        this.update = $(update);
        this.hasFocus = false;
        this.changed = false;
        this.active = false;
        this.index = 0;
        this.entryCount = 0;
        this.oldElementValue = this.element.value;

        if (this.setOptions) this.setOptions(options);
        else
        this.options = options || {};

        this.options.paramName = this.options.paramName || this.element.name;
        this.options.tokens = this.options.tokens || [];
        this.options.frequency = this.options.frequency || 0.4;
        this.options.minChars = this.options.minChars || 1;
        this.options.onShow = this.options.onShow ||
        function(element, update) {
            if (!update.style.position || update.style.position == 'absolute') {
                update.style.position = 'absolute';
                Position.clone(element, update, {
                    setHeight: false,
                    offsetTop: element.offsetHeight
                });
            }
            Effect.Appear(update, {
                duration: 0.15
            });
        };
        this.options.onHide = this.options.onHide ||
        function(element, update) {
            new Effect.Fade(update, {
                duration: 0.15
            })
        };

        if (typeof(this.options.tokens) == 'string') this.options.tokens = new Array(this.options.tokens);
        // Force carriage returns as token delimiters anyway
        if (!this.options.tokens.include('\n')) this.options.tokens.push('\n');

        this.observer = null;

        this.element.setAttribute('autocomplete', 'off');

        Element.hide(this.update);

        Event.observe(this.element, 'blur', this.onBlur.bindAsEventListener(this));
        Event.observe(this.element, 'keydown', this.onKeyPress.bindAsEventListener(this));
    },

    show: function() {
        if (Element.getStyle(this.update, 'display') == 'none') this.options.onShow(this.element, this.update);
        if (!this.iefix && (Prototype.Browser.IE) && (Element.getStyle(this.update, 'position') == 'absolute')) {
            new Insertion.After(this.update, '<iframe id="' + this.update.id + '_iefix" ' + 'style="display:none;position:absolute;filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0);" ' + 'src="javascript:false;" frameborder="0" scrolling="no"></iframe>');
            this.iefix = $(this.update.id + '_iefix');
        }
        if (this.iefix) setTimeout(this.fixIEOverlapping.bind(this), 50);
    },

    fixIEOverlapping: function() {
        Position.clone(this.update, this.iefix, {
            setTop: (!this.update.style.height)
        });
        this.iefix.style.zIndex = 1;
        this.update.style.zIndex = 2;
        Element.show(this.iefix);
    },

    hide: function() {
        this.stopIndicator();
        if (Element.getStyle(this.update, 'display') != 'none') this.options.onHide(this.element, this.update);
        if (this.iefix) Element.hide(this.iefix);
    },

    startIndicator: function() {
        if (this.options.indicator) Element.show(this.options.indicator);
    },

    stopIndicator: function() {
        if (this.options.indicator) Element.hide(this.options.indicator);
    },

    onKeyPress: function(event) {
        if (this.active) switch (event.keyCode) {
        case Event.KEY_TAB:
        case Event.KEY_RETURN:
            this.selectEntry();
            Event.stop(event);
        case Event.KEY_ESC:
            this.hide();
            this.active = false;
            Event.stop(event);
            return;
        case Event.KEY_LEFT:
        case Event.KEY_RIGHT:
            return;
        case Event.KEY_UP:
            this.markPrevious();
            this.render();
            Event.stop(event);
            return;
        case Event.KEY_DOWN:
            this.markNext();
            this.render();
            Event.stop(event);
            return;
        } else
        if (event.keyCode == Event.KEY_TAB || event.keyCode == Event.KEY_RETURN || (Prototype.Browser.WebKit > 0 && event.keyCode == 0)) return;

        this.changed = true;
        this.hasFocus = true;

        if (this.observer) clearTimeout(this.observer);
        this.observer =
        setTimeout(this.onObserverEvent.bind(this), this.options.frequency * 1000);
    },

    activate: function() {
        this.changed = false;
        this.hasFocus = true;
        this.getUpdatedChoices();
    },

    onHover: function(event) {
        var element = Event.findElement(event, 'LI');
        if (this.index != element.autocompleteIndex) {
            this.index = element.autocompleteIndex;
            this.render();
        }
        Event.stop(event);
    },

    onClick: function(event) {
        var element = Event.findElement(event, 'LI');
        this.index = element.autocompleteIndex;
        this.selectEntry();
        this.hide();
    },

    onBlur: function(event) {
        // needed to make click events working
        setTimeout(this.hide.bind(this), 250);
        this.hasFocus = false;
        this.active = false;
    },

    render: function() {
        if (this.entryCount > 0) {
            for (var i = 0; i < this.entryCount; i++)
            this.index == i ? Element.addClassName(this.getEntry(i), "selected") : Element.removeClassName(this.getEntry(i), "selected");
            if (this.hasFocus) {
                this.show();
                this.active = true;
            }
        } else {
            this.active = false;
            this.hide();
        }
    },

    markPrevious: function() {
        if (this.index > 0) this.index--;
        else this.index = this.entryCount - 1;
        this.getEntry(this.index).scrollIntoView(true);
    },

    markNext: function() {
        if (this.index < this.entryCount - 1) this.index++;
        else this.index = 0;
        this.getEntry(this.index).scrollIntoView(false);
    },

    getEntry: function(index) {
        return this.update.firstChild.childNodes[index];
    },

    getCurrentEntry: function() {
        return this.getEntry(this.index);
    },

    selectEntry: function() {
        this.active = false;
        this.updateElement(this.getCurrentEntry());
    },

