/*  Prototype JavaScript framework, version 1.6.1
*  (c) 2005-2009 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: '1.6.1',

    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.*Safari/.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');
            var form = document.createElement('form');
            var 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;


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;
    }
};

/* Based on Alex Arnell's inheritance implementation. */

var Class = (function() {
    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; i < properties.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;
        var properties = Object.keys(source);

        if (!Object.keys({ toString: true }).length) {
            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().first() == "$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;

    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(object) {
        var type = typeof object;
        switch (type) {
            case 'undefined':
            case 'function':
            case 'unknown': return;
            case 'boolean': return object.toString();
        }

        if (object === null) return 'null';
        if (object.toJSON) return object.toJSON();
        if (isElement(object)) return;

        var results = [];
        for (var property in object) {
            var value = toJSON(object[property]);
            if (!isUndefined(value))
                results.push(property.toJSON() + ': ' + value);
        }

        return '{' + results.join(', ') + '}';
    }

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

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

    function keys(object) {
        var results = [];
        for (var property in object)
            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) == "[object Array]";
    }


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

    function isFunction(object) {
        return typeof object === "function";
    }

    function isString(object) {
        return _toString.call(object) == "[object String]";
    }

    function isNumber(object) {
        return _toString.call(object) == "[object Number]";
    }

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

    extend(Object, {
        extend: extend,
        inspect: inspect,
        toJSON: toJSON,
        toQueryString: toQueryString,
        toHTML: toHTML,
        keys: keys,
        values: values,
        clone: clone,
        isElement: isElement,
        isArray: isArray,
        isHash: isHash,
        isFunction: isFunction,
        isString: isString,
        isNumber: isNumber,
        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
    }
})());


Date.prototype.toJSON = function() {
    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"';
};


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() {

    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');
        var 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());
                var 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() {
        var parts = this.split('-'), len = parts.length;
        if (len == 1) return parts[0];

        var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

        for (var i = 1; i < len; i++)
            camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

        return camelized;
    }

    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 toJSON() {
        return this.inspect(true);
    }

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

    function isJSON() {
        var str = this;
        if (str.blank()) return false;
        str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
        return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
    }

    function evalJSON(sanitize) {
        var json = this.unfilterJSON();
        try {
            if (!sanitize || json.isJSON()) return eval('(' + json + ')');
        } catch (e) { }
        throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
    }

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

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

    function endsWith(pattern) {
        var d = this.length - pattern.length;
        return d >= 0 && this.lastIndexOf(pattern) === 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 ? 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,
        toJSON: toJSON,
        unfilterJSON: unfilterJSON,
        isJSON: isJSON,
        evalJSON: 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];
            var 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) {
        for (var i = 0, length = this.length; i < length; i++)
            iterator(this[i]);
    }
    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 : this.toArray())._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 toJSON() {
        var results = [];
        this.each(function(object) {
            var value = Object.toJSON(object);
            if (!Object.isUndefined(value)) results.push(value);
        });
        return '[' + results.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,
        toJSON: toJSON
    });

    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))
                    return results.concat(values.map(toQueryPair.curry(key)));
            } 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 toJSON() {
        return Object.toJSON(this.toObject());
    }

    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: toJSON,
        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 toJSON() {
        return isFinite(this) ? this.toString() : 'null';
    }

    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,
        toJSON: toJSON,
        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 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.isString(this.options.parameters))
            this.options.parameters = this.options.parameters.toQueryParams();
        else 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.clone(this.options.parameters);

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

        this.parameters = params;

        if (params = Object.toQueryString(params)) {
            if (this.method == 'get')
                this.url += (this.url.include('?') ? '&' : '?') + params;
            else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
                params += '&_=';
        }

        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);
    },

    getStatus: function() {
        try {
            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 (!window.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) {

    var SETATTRIBUTE_IGNORES_NAME = (function() {
        var elForm = document.createElement("form");
        var elInput = document.createElement("input");
        var root = document.documentElement;
        elInput.setAttribute("name", "test");
        elForm.appendChild(elInput);
        root.appendChild(elForm);
        var isBuggy = elForm.elements
      ? (typeof elForm.elements.test == "undefined")
      : null;
        root.removeChild(elForm);
        elForm = elInput = null;
        return isBuggy;
    })();

    var element = global.Element;
    global.Element = function(tagName, attributes) {
        attributes = attributes || {};
        tagName = tagName.toLowerCase();
        var cache = Element.cache;
        if (SETATTRIBUTE_IGNORES_NAME && 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));
        return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
    };
    Object.extend(global.Element, element || {});
    if (element) global.Element.prototype = element.prototype;
})(this);

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

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 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);

            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 (SELECT_ELEMENT_INNERHTML_BUGGY || TABLE_ELEMENT_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 {
                    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();
            var value = (element[property] || '').toString();
            if (value) result += ' ' + attribute + '=' + value.inspect(true);
        });
        return result + '>';
    },

    recursivelyCollect: function(element, property) {
        element = $(element);
        var elements = [];
        while (element = element[property])
            if (element.nodeType == 1)
            elements.push(Element.extend(element));
        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) {
        if (!(element = $(element).firstChild)) return [];
        while (element && element.nodeType != 1) element = element.nextSibling;
        if (element) return [element].concat($(element).nextSiblings());
        return [];
    },

    previousSiblings: function(element) {
        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) {
        if (Object.isString(selector))
            selector = new Selector(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] :
      Selector.findElement(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 (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
        var previousSiblings = Element.previousSiblings(element);
        return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
    },

    next: function(element, expression, index) {
        element = $(element);
        if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
        var nextSiblings = Element.nextSiblings(element);
        return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
    },


    select: function(element) {
        var args = Array.prototype.slice.call(arguments, 1);
        return Selector.findChildElements(element, args);
    },

    adjacent: function(element) {
        var args = Array.prototype.slice.call(arguments, 1);
        return Selector.findChildElements(element.parentNode, args).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;
    },

    getDimensions: function(element) {
        element = $(element);
        var display = Element.getStyle(element, 'display');
        if (display != 'none' && display != null) // Safari bug
            return { width: element.offsetWidth, height: element.offsetHeight };

        var els = element.style;
        var originalVisibility = els.visibility;
        var originalPosition = els.position;
        var originalDisplay = els.display;
        els.visibility = 'hidden';
        if (originalPosition != 'fixed') // Switching fixed to absolute causes issues in Safari
            els.position = 'absolute';
        els.display = 'block';
        var originalWidth = element.clientWidth;
        var originalHeight = element.clientHeight;
        els.display = originalDisplay;
        els.position = originalPosition;
        els.visibility = originalVisibility;
        return { width: originalWidth, height: originalHeight };
    },

    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;
    },

    cumulativeOffset: function(element) {
        var valueT = 0, valueL = 0;
        do {
            valueT += element.offsetTop || 0;
            valueL += element.offsetLeft || 0;
            element = element.offsetParent;
        } while (element);
        return Element._returnOffset(valueL, valueT);
    },

    positionedOffset: function(element) {
        var valueT = 0, valueL = 0;
        do {
            valueT += element.offsetTop || 0;
            valueL += element.offsetLeft || 0;
            element = element.offsetParent;
            if (element) {
                if (element.tagName.toUpperCase() == 'BODY') break;
                var p = Element.getStyle(element, 'position');
                if (p !== 'static') break;
            }
        } while (element);
        return Element._returnOffset(valueL, valueT);
    },

    absolutize: function(element) {
        element = $(element);
        if (Element.getStyle(element, 'position') == 'absolute') return element;

        var offsets = Element.positionedOffset(element);
        var top = offsets[1];
        var left = offsets[0];
        var width = element.clientWidth;
        var height = element.clientHeight;

        element._originalLeft = left - parseFloat(element.style.left || 0);
        element._originalTop = top - parseFloat(element.style.top || 0);
        element._originalWidth = element.style.width;
        element._originalHeight = element.style.height;

        element.style.position = 'absolute';
        element.style.top = top + 'px';
        element.style.left = left + 'px';
        element.style.width = width + 'px';
        element.style.height = height + 'px';
        return element;
    },

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

        element.style.position = 'relative';
        var top = parseFloat(element.style.top || 0) - (element._originalTop || 0);
        var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

        element.style.top = top + 'px';
        element.style.left = left + 'px';
        element.style.height = element._originalHeight;
        element.style.width = element._originalWidth;
        return element;
    },

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

    getOffsetParent: function(element) {
        if (element.offsetParent) return $(element.offsetParent);
        if (element == document.body) return $(element);

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

        return $(document.body);
    },

    viewportOffset: function(forElement) {
        var valueT = 0, valueL = 0;

        var element = forElement;
        do {
            valueT += element.offsetTop || 0;
            valueL += element.offsetLeft || 0;

            if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

        } while (element = element.offsetParent);

        element = forElement;
        do {
            if (!Prototype.Browser.Opera || (element.tagName && (element.tagName.toUpperCase() == 'BODY'))) {
                valueT -= element.scrollTop || 0;
                valueL -= element.scrollLeft || 0;
            }
        } while (element = element.parentNode);

        return Element._returnOffset(valueL, valueT);
    },

    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);

        element = $(element);
        var delta = [0, 0];
        var parent = null;
        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 'left': case 'top': case 'right': case 'bottom':
                if (proceed(element, 'position') === 'static') return null;
            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.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
        element = $(element);
        try { element.offsetParent }
        catch (e) { 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;
    }
  );