    updateElement: function(selectedElement) {
        if (this.options.updateElement) {
            this.options.updateElement(selectedElement);
            return;
        }
        var value = '';
        if (this.options.select) {
            var nodes = $(selectedElement).select('.' + this.options.select) || [];
            if (nodes.length > 0) value = Element.collectTextNodes(nodes[0], this.options.select);
        } else
        value = Element.collectTextNodesIgnoreClass(selectedElement, 'informal');

        var bounds = this.getTokenBounds();
        if (bounds[0] != -1) {
            var newValue = this.element.value.substr(0, bounds[0]);
            var whitespace = this.element.value.substr(bounds[0]).match(/^\s+/);
            if (whitespace) newValue += whitespace[0];
            this.element.value = newValue + value + this.element.value.substr(bounds[1]);
        } else {
            this.element.value = value;
        }
        this.oldElementValue = this.element.value;
        this.element.focus();

        if (this.options.afterUpdateElement) this.options.afterUpdateElement(this.element, selectedElement);
    },

    updateChoices: function(choices) {
        if (!this.changed && this.hasFocus) {
            this.update.innerHTML = choices;
            Element.cleanWhitespace(this.update);
            Element.cleanWhitespace(this.update.down());

            if (this.update.firstChild && this.update.down().childNodes) {
                this.entryCount =
                this.update.down().childNodes.length;
                for (var i = 0; i < this.entryCount; i++) {
                    var entry = this.getEntry(i);
                    entry.autocompleteIndex = i;
                    this.addObservers(entry);
                }
            } else {
                this.entryCount = 0;
            }

            this.stopIndicator();
            this.index = 0;

            if (this.entryCount == 1 && this.options.autoSelect) {
                this.selectEntry();
                this.hide();
            } else {
                this.render();
            }
        }
    },

    addObservers: function(element) {
        Event.observe(element, "mouseover", this.onHover.bindAsEventListener(this));
        Event.observe(element, "click", this.onClick.bindAsEventListener(this));
    },

    onObserverEvent: function() {
        this.changed = false;
        this.tokenBounds = null;
        if (this.getToken().length >= this.options.minChars) {
            this.getUpdatedChoices();
        } else {
            this.active = false;
            this.hide();
        }
        this.oldElementValue = this.element.value;
    },

    getToken: function() {
        var bounds = this.getTokenBounds();
        return this.element.value.substring(bounds[0], bounds[1]).strip();
    },

    getTokenBounds: function() {
        if (null != this.tokenBounds) return this.tokenBounds;
        var value = this.element.value;
        if (value.strip().empty()) return [-1, 0];
        var diff = arguments.callee.getFirstDifferencePos(value, this.oldElementValue);
        var offset = (diff == this.oldElementValue.length ? 1 : 0);
        var prevTokenPos = -1,
            nextTokenPos = value.length;
        var tp;
        for (var index = 0, l = this.options.tokens.length; index < l; ++index) {
            tp = value.lastIndexOf(this.options.tokens[index], diff + offset - 1);
            if (tp > prevTokenPos) prevTokenPos = tp;
            tp = value.indexOf(this.options.tokens[index], diff + offset);
            if (-1 != tp && tp < nextTokenPos) nextTokenPos = tp;
        }
        return (this.tokenBounds = [prevTokenPos + 1, nextTokenPos]);
    }
});

Autocompleter.Base.prototype.getTokenBounds.getFirstDifferencePos = function(newS, oldS) {
    var boundary = Math.min(newS.length, oldS.length);
    for (var index = 0; index < boundary; ++index)
    if (newS[index] != oldS[index]) return index;
    return boundary;
};

Ajax.Autocompleter = Class.create(Autocompleter.Base, {
    initialize: function(element, update, url, options) {
        this.baseInitialize(element, update, options);
        this.options.asynchronous = true;
        this.options.onComplete = this.onComplete.bind(this);
        this.options.defaultParams = this.options.parameters || null;
        this.url = url;
    },

    getUpdatedChoices: function() {
        this.startIndicator();

        var entry = encodeURIComponent(this.options.paramName) + '=' + encodeURIComponent(this.getToken());

        this.options.parameters = this.options.callback ? this.options.callback(this.element, entry) : entry;

        if (this.options.defaultParams) this.options.parameters += '&' + this.options.defaultParams;

        new Ajax.Request(this.url, this.options);
    },

    onComplete: function(request) {
        this.updateChoices(request.responseText);
    }
});

// The local array autocompleter. Used when you'd prefer to
// inject an array of autocompletion options into the page, rather
// than sending out Ajax queries, which can be quite slow sometimes.
//
// The constructor takes four parameters. The first two are, as usual,
// the id of the monitored textbox, and id of the autocompletion menu.
// The third is the array you want to autocomplete from, and the fourth
// is the options block.
//
// Extra local autocompletion options:
// - choices - How many autocompletion choices to offer
//
// - partialSearch - If false, the autocompleter will match entered
//                    text only at the beginning of strings in the
//                    autocomplete array. Defaults to true, which will
//                    match text at the beginning of any *word* in the
//                    strings in the autocomplete array. If you want to
//                    search anywhere in the string, additionally set
//                    the option fullSearch to true (default: off).
//
// - fullSsearch - Search anywhere in autocomplete array strings.
//
// - partialChars - How many characters to enter before triggering
//                   a partial match (unlike minChars, which defines
//                   how many characters are required to do any match
//                   at all). Defaults to 2.
//
// - ignoreCase - Whether to ignore case when autocompleting.
//                 Defaults to true.
//
// It's possible to pass in a custom function as the 'selector'
// option, if you prefer to write your own autocompletion logic.
// In that case, the other options above will not apply unless
// you support them.
Autocompleter.Local = Class.create(Autocompleter.Base, {
    initialize: function(element, update, array, options) {
        this.baseInitialize(element, update, options);
        this.options.array = array;
    },