    $w('positionedOffset viewportOffset').each(function(method) {
        Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
          element = $(element);
          try { element.offsetParent }
          catch (e) { return Element._returnOffset(0, 0) }
          var position = element.getStyle('position');
          if (position !== 'static') return proceed(element);
          var offsetParent = element.getOffsetParent();
          if (offsetParent && offsetParent.getStyle('position') === 'fixed')
              offsetParent.setStyle({ zoom: 1 });
          element.setStyle({ position: 'relative' });
          var value = proceed(element);
          element.setStyle({ position: position });
          return value;
      }
    );
    });

    Element.Methods.cumulativeOffset = Element.Methods.cumulativeOffset.wrap(
    function(proceed, element) {
        try { element.offsetParent }
        catch (e) { return Element._returnOffset(0, 0) }
        return proceed(element);
    }
  );

    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';
        var forProp = 'for';

        var 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');
                        el.onclick = Prototype.emptyFunction;
                        var value = el.getAttribute('onclick');
                        var f;

                        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;
    };

    Element.Methods.cumulativeOffset = function(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 Element._returnOffset(valueL, valueT);
    };
}

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();
            var 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) {
    var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
    if (t) {
        div.innerHTML = t[0] + html + t[1];
        t[2].times(function() { 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);
                var 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;
})();

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

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)
        });
    }

    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);
        var 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[0];
        }

        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);
    }
});
/* Portions of the Selector class are derived from Jack Slocum's DomQuery,
* part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
* license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
    initialize: function(expression) {
        this.expression = expression.strip();

        if (this.shouldUseSelectorsAPI()) {
            this.mode = 'selectorsAPI';
        } else if (this.shouldUseXPath()) {
            this.mode = 'xpath';
            this.compileXPathMatcher();
        } else {
            this.mode = "normal";
            this.compileMatcher();
        }

    },

    shouldUseXPath: (function() {

        var IS_DESCENDANT_SELECTOR_BUGGY = (function() {
            var isBuggy = false;
            if (document.evaluate && window.XPathResult) {
                var el = document.createElement('div');
                el.innerHTML = '<ul><li></li></ul><div><ul><li></li></ul></div>';

                var xpath = ".//*[local-name()='ul' or local-name()='UL']" +
          "//*[local-name()='li' or local-name()='LI']";

                var result = document.evaluate(xpath, el, null,
          XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);

                isBuggy = (result.snapshotLength !== 2);
                el = null;
            }
            return isBuggy;
        })();

        return function() {
            if (!Prototype.BrowserFeatures.XPath) return false;

            var e = this.expression;

            if (Prototype.Browser.WebKit &&
       (e.include("-of-type") || e.include(":empty")))
                return false;

            if ((/(\[[\w-]*?:|:checked)/).test(e))
                return false;

            if (IS_DESCENDANT_SELECTOR_BUGGY) return false;

            return true;
        }

    })(),

    shouldUseSelectorsAPI: function() {
        if (!Prototype.BrowserFeatures.SelectorsAPI) return false;

        if (Selector.CASE_INSENSITIVE_CLASS_NAMES) return false;

        if (!Selector._div) Selector._div = new Element('div');

        try {
            Selector._div.querySelector(this.expression);
        } catch (e) {
            return false;
        }

        return true;
    },

    compileMatcher: function() {
        var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m, len = ps.length, name;

        if (Selector._cache[e]) {
            this.matcher = Selector._cache[e];
            return;
        }

        this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

        while (e && le != e && (/\S/).test(e)) {
            le = e;
            for (var i = 0; i < len; i++) {
                p = ps[i].re;
                name = ps[i].name;
                if (m = e.match(p)) {
                    this.matcher.push(Object.isFunction(c[name]) ? c[name](m) :
            new Template(c[name]).evaluate(m));
                    e = e.replace(m[0], '');
                    break;
                }
            }
        }

        this.matcher.push("return h.unique(n);\n}");
        eval(this.matcher.join('\n'));
        Selector._cache[this.expression] = this.matcher;
    },

    compileXPathMatcher: function() {
        var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m, len = ps.length, name;

        if (Selector._cache[e]) {
            this.xpath = Selector._cache[e]; return;
        }

        this.matcher = ['.//*'];
        while (e && le != e && (/\S/).test(e)) {
            le = e;
            for (var i = 0; i < len; i++) {
                name = ps[i].name;
                if (m = e.match(ps[i].re)) {
                    this.matcher.push(Object.isFunction(x[name]) ? x[name](m) :
            new Template(x[name]).evaluate(m));
                    e = e.replace(m[0], '');
                    break;
                }
            }
        }

        this.xpath = this.matcher.join('');
        Selector._cache[this.expression] = this.xpath;
    },

    findElements: function(root) {
        root = root || document;
        var e = this.expression, results;

        switch (this.mode) {
            case 'selectorsAPI':
                if (root !== document) {
                    var oldId = root.id, id = $(root).identify();
                    id = id.replace(/([\.:])/g, "\\$1");
                    e = "#" + id + " " + e;
                }

                results = $A(root.querySelectorAll(e)).map(Element.extend);
                root.id = oldId;

                return results;
            case 'xpath':
                return document._getElementsByXPath(this.xpath, root);
            default:
                return this.matcher(root);
        }
    },

    match: function(element) {
        this.tokens = [];

        var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
        var le, p, m, len = ps.length, name;

        while (e && le !== e && (/\S/).test(e)) {
            le = e;
            for (var i = 0; i < len; i++) {
                p = ps[i].re;
                name = ps[i].name;
                if (m = e.match(p)) {
                    if (as[name]) {
                        this.tokens.push([name, Object.clone(m)]);
                        e = e.replace(m[0], '');
                    } else {
                        return this.findElements(document).include(element);
                    }
                }
            }
        }

        var match = true, name, matches;
        for (var i = 0, token; token = this.tokens[i]; i++) {
            name = token[0], matches = token[1];
            if (!Selector.assertions[name](element, matches)) {
                match = false; break;
            }
        }

        return match;
    },

    toString: function() {
        return this.expression;
    },

    inspect: function() {
        return "#<Selector:" + this.expression.inspect() + ">";
    }
});

if (Prototype.BrowserFeatures.SelectorsAPI &&
 document.compatMode === 'BackCompat') {
    Selector.CASE_INSENSITIVE_CLASS_NAMES = (function() {
        var div = document.createElement('div'),
     span = document.createElement('span');

        div.id = "prototype_test_id";
        span.className = 'Test';
        div.appendChild(span);
        var isIgnored = (div.querySelector('#prototype_test_id .test') !== null);
        div = span = null;
        return isIgnored;
    })();
}

Object.extend(Selector, {
    _cache: {},

    xpath: {
        descendant: "//*",
        child: "/*",
        adjacent: "/following-sibling::*[1]",
        laterSibling: '/following-sibling::*',
        tagName: function(m) {
            if (m[1] == '*') return '';
            return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
        },
        className: "[contains(concat(' ', @class, ' '), ' #{1} ')]",
        id: "[@id='#{1}']",
        attrPresence: function(m) {
            m[1] = m[1].toLowerCase();
            return new Template("[@#{1}]").evaluate(m);
        },
        attr: function(m) {
            m[1] = m[1].toLowerCase();
            m[3] = m[5] || m[6];
            return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
        },
        pseudo: function(m) {
            var h = Selector.xpath.pseudos[m[1]];
            if (!h) return '';
            if (Object.isFunction(h)) return h(m);
            return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
        },
        operators: {
            '=': "[@#{1}='#{3}']",
            '!=': "[@#{1}!='#{3}']",
            '^=': "[starts-with(@#{1}, '#{3}')]",
            '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
            '*=': "[contains(@#{1}, '#{3}')]",
            '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
            '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
        },
        pseudos: {
            'first-child': '[not(preceding-sibling::*)]',
            'last-child': '[not(following-sibling::*)]',
            'only-child': '[not(preceding-sibling::* or following-sibling::*)]',
            'empty': "[count(*) = 0 and (count(text()) = 0)]",
            'checked': "[@checked]",
            'disabled': "[(@disabled) and (@type!='hidden')]",
            'enabled': "[not(@disabled) and (@type!='hidden')]",
            'not': function(m) {
                var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v, len = p.length, name;

                var exclusion = [];
                while (e && le != e && (/\S/).test(e)) {
                    le = e;
                    for (var i = 0; i < len; i++) {
                        name = p[i].name
                        if (m = e.match(p[i].re)) {
                            v = Object.isFunction(x[name]) ? x[name](m) : new Template(x[name]).evaluate(m);
                            exclusion.push("(" + v.substring(1, v.length - 1) + ")");
                            e = e.replace(m[0], '');
                            break;
                        }
                    }
                }
                return "[not(" + exclusion.join(" and ") + ")]";
            },
            'nth-child': function(m) {
                return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
            },
            'nth-last-child': function(m) {
                return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
            },
            'nth-of-type': function(m) {
                return Selector.xpath.pseudos.nth("position() ", m);
            },
            'nth-last-of-type': function(m) {
                return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
            },
            'first-of-type': function(m) {
                m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
            },
            'last-of-type': function(m) {
                m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
            },
            'only-of-type': function(m) {
                var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
            },
            nth: function(fragment, m) {
                var mm, formula = m[6], predicate;
                if (formula == 'even') formula = '2n+0';
                if (formula == 'odd') formula = '2n+1';
                if (mm = formula.match(/^(\d+)$/)) // digit only
                    return '[' + fragment + "= " + mm[1] + ']';
                if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
                    if (mm[1] == "-") mm[1] = -1;
                    var a = mm[1] ? Number(mm[1]) : 1;
                    var b = mm[2] ? Number(mm[2]) : 0;
                    predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
                    return new Template(predicate).evaluate({
                        fragment: fragment, a: a, b: b
                    });
                }
            }
        }
    },