    getUpdatedChoices: function() {
        this.updateChoices(this.options.selector(this));
    },

    setOptions: function(options) {
        this.options = Object.extend({
            choices: 10,
            partialSearch: true,
            partialChars: 2,
            ignoreCase: true,
            fullSearch: false,
            selector: function(instance) {
                var ret = []; // Beginning matches
                var partial = []; // Inside matches
                var entry = instance.getToken();
                var count = 0;

                for (var i = 0; i < instance.options.array.length && ret.length < instance.options.choices; i++) {

                    var elem = instance.options.array[i];
                    var foundPos = instance.options.ignoreCase ? elem.toLowerCase().indexOf(entry.toLowerCase()) : elem.indexOf(entry);

                    while (foundPos != -1) {
                        if (foundPos == 0 && elem.length != entry.length) {
                            ret.push("<li><strong>" + elem.substr(0, entry.length) + "</strong>" + elem.substr(entry.length) + "</li>");
                            break;
                        } else if (entry.length >= instance.options.partialChars && instance.options.partialSearch && foundPos != -1) {
                            if (instance.options.fullSearch || /\s/.test(elem.substr(foundPos - 1, 1))) {
                                partial.push("<li>" + elem.substr(0, foundPos) + "<strong>" + elem.substr(foundPos, entry.length) + "</strong>" + elem.substr(
                                foundPos + entry.length) + "</li>");
                                break;
                            }
                        }

                        foundPos = instance.options.ignoreCase ? elem.toLowerCase().indexOf(entry.toLowerCase(), foundPos + 1) : elem.indexOf(entry, foundPos + 1);

                    }
                }
                if (partial.length) ret = ret.concat(partial.slice(0, instance.options.choices - ret.length));
                return "<ul>" + ret.join('') + "</ul>";
            }
        }, options || {});
    }
});

// AJAX in-place editor and collection editor
// Full rewrite by Christophe Porteneuve <tdd@tddsworld.com> (April 2007).
// Use this if you notice weird scrolling problems on some browsers,
// the DOM might be a bit confused when this gets called so do this
// waits 1 ms (with setTimeout) until it does the activation
Field.scrollFreeActivate = function(field) {
    setTimeout(function() {
        Field.activate(field);
    }, 1);
};

Ajax.InPlaceEditor = Class.create({
    initialize: function(element, url, options) {
        this.url = url;
        this.element = element = $(element);
        this.prepareOptions();
        this._controls = {};
        arguments.callee.dealWithDeprecatedOptions(options); // DEPRECATION LAYER!!!
        Object.extend(this.options, options || {});
        if (!this.options.formId && this.element.id) {
            this.options.formId = this.element.id + '-inplaceeditor';
            if ($(this.options.formId)) this.options.formId = '';
        }
        if (this.options.externalControl) this.options.externalControl = $(this.options.externalControl);
        if (!this.options.externalControl) this.options.externalControlOnly = false;
        this._originalBackground = this.element.getStyle('background-color') || 'transparent';
        this.element.title = this.options.clickToEditText;
        this._boundCancelHandler = this.handleFormCancellation.bind(this);
        this._boundComplete = (this.options.onComplete || Prototype.emptyFunction).bind(this);
        this._boundFailureHandler = this.handleAJAXFailure.bind(this);
        this._boundSubmitHandler = this.handleFormSubmission.bind(this);
        this._boundWrapperHandler = this.wrapUp.bind(this);
        this.registerListeners();
    },
    checkForEscapeOrReturn: function(e) {
        if (!this._editing || e.ctrlKey || e.altKey || e.shiftKey) return;
        if (Event.KEY_ESC == e.keyCode) this.handleFormCancellation(e);
        else if (Event.KEY_RETURN == e.keyCode) this.handleFormSubmission(e);
    },
    createControl: function(mode, handler, extraClasses) {
        var control = this.options[mode + 'Control'];
        var text = this.options[mode + 'Text'];
        if ('button' == control) {
            var btn = document.createElement('input');
            btn.type = 'submit';
            btn.value = text;
            btn.className = 'editor_' + mode + '_button';
            if ('cancel' == mode) btn.onclick = this._boundCancelHandler;
            this._form.appendChild(btn);
            this._controls[mode] = btn;
        } else if ('link' == control) {
            var link = document.createElement('a');
            link.href = '#';
            link.appendChild(document.createTextNode(text));
            link.onclick = 'cancel' == mode ? this._boundCancelHandler : this._boundSubmitHandler;
            link.className = 'editor_' + mode + '_link';
            if (extraClasses) link.className += ' ' + extraClasses;
            this._form.appendChild(link);
            this._controls[mode] = link;
        }
    },
    createEditField: function() {
        var text = (this.options.loadTextURL ? this.options.loadingText : this.getText());
        var fld;
        if (1 >= this.options.rows && !/\r|\n/.test(this.getText())) {
            fld = document.createElement('input');
            fld.type = 'text';
            var size = this.options.size || this.options.cols || 0;
            if (0 < size) fld.size = size;
        } else {
            fld = document.createElement('textarea');
            fld.rows = (1 >= this.options.rows ? this.options.autoRows : this.options.rows);
            fld.cols = this.options.cols || 40;
        }
        fld.name = this.options.paramName;
        fld.value = text; // No HTML breaks conversion anymore
        fld.className = 'editor_field';
        if (this.options.submitOnBlur) fld.onblur = this._boundSubmitHandler;
        this._controls.editor = fld;
        if (this.options.loadTextURL) this.loadExternalText();
        this._form.appendChild(this._controls.editor);
    },
    createForm: function() {
        var ipe = this;