    criteria: {
        tagName: 'n = h.tagName(n, r, "#{1}", c);      c = false;',
        className: 'n = h.className(n, r, "#{1}", c);    c = false;',
        id: 'n = h.id(n, r, "#{1}", c);           c = false;',
        attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
        attr: function(m) {
            m[3] = (m[5] || m[6]);
            return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
        },
        pseudo: function(m) {
            if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
            return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
        },
        descendant: 'c = "descendant";',
        child: 'c = "child";',
        adjacent: 'c = "adjacent";',
        laterSibling: 'c = "laterSibling";'
    },

    patterns: [
    { name: 'laterSibling', re: /^\s*~\s*/ },
    { name: 'child', re: /^\s*>\s*/ },
    { name: 'adjacent', re: /^\s*\+\s*/ },
    { name: 'descendant', re: /^\s/ },

    { name: 'tagName', re: /^\s*(\*|[\w\-]+)(\b|$)?/ },
    { name: 'id', re: /^#([\w\-\*]+)(\b|$)/ },
    { name: 'className', re: /^\.([\w\-\*]+)(\b|$)/ },
    { name: 'pseudo', re: /^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/ },
    { name: 'attrPresence', re: /^\[((?:[\w-]+:)?[\w-]+)\]/ },
    { name: 'attr', re: /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/ }
  ],

    assertions: {
        tagName: function(element, matches) {
            return matches[1].toUpperCase() == element.tagName.toUpperCase();
        },

        className: function(element, matches) {
            return Element.hasClassName(element, matches[1]);
        },

        id: function(element, matches) {
            return element.id === matches[1];
        },

        attrPresence: function(element, matches) {
            return Element.hasAttribute(element, matches[1]);
        },

        attr: function(element, matches) {
            var nodeValue = Element.readAttribute(element, matches[1]);
            return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
        }
    },

    handlers: {
        concat: function(a, b) {
            for (var i = 0, node; node = b[i]; i++)
                a.push(node);
            return a;
        },

        mark: function(nodes) {
            var _true = Prototype.emptyFunction;
            for (var i = 0, node; node = nodes[i]; i++)
                node._countedByPrototype = _true;
            return nodes;
        },

        unmark: (function() {

            var PROPERTIES_ATTRIBUTES_MAP = (function() {
                var el = document.createElement('div'),
            isBuggy = false,
            propName = '_countedByPrototype',
            value = 'x'
                el[propName] = value;
                isBuggy = (el.getAttribute(propName) === value);
                el = null;
                return isBuggy;
            })();

            return PROPERTIES_ATTRIBUTES_MAP ?
        function(nodes) {
            for (var i = 0, node; node = nodes[i]; i++)
                node.removeAttribute('_countedByPrototype');
            return nodes;
        } :
        function(nodes) {
            for (var i = 0, node; node = nodes[i]; i++)
                node._countedByPrototype = void 0;
            return nodes;
        }
        })(),

        index: function(parentNode, reverse, ofType) {
            parentNode._countedByPrototype = Prototype.emptyFunction;
            if (reverse) {
                for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
                    var node = nodes[i];
                    if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
                }
            } else {
                for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
                    if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
            }
        },

        unique: function(nodes) {
            if (nodes.length == 0) return nodes;
            var results = [], n;
            for (var i = 0, l = nodes.length; i < l; i++)
                if (typeof (n = nodes[i])._countedByPrototype == 'undefined') {
                n._countedByPrototype = Prototype.emptyFunction;
                results.push(Element.extend(n));
            }
            return Selector.handlers.unmark(results);
        },

        descendant: function(nodes) {
            var h = Selector.handlers;
            for (var i = 0, results = [], node; node = nodes[i]; i++)
                h.concat(results, node.getElementsByTagName('*'));
            return results;
        },

        child: function(nodes) {
            var h = Selector.handlers;
            for (var i = 0, results = [], node; node = nodes[i]; i++) {
                for (var j = 0, child; child = node.childNodes[j]; j++)
                    if (child.nodeType == 1 && child.tagName != '!') results.push(child);
            }
            return results;
        },

        adjacent: function(nodes) {
            for (var i = 0, results = [], node; node = nodes[i]; i++) {
                var next = this.nextElementSibling(node);
                if (next) results.push(next);
            }
            return results;
        },

        laterSibling: function(nodes) {
            var h = Selector.handlers;
            for (var i = 0, results = [], node; node = nodes[i]; i++)
                h.concat(results, Element.nextSiblings(node));
            return results;
        },

        nextElementSibling: function(node) {
            while (node = node.nextSibling)
                if (node.nodeType == 1) return node;
            return null;
        },

        previousElementSibling: function(node) {
            while (node = node.previousSibling)
                if (node.nodeType == 1) return node;
            return null;
        },

        tagName: function(nodes, root, tagName, combinator) {
            var uTagName = tagName.toUpperCase();
            var results = [], h = Selector.handlers;
            if (nodes) {
                if (combinator) {
                    if (combinator == "descendant") {
                        for (var i = 0, node; node = nodes[i]; i++)
                            h.concat(results, node.getElementsByTagName(tagName));
                        return results;
                    } else nodes = this[combinator](nodes);
                    if (tagName == "*") return nodes;
                }
                for (var i = 0, node; node = nodes[i]; i++)
                    if (node.tagName.toUpperCase() === uTagName) results.push(node);
                return results;
            } else return root.getElementsByTagName(tagName);
        },

        id: function(nodes, root, id, combinator) {
            var targetNode = $(id), h = Selector.handlers;

            if (root == document) {
                if (!targetNode) return [];
                if (!nodes) return [targetNode];
            } else {
                if (!root.sourceIndex || root.sourceIndex < 1) {
                    var nodes = root.getElementsByTagName('*');
                    for (var j = 0, node; node = nodes[j]; j++) {
                        if (node.id === id) return [node];
                    }
                }
            }

            if (nodes) {
                if (combinator) {
                    if (combinator == 'child') {
                        for (var i = 0, node; node = nodes[i]; i++)
                            if (targetNode.parentNode == node) return [targetNode];
                    } else if (combinator == 'descendant') {
                        for (var i = 0, node; node = nodes[i]; i++)
                            if (Element.descendantOf(targetNode, node)) return [targetNode];
                    } else if (combinator == 'adjacent') {
                        for (var i = 0, node; node = nodes[i]; i++)
                            if (Selector.handlers.previousElementSibling(targetNode) == node)
                            return [targetNode];
                    } else nodes = h[combinator](nodes);
                }
                for (var i = 0, node; node = nodes[i]; i++)
                    if (node == targetNode) return [targetNode];
                return [];
            }
            return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
        },

        className: function(nodes, root, className, combinator) {
            if (nodes && combinator) nodes = this[combinator](nodes);
            return Selector.handlers.byClassName(nodes, root, className);
        },

        byClassName: function(nodes, root, className) {
            if (!nodes) nodes = Selector.handlers.descendant([root]);
            var needle = ' ' + className + ' ';
            for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
                nodeClassName = node.className;
                if (nodeClassName.length == 0) continue;
                if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
                    results.push(node);
            }
            return results;
        },

        attrPresence: function(nodes, root, attr, combinator) {
            if (!nodes) nodes = root.getElementsByTagName("*");
            if (nodes && combinator) nodes = this[combinator](nodes);
            var results = [];
            for (var i = 0, node; node = nodes[i]; i++)
                if (Element.hasAttribute(node, attr)) results.push(node);
            return results;
        },

        attr: function(nodes, root, attr, value, operator, combinator) {
            if (!nodes) nodes = root.getElementsByTagName("*");
            if (nodes && combinator) nodes = this[combinator](nodes);
            var handler = Selector.operators[operator], results = [];
            for (var i = 0, node; node = nodes[i]; i++) {
                var nodeValue = Element.readAttribute(node, attr);
                if (nodeValue === null) continue;
                if (handler(nodeValue, value)) results.push(node);
            }
            return results;
        },

        pseudo: function(nodes, name, value, root, combinator) {
            if (nodes && combinator) nodes = this[combinator](nodes);
            if (!nodes) nodes = root.getElementsByTagName("*");
            return Selector.pseudos[name](nodes, value, root);
        }
    },

    pseudos: {
        'first-child': function(nodes, value, root) {
            for (var i = 0, results = [], node; node = nodes[i]; i++) {
                if (Selector.handlers.previousElementSibling(node)) continue;
                results.push(node);
            }
            return results;
        },
        'last-child': function(nodes, value, root) {
            for (var i = 0, results = [], node; node = nodes[i]; i++) {
                if (Selector.handlers.nextElementSibling(node)) continue;
                results.push(node);
            }
            return results;
        },
        'only-child': function(nodes, value, root) {
            var h = Selector.handlers;
            for (var i = 0, results = [], node; node = nodes[i]; i++)
                if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
                results.push(node);
            return results;
        },
        'nth-child': function(nodes, formula, root) {
            return Selector.pseudos.nth(nodes, formula, root);
        },
        'nth-last-child': function(nodes, formula, root) {
            return Selector.pseudos.nth(nodes, formula, root, true);
        },
        'nth-of-type': function(nodes, formula, root) {
            return Selector.pseudos.nth(nodes, formula, root, false, true);
        },
        'nth-last-of-type': function(nodes, formula, root) {
            return Selector.pseudos.nth(nodes, formula, root, true, true);
        },
        'first-of-type': function(nodes, formula, root) {
            return Selector.pseudos.nth(nodes, "1", root, false, true);
        },
        'last-of-type': function(nodes, formula, root) {
            return Selector.pseudos.nth(nodes, "1", root, true, true);
        },
        'only-of-type': function(nodes, formula, root) {
            var p = Selector.pseudos;
            return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
        },