        function addText(mode, condition) {
            var text = ipe.options['text' + mode + 'Controls'];
            if (!text || condition === false) return;
            ipe._form.appendChild(document.createTextNode(text));
        };
        this._form = $(document.createElement('form'));
        this._form.id = this.options.formId;
        this._form.addClassName(this.options.formClassName);
        this._form.onsubmit = this._boundSubmitHandler;
        this.createEditField();
        if ('textarea' == this._controls.editor.tagName.toLowerCase()) this._form.appendChild(document.createElement('br'));
        if (this.options.onFormCustomization) this.options.onFormCustomization(this, this._form);
        addText('Before', this.options.okControl || this.options.cancelControl);
        this.createControl('ok', this._boundSubmitHandler);
        addText('Between', this.options.okControl && this.options.cancelControl);
        this.createControl('cancel', this._boundCancelHandler, 'editor_cancel');
        addText('After', this.options.okControl || this.options.cancelControl);
    },
    destroy: function() {
        if (this._oldInnerHTML) this.element.innerHTML = this._oldInnerHTML;
        this.leaveEditMode();
        this.unregisterListeners();
    },
    enterEditMode: function(e) {
        if (this._saving || this._editing) return;
        this._editing = true;
        this.triggerCallback('onEnterEditMode');
        if (this.options.externalControl) this.options.externalControl.hide();
        this.element.hide();
        this.createForm();
        this.element.parentNode.insertBefore(this._form, this.element);
        if (!this.options.loadTextURL) this.postProcessEditField();
        if (e) Event.stop(e);
    },
    enterHover: function(e) {
        if (this.options.hoverClassName) this.element.addClassName(this.options.hoverClassName);
        if (this._saving) return;
        this.triggerCallback('onEnterHover');
    },
    getText: function() {
        return this.element.innerHTML.unescapeHTML();
    },
    handleAJAXFailure: function(transport) {
        this.triggerCallback('onFailure', transport);
        if (this._oldInnerHTML) {
            this.element.innerHTML = this._oldInnerHTML;
            this._oldInnerHTML = null;
        }
    },
    handleFormCancellation: function(e) {
        this.wrapUp();
        if (e) Event.stop(e);
    },
    handleFormSubmission: function(e) {
        var form = this._form;
        var value = $F(this._controls.editor);
        this.prepareSubmission();
        var params = this.options.callback(form, value) || '';
        if (Object.isString(params)) params = params.toQueryParams();
        params.editorId = this.element.id;
        if (this.options.htmlResponse) {
            var options = Object.extend({
                evalScripts: true
            }, this.options.ajaxOptions);
            Object.extend(options, {
                parameters: params,
                onComplete: this._boundWrapperHandler,
                onFailure: this._boundFailureHandler
            });
            new Ajax.Updater({
                success: this.element
            }, this.url, options);
        } else {
            var options = Object.extend({
                method: 'get'
            }, this.options.ajaxOptions);
            Object.extend(options, {
                parameters: params,
                onComplete: this._boundWrapperHandler,
                onFailure: this._boundFailureHandler
            });
            new Ajax.Request(this.url, options);
        }
        if (e) Event.stop(e);
    },
    leaveEditMode: function() {
        this.element.removeClassName(this.options.savingClassName);
        this.removeForm();
        this.leaveHover();
        this.element.style.backgroundColor = this._originalBackground;
        this.element.show();
        if (this.options.externalControl) this.options.externalControl.show();
        this._saving = false;
        this._editing = false;
        this._oldInnerHTML = null;
        this.triggerCallback('onLeaveEditMode');
    },
    leaveHover: function(e) {
        if (this.options.hoverClassName) this.element.removeClassName(this.options.hoverClassName);
        if (this._saving) return;
        this.triggerCallback('onLeaveHover');
    },
    loadExternalText: function() {
        this._form.addClassName(this.options.loadingClassName);
        this._controls.editor.disabled = true;
        var options = Object.extend({
            method: 'get'
        }, this.options.ajaxOptions);
        Object.extend(options, {
            parameters: 'editorId=' + encodeURIComponent(this.element.id),
            onComplete: Prototype.emptyFunction,
            onSuccess: function(transport) {
                this._form.removeClassName(this.options.loadingClassName);
                var text = transport.responseText;
                if (this.options.stripLoadedTextTags) text = text.stripTags();
                this._controls.editor.value = text;
                this._controls.editor.disabled = false;
                this.postProcessEditField();
            }.bind(this),
            onFailure: this._boundFailureHandler
        });
        new Ajax.Request(this.options.loadTextURL, options);
    },
    postProcessEditField: function() {
        var fpc = this.options.fieldPostCreation;
        if (fpc) $(this._controls.editor)['focus' == fpc ? 'focus' : 'activate']();
    },
    prepareOptions: function() {
        this.options = Object.clone(Ajax.InPlaceEditor.DefaultOptions);
        Object.extend(this.options, Ajax.InPlaceEditor.DefaultCallbacks);
        [this._extraDefaultOptions].flatten().compact().each(function(defs) {
            Object.extend(this.options, defs);
        }.bind(this));
    },
    prepareSubmission: function() {
        this._saving = true;
        this.removeForm();
        this.leaveHover();
        this.showSaving();
    },
    registerListeners: function() {
        this._listeners = {};
        var listener;
        $H(Ajax.InPlaceEditor.Listeners).each(function(pair) {
            listener = this[pair.value].bind(this);
            this._listeners[pair.key] = listener;
            if (!this.options.externalControlOnly) this.element.observe(pair.key, listener);
            if (this.options.externalControl) this.options.externalControl.observe(pair.key, listener);
        }.bind(this));
    },
    removeForm: function() {
        if (!this._form) return;
        this._form.remove();
        this._form = null;
        this._controls = {};
    },
    showSaving: function() {
        this._oldInnerHTML = this.element.innerHTML;
        this.element.innerHTML = this.options.savingText;
        this.element.addClassName(this.options.savingClassName);
        this.element.style.backgroundColor = this._originalBackground;
        this.element.show();
    },
    triggerCallback: function(cbName, arg) {
        if ('function' == typeof this.options[cbName]) {
            this.options[cbName](this, arg);
        }
    },
    unregisterListeners: function() {
        $H(this._listeners).each(function(pair) {
            if (!this.options.externalControlOnly) this.element.stopObserving(pair.key, pair.value);
            if (this.options.externalControl) this.options.externalControl.stopObserving(pair.key, pair.value);
        }.bind(this));
    },
    wrapUp: function(transport) {
        this.leaveEditMode();
        // Can't use triggerCallback due to backward compatibility: requires
        // binding + direct element
        this._boundComplete(transport, this.element);
    }
});