        getIndices: function(a, b, total) {
            if (a == 0) return b > 0 ? [b] : [];
            return $R(1, total).inject([], function(memo, i) {
                if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
                return memo;
            });
        },

        nth: function(nodes, formula, root, reverse, ofType) {
            if (nodes.length == 0) return [];
            if (formula == 'even') formula = '2n+0';
            if (formula == 'odd') formula = '2n+1';
            var h = Selector.handlers, results = [], indexed = [], m;
            h.mark(nodes);
            for (var i = 0, node; node = nodes[i]; i++) {
                if (!node.parentNode._countedByPrototype) {
                    h.index(node.parentNode, reverse, ofType);
                    indexed.push(node.parentNode);
                }
            }
            if (formula.match(/^\d+$/)) { // just a number
                formula = Number(formula);
                for (var i = 0, node; node = nodes[i]; i++)
                    if (node.nodeIndex == formula) results.push(node);
            } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
                if (m[1] == "-") m[1] = -1;
                var a = m[1] ? Number(m[1]) : 1;
                var b = m[2] ? Number(m[2]) : 0;
                var indices = Selector.pseudos.getIndices(a, b, nodes.length);
                for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
                    for (var j = 0; j < l; j++)
                        if (node.nodeIndex == indices[j]) results.push(node);
                }
            }
            h.unmark(nodes);
            h.unmark(indexed);
            return results;
        },

        'empty': function(nodes, value, root) {
            for (var i = 0, results = [], node; node = nodes[i]; i++) {
                if (node.tagName == '!' || node.firstChild) continue;
                results.push(node);
            }
            return results;
        },

        'not': function(nodes, selector, root) {
            var h = Selector.handlers, selectorType, m;
            var exclusions = new Selector(selector).findElements(root);
            h.mark(exclusions);
            for (var i = 0, results = [], node; node = nodes[i]; i++)
                if (!node._countedByPrototype) results.push(node);
            h.unmark(exclusions);
            return results;
        },

        'enabled': function(nodes, value, root) {
            for (var i = 0, results = [], node; node = nodes[i]; i++)
                if (!node.disabled && (!node.type || node.type !== 'hidden'))
                results.push(node);
            return results;
        },

        'disabled': function(nodes, value, root) {
            for (var i = 0, results = [], node; node = nodes[i]; i++)
                if (node.disabled) results.push(node);
            return results;
        },

        'checked': function(nodes, value, root) {
            for (var i = 0, results = [], node; node = nodes[i]; i++)
                if (node.checked) results.push(node);
            return results;
        }
    },

    operators: {
        '=': function(nv, v) { return nv == v; },
        '!=': function(nv, v) { return nv != v; },
        '^=': function(nv, v) { return nv == v || nv && nv.startsWith(v); },
        '$=': function(nv, v) { return nv == v || nv && nv.endsWith(v); },
        '*=': function(nv, v) { return nv == v || nv && nv.include(v); },
        '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
        '|=': function(nv, v) {
            return ('-' + (nv || "").toUpperCase() +
     '-').include('-' + (v || "").toUpperCase() + '-');
        }
    },

    split: function(expression) {
        var expressions = [];
        expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
            expressions.push(m[1].strip());
        });
        return expressions;
    },

    matchElements: function(elements, expression) {
        var matches = $$(expression), h = Selector.handlers;
        h.mark(matches);
        for (var i = 0, results = [], element; element = elements[i]; i++)
            if (element._countedByPrototype) results.push(element);
        h.unmark(matches);
        return results;
    },

    findElement: function(elements, expression, index) {
        if (Object.isNumber(expression)) {
            index = expression; expression = false;
        }
        return Selector.matchElements(elements, expression || '*')[index || 0];
    },

    findChildElements: function(element, expressions) {
        expressions = Selector.split(expressions.join(','));
        var results = [], h = Selector.handlers;
        for (var i = 0, l = expressions.length, selector; i < l; i++) {
            selector = new Selector(expressions[i].strip());
            h.concat(results, selector.findElements(element));
        }
        return (l > 1) ? h.unique(results) : results;
    }
});

if (Prototype.Browser.IE) {
    Object.extend(Selector.handlers, {
        concat: function(a, b) {
            for (var i = 0, node; node = b[i]; i++)
                if (node.tagName !== "!") a.push(node);
            return a;
        }
    });
}

function $$() {
    return Selector.findChildElements(document, $A(arguments));
}