Object.extend(Ajax.InPlaceEditor.prototype, {
    dispose: Ajax.InPlaceEditor.prototype.destroy
});

Ajax.InPlaceCollectionEditor = Class.create(Ajax.InPlaceEditor, {
    initialize: function($super, element, url, options) {
        this._extraDefaultOptions = Ajax.InPlaceCollectionEditor.DefaultOptions;
        $super(element, url, options);
    },

    createEditField: function() {
        var list = document.createElement('select');
        list.name = this.options.paramName;
        list.size = 1;
        this._controls.editor = list;
        this._collection = this.options.collection || [];
        if (this.options.loadCollectionURL) this.loadCollection();
        else
        this.checkForExternalText();
        this._form.appendChild(this._controls.editor);
    },

    loadCollection: function() {
        this._form.addClassName(this.options.loadingClassName);
        this.showLoadingText(this.options.loadingCollectionText);
        var options = Object.extend({
            method: 'get'
        }, this.options.ajaxOptions);
        Object.extend(options, {
            parameters: 'editorId=' + encodeURIComponent(this.element.id),
            onComplete: Prototype.emptyFunction,
            onSuccess: function(transport) {
                var js = transport.responseText.strip();
                if (!/^\[.*\]$/.test(js)) // TODO: improve sanity check
                throw ('Server returned an invalid collection representation.');
                this._collection = eval(js);
                this.checkForExternalText();
            }.bind(this),
            onFailure: this.onFailure
        });
        new Ajax.Request(this.options.loadCollectionURL, options);
    },

    showLoadingText: function(text) {
        this._controls.editor.disabled = true;
        var tempOption = this._controls.editor.firstChild;
        if (!tempOption) {
            tempOption = document.createElement('option');
            tempOption.value = '';
            this._controls.editor.appendChild(tempOption);
            tempOption.selected = true;
        }
        tempOption.update((text || '').stripScripts().stripTags());
    },

    checkForExternalText: function() {
        this._text = this.getText();
        if (this.options.loadTextURL) this.loadExternalText();
        else
        this.buildOptionList();
    },

    loadExternalText: function() {
        this.showLoadingText(this.options.loadingText);
        var options = Object.extend({
            method: 'get'
        }, this.options.ajaxOptions);
        Object.extend(options, {
            parameters: 'editorId=' + encodeURIComponent(this.element.id),
            onComplete: Prototype.emptyFunction,
            onSuccess: function(transport) {
                this._text = transport.responseText.strip();
                this.buildOptionList();
            }.bind(this),
            onFailure: this.onFailure
        });
        new Ajax.Request(this.options.loadTextURL, options);
    },

    buildOptionList: function() {
        this._form.removeClassName(this.options.loadingClassName);
        this._collection = this._collection.map(function(entry) {
            return 2 === entry.length ? entry : [entry, entry].flatten();
        });
        var marker = ('value' in this.options) ? this.options.value : this._text;
        var textFound = this._collection.any(function(entry) {
            return entry[0] == marker;
        }.bind(this));
        this._controls.editor.update('');
        var option;
        this._collection.each(function(entry, index) {
            option = document.createElement('option');
            option.value = entry[0];
            option.selected = textFound ? entry[0] == marker : 0 == index;
            option.appendChild(document.createTextNode(entry[1]));
            this._controls.editor.appendChild(option);
        }.bind(this));
        this._controls.editor.disabled = false;
        Field.scrollFreeActivate(this._controls.editor);
    }
});

//**** DEPRECATION LAYER FOR InPlace[Collection]Editor! ****
//**** This only  exists for a while,  in order to  let ****
//**** users adapt to  the new API.  Read up on the new ****
//**** API and convert your code to it ASAP!            ****
Ajax.InPlaceEditor.prototype.initialize.dealWithDeprecatedOptions = function(options) {
    if (!options) return;

    function fallback(name, expr) {
        if (name in options || expr === undefined) return;
        options[name] = expr;
    };
    fallback('cancelControl', (options.cancelLink ? 'link' : (options.cancelButton ? 'button' : options.cancelLink == options.cancelButton == false ? false : undefined)));
    fallback('okControl', (options.okLink ? 'link' : (options.okButton ? 'button' : options.okLink == options.okButton == false ? false : undefined)));
    fallback('highlightColor', options.highlightcolor);
    fallback('highlightEndColor', options.highlightendcolor);
};

Object.extend(Ajax.InPlaceEditor, {
    DefaultOptions: {
        ajaxOptions: {},
        autoRows: 3,
        // Use when multi-line w/ rows == 1
        cancelControl: 'link',
        // 'link'|'button'|false
        cancelText: 'cancel',
        clickToEditText: 'Click to edit',
        externalControl: null,
        // id|elt
        externalControlOnly: false,
        fieldPostCreation: 'activate',
        // 'activate'|'focus'|false
        formClassName: 'inplaceeditor-form',
        formId: null,
        // id|elt
        highlightColor: '#ffff99',
        highlightEndColor: '#ffffff',
        hoverClassName: '',
        htmlResponse: true,
        loadingClassName: 'inplaceeditor-loading',
        loadingText: 'Loading...',
        okControl: 'button',
        // 'link'|'button'|false
        okText: 'ok',
        paramName: 'value',
        rows: 1,
        // If 1 and multi-line, uses autoRows
        savingClassName: 'inplaceeditor-saving',
        savingText: 'Saving...',
        size: 0,
        stripLoadedTextTags: false,
        submitOnBlur: false,
        textAfterControls: '',
        textBeforeControls: '',
        textBetweenControls: ''
    },
    DefaultCallbacks: {
        callback: function(form) {
            return Form.serialize(form);
        },
        onComplete: function(transport, element) {
            // For backward compatibility, this one is bound to the IPE, and passes
            // the element directly.  It was too often customized, so we don't break it.
            new Effect.Highlight(element, {
                startcolor: this.options.highlightColor,
                keepBackgroundImage: true
            });
        },
        onEnterEditMode: null,
        onEnterHover: function(ipe) {
            ipe.element.style.backgroundColor = ipe.options.highlightColor;
            if (ipe._effect) ipe._effect.cancel();
        },
        onFailure: function(transport, ipe) {
            alert('Error communication with the server: ' + transport.responseText.stripTags());
        },
        onFormCustomization: null,
        // Takes the IPE and its generated form, after editor, before controls.
        onLeaveEditMode: null,
        onLeaveHover: function(ipe) {
            ipe._effect = new Effect.Highlight(ipe.element, {
                startcolor: ipe.options.highlightColor,
                endcolor: ipe.options.highlightEndColor,
                restorecolor: ipe._originalBackground,
                keepBackgroundImage: true
            });
        }
    },
    Listeners: {
        click: 'enterEditMode',
        keydown: 'checkForEscapeOrReturn',
        mouseover: 'enterHover',
        mouseout: 'leaveHover'
    }
});

Ajax.InPlaceCollectionEditor.DefaultOptions = {
    loadingCollectionText: 'Loading options...'
};

// Delayed observer, like Form.Element.Observer,
// but waits for delay after last key input
// Ideal for live-search fields
Form.Element.DelayedObserver = Class.create({
    initialize: function(element, delay, callback) {
        this.delay = delay || 0.5;
        this.element = $(element);
        this.callback = callback;
        this.timer = null;
        this.lastValue = $F(this.element);
        Event.observe(this.element, 'keyup', this.delayedListener.bindAsEventListener(this));
    },
    delayedListener: function(event) {
        if (this.lastValue == $F(this.element)) return;
        if (this.timer) clearTimeout(this.timer);
        this.timer = setTimeout(this.onTimerEvent.bind(this), this.delay * 1000);
        this.lastValue = $F(this.element);
    },
    onTimerEvent: function() {
        this.timer = null;
        this.callback(this.element, $F(this.element));
    }
}); // script.aculo.us slider.js v1.9.0, Thu Dec 23 16:54:48 -0500 2010
// Copyright (c) 2005-2010 Marty Haught, Thomas Fuchs
//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/
if (!Control) var Control = {};

// options:
//  axis: 'vertical', or 'horizontal' (default)
//
// callbacks:
//  onChange(value)
//  onSlide(value)
Control.Slider = Class.create({
    initialize: function(handle, track, options) {
        var slider = this;

        if (Object.isArray(handle)) {
            this.handles = handle.collect(function(e) {
                return $(e)
            });
        } else {
            this.handles = [$(handle)];
        }

        this.track = $(track);
        this.options = options || {};

        this.axis = this.options.axis || 'horizontal';
        this.increment = this.options.increment || 1;
        this.step = parseInt(this.options.step || '1');
        this.range = this.options.range || $R(0, 1);

        this.value = 0; // assure backwards compat
        this.values = this.handles.map(function() {
            return 0
        });
        this.spans = this.options.spans ? this.options.spans.map(function(s) {
            return $(s)
        }) : false;
        this.options.startSpan = $(this.options.startSpan || null);
        this.options.endSpan = $(this.options.endSpan || null);

        this.restricted = this.options.restricted || false;

        this.maximum = this.options.maximum || this.range.end;
        this.minimum = this.options.minimum || this.range.start;

        // Will be used to align the handle onto the track, if necessary
        this.alignX = parseInt(this.options.alignX || '0');
        this.alignY = parseInt(this.options.alignY || '0');

        this.trackLength = this.maximumOffset() - this.minimumOffset();

        this.handleLength = this.isVertical() ? (this.handles[0].offsetHeight != 0 ? this.handles[0].offsetHeight : this.handles[0].style.height.replace(/px$/, "")) : (this.handles[0].offsetWidth != 0 ? this.handles[0].offsetWidth : this.handles[0].style.width.replace(/px$/, ""));

        this.active = false;
        this.dragging = false;
        this.disabled = false;

        if (this.options.disabled) this.setDisabled();

        // Allowed values array
        this.allowedValues = this.options.values ? this.options.values.sortBy(Prototype.K) : false;
        if (this.allowedValues) {
            this.minimum = this.allowedValues.min();
            this.maximum = this.allowedValues.max();
        }

        this.eventMouseDown = this.startDrag.bindAsEventListener(this);
        this.eventMouseUp = this.endDrag.bindAsEventListener(this);
        this.eventMouseMove = this.update.bindAsEventListener(this);

        // Initialize handles in reverse (make sure first handle is active)
        this.handles.each(function(h, i) {
            i = slider.handles.length - 1 - i;
            slider.setValue(parseFloat((Object.isArray(slider.options.sliderValue) ? slider.options.sliderValue[i] : slider.options.sliderValue) || slider.range.start), i);
            h.makePositioned().observe("mousedown", slider.eventMouseDown);
        });

        this.track.observe("mousedown", this.eventMouseDown);
        document.observe("mouseup", this.eventMouseUp);
        document.observe("mousemove", this.eventMouseMove);

        this.initialized = true;
    },
    dispose: function() {
        var slider = this;
        Event.stopObserving(this.track, "mousedown", this.eventMouseDown);
        Event.stopObserving(document, "mouseup", this.eventMouseUp);
        Event.stopObserving(document, "mousemove", this.eventMouseMove);
        this.handles.each(function(h) {
            Event.stopObserving(h, "mousedown", slider.eventMouseDown);
        });
    },
    setDisabled: function() {
        this.disabled = true;
    },
    setEnabled: function() {
        this.disabled = false;
    },
    getNearestValue: function(value) {
        if (this.allowedValues) {
            if (value >= this.allowedValues.max()) return (this.allowedValues.max());
            if (value <= this.allowedValues.min()) return (this.allowedValues.min());

            var offset = Math.abs(this.allowedValues[0] - value);
            var newValue = this.allowedValues[0];
            this.allowedValues.each(function(v) {
                var currentOffset = Math.abs(v - value);
                if (currentOffset <= offset) {
                    newValue = v;
                    offset = currentOffset;
                }
            });
            return newValue;
        }
        if (value > this.range.end) return this.range.end;
        if (value < this.range.start) return this.range.start;
        return value;
    },
    setValue: function(sliderValue, handleIdx) {
        if (!this.active) {
            this.activeHandleIdx = handleIdx || 0;
            this.activeHandle = this.handles[this.activeHandleIdx];
            this.updateStyles();
        }
        handleIdx = handleIdx || this.activeHandleIdx || 0;
        if (this.initialized && this.restricted) {
            if ((handleIdx > 0) && (sliderValue < this.values[handleIdx - 1])) sliderValue = this.values[handleIdx - 1];
            if ((handleIdx < (this.handles.length - 1)) && (sliderValue > this.values[handleIdx + 1])) sliderValue = this.values[handleIdx + 1];
        }
        sliderValue = this.getNearestValue(sliderValue);
        this.values[handleIdx] = sliderValue;
        this.value = this.values[0]; // assure backwards compat
        this.handles[handleIdx].style[this.isVertical() ? 'top' : 'left'] =
        this.translateToPx(sliderValue);

        this.drawSpans();
        if (!this.dragging || !this.event) this.updateFinished();
    },
    setValueBy: function(delta, handleIdx) {
        this.setValue(this.values[handleIdx || this.activeHandleIdx || 0] + delta, handleIdx || this.activeHandleIdx || 0);
    },
    translateToPx: function(value) {
        return Math.round(((this.trackLength - this.handleLength) / (this.range.end - this.range.start)) * (value - this.range.start)) + "px";
    },
    translateToValue: function(offset) {
        return ((offset / (this.trackLength - this.handleLength) * (this.range.end - this.range.start)) + this.range.start);
    },
    getRange: function(range) {
        var v = this.values.sortBy(Prototype.K);
        range = range || 0;
        return $R(v[range], v[range + 1]);
    },
    minimumOffset: function() {
        return (this.isVertical() ? this.alignY : this.alignX);
    },
    maximumOffset: function() {
        return (this.isVertical() ? (this.track.offsetHeight != 0 ? this.track.offsetHeight : this.track.style.height.replace(/px$/, "")) - this.alignY : (this.track.offsetWidth != 0 ? this.track.offsetWidth : this.track.style.width.replace(/px$/, "")) - this.alignX);
    },
    isVertical: function() {
        return (this.axis == 'vertical');
    },
    drawSpans: function() {
        var slider = this;
        if (this.spans) $R(0, this.spans.length - 1).each(function(r) {
            slider.setSpan(slider.spans[r], slider.getRange(r))
        });
        if (this.options.startSpan) this.setSpan(this.options.startSpan, $R(0, this.values.length > 1 ? this.getRange(0).min() : this.value));
        if (this.options.endSpan) this.setSpan(this.options.endSpan, $R(this.values.length > 1 ? this.getRange(this.spans.length - 1).max() : this.value, this.maximum));
    },
    setSpan: function(span, range) {
        if (this.isVertical()) {
            span.style.top = this.translateToPx(range.start);
            span.style.height = this.translateToPx(range.end - range.start + this.range.start);
        } else {
            span.style.left = this.translateToPx(range.start);
            span.style.width = this.translateToPx(range.end - range.start + this.range.start);
        }
    },
    updateStyles: function() {
        this.handles.each(function(h) {
            Element.removeClassName(h, 'selected')
        });
        Element.addClassName(this.activeHandle, 'selected');
    },
    startDrag: function(event) {
        if (Event.isLeftClick(event)) {
            if (!this.disabled) {
                this.active = true;

                var handle = Event.element(event);
                var pointer = [Event.pointerX(event), Event.pointerY(event)];
                var track = handle;
                if (track == this.track) {
                    var offsets = this.track.cumulativeOffset();
                    this.event = event;
                    this.setValue(this.translateToValue((this.isVertical() ? pointer[1] - offsets[1] : pointer[0] - offsets[0]) - (this.handleLength / 2)));
                    var offsets = this.activeHandle.cumulativeOffset();
                    this.offsetX = (pointer[0] - offsets[0]);
                    this.offsetY = (pointer[1] - offsets[1]);
                } else {
                    // find the handle (prevents issues with Safari)
                    while ((this.handles.indexOf(handle) == -1) && handle.parentNode)
                    handle = handle.parentNode;

                    if (this.handles.indexOf(handle) != -1) {
                        this.activeHandle = handle;
                        this.activeHandleIdx = this.handles.indexOf(this.activeHandle);
                        this.updateStyles();

                        var offsets = this.activeHandle.cumulativeOffset();
                        this.offsetX = (pointer[0] - offsets[0]);
                        this.offsetY = (pointer[1] - offsets[1]);
                    }
                }
            }
            Event.stop(event);
        }
    },
    update: function(event) {
        if (this.active) {
            if (!this.dragging) this.dragging = true;
            this.draw(event);
            if (Prototype.Browser.WebKit) window.scrollBy(0, 0);
            Event.stop(event);
        }
    },
    draw: function(event) {
        var pointer = [Event.pointerX(event), Event.pointerY(event)];
        var offsets = this.track.cumulativeOffset();
        pointer[0] -= this.offsetX + offsets[0];
        pointer[1] -= this.offsetY + offsets[1];
        this.event = event;
        this.setValue(this.translateToValue(this.isVertical() ? pointer[1] : pointer[0]));
        if (this.initialized && this.options.onSlide) this.options.onSlide(this.values.length > 1 ? this.values : this.value, this);
    },
    endDrag: function(event) {
        if (this.active && this.dragging) {
            this.finishDrag(event, true);
            Event.stop(event);
        }
        this.active = false;
        this.dragging = false;
    },
    finishDrag: function(event, success) {
        this.active = false;
        this.dragging = false;
        this.updateFinished();
    },
    updateFinished: function() {
        if (this.initialized && this.options.onChange) this.options.onChange(this.values.length > 1 ? this.values : this.value, this);
        this.event = null;
    }
}); // script.aculo.us sound.js v1.9.0, Thu Dec 23 16:54:48 -0500 2010
// Copyright (c) 2005-2010 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//
// Based on code created by Jules Gravinese (http://www.webveteran.com/)
//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/
Sound = {
    tracks: {},
    _enabled: true,
    template: new Template('<embed style="height:0" id="sound_#{track}_#{id}" src="#{url}" loop="false" autostart="true" hidden="true"/>'),
    enable: function() {
        Sound._enabled = true;
    },
    disable: function() {
        Sound._enabled = false;
    },
    play: function(url) {
        if (!Sound._enabled) return;
        var options = Object.extend({
            track: 'global',
            url: url,
            replace: false
        }, arguments[1] || {});

        if (options.replace && this.tracks[options.track]) {
            $R(0, this.tracks[options.track].id).each(function(id) {
                var sound = $('sound_' + options.track + '_' + id);
                sound.Stop && sound.Stop();
                sound.remove();
            });
            this.tracks[options.track] = null;
        }

        if (!this.tracks[options.track]) this.tracks[options.track] = {
            id: 0
        };
        else
        this.tracks[options.track].id++;

        options.id = this.tracks[options.track].id;
        $$('body')[0].insert(
        Prototype.Browser.IE ? new Element('bgsound', {
            id: 'sound_' + options.track + '_' + options.id,
            src: options.url,
            loop: 1,
            autostart: true
        }) : Sound.template.evaluate(options));
    }
};

if (Prototype.Browser.Gecko && navigator.userAgent.indexOf("Win") > 0) {
    if (navigator.plugins && $A(navigator.plugins).detect(function(p) {
        return p.name.indexOf('QuickTime') != -1
    })) Sound.template = new Template('<object id="sound_#{track}_#{id}" width="0" height="0" type="audio/mpeg" data="#{url}"/>');
    else if (navigator.plugins && $A(navigator.plugins).detect(function(p) {
        return p.name.indexOf('Windows Media') != -1
    })) Sound.template = new Template('<object id="sound_#{track}_#{id}" type="application/x-mplayer2" data="#{url}"></object>');
    else if (navigator.plugins && $A(navigator.plugins).detect(function(p) {
        return p.name.indexOf('RealPlayer') != -1
    })) Sound.template = new Template('<embed type="audio/x-pn-realaudio-plugin" style="height:0" id="sound_#{track}_#{id}" src="#{url}" loop="false" autostart="true" hidden="true"/>');
    else
    Sound.play = function() {};
}