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;

        var data = elements.inject({}, 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)))) {
                    if (key in result) {
                        if (!Object.isArray(result[key])) result[key] = [result[key]];
                        result[key].push(value);
                    }
                    else result[key] = value;
                }
            }
            return result;
        });

        return options.hash ? data : Object.toQueryString(data);
    }
};

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

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

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

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

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

    selectMany: function(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(this.optionValue(opt));
        }
        return values;
    },

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

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


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 _isButton;
    if (Prototype.Browser.IE) {
        var buttonMap = { 0: 1, 1: 4, 2: 2 };
        _isButton = function(event, code) {
            return event.button === buttonMap[code];
        };
    } else if (Prototype.Browser.WebKit) {
        _isButton = function(event, code) {
            switch (code) {
                case 0: return event.which == 1 && !event.metaKey;
                case 1: return event.which == 1 && event.metaKey;
                default: return false;
            }
        };
    } else {
        _isButton = function(event, code) {
            return event.which ? (event.which === code + 1) : (event.button === code);
        };
    }

    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;
        var elements = [element].concat(element.ancestors());
        return Selector.findElement(elements, expression, 0);
    }

    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 (Prototype.Browser.IE) {
        function _relatedTarget(event) {
            var element;
            switch (event.type) {
                case 'mouseover': element = event.fromElement; break;
                case 'mouseout': element = event.toElement; break;
                default: return null;
            }
            return Element.extend(element);
        }

        Object.extend(methods, {
            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 (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
            });

            return Object.extend(event, methods);
        };
    } else {
        Event.prototype = window.Event.prototype || document.createEvent('HTMLEvents').__proto__;
        Object.extend(Event.prototype, methods);
        Event.extend = Prototype.K;
    }

    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;

    if (!MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED) {
        _getDOMEventName = function(eventName) {
            var translations = { mouseenter: "mouseover", mouseleave: "mouseout" };
            return eventName in translations ? 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("onfilterchange", 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 (Object.isUndefined(registry)) return element;

        if (eventName && !handler) {
            var responders = registry.get(eventName);

            if (Object.isUndefined(responders)) return element;

            responders.each(function(r) {
                Element.stopObserving(element, eventName, r.handler);
            });
            return element;
        } else if (!eventName) {
            registry.each(function(pair) {
                var eventName = pair.key, responders = pair.value;

                responders.each(function(r) {
                    Element.stopObserving(element, eventName, r.handler);
                });
            });
            return element;
        }

        var responders = registry.get(eventName);

        if (!responders) return;

        var responder = responders.find(function(r) { return r.handler === handler; });
        if (!responder) return element;

        var actualEventName = _getDOMEventName(eventName);

        if (eventName.include(':')) {
            if (element.removeEventListener)
                element.removeEventListener("dataavailable", responder, false);
            else {
                element.detachEvent("ondataavailable", responder);
                element.detachEvent("onfilterchange", responder);
            }
        } else {
            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', true, true);
        } else {
            event = document.createEventObject();
            event.eventType = bubble ? 'ondataavailable' : 'onfilterchange';
        }

        event.eventName = eventName;
        event.memo = memo || {};

        if (document.createEvent)
            element.dispatchEvent(event);
        else
            element.fireEvent(event.eventType, event);

        return Event.extend(event);
    }


    Object.extend(Event, Event.Methods);

    Object.extend(Event, {
        fire: fire,
        observe: observe,
        stopObserving: stopObserving
    });

    Element.addMethods({
        fire: fire,

        observe: observe,

        stopObserving: stopObserving
    });

    Object.extend(document, {
        fire: fire.methodize(),

        observe: observe.methodize(),

        stopObserving: stopObserving.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);

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


/*prototypeEnd*/
/*scriptaculousStart*/
var Scriptaculous = {
    Version: '1.8.1',
    require: function(libraryName) {
        // inserting via DOM fails in Safari 2.0, so brute force approach
        document.write('<script type="text/javascript" src="' + libraryName + '"><\/script>');
    },
    REQUIRED_PROTOTYPE: '1.6.0',
    load: function() {
        function convertVersionString(versionString) {
            var r = versionString.split('.');
            return parseInt(r[0]) * 100000 + parseInt(r[1]) * 1000 + parseInt(r[2]);
        }

        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);

        $A(document.getElementsByTagName("script")).findAll(function(s) {
            return (s.src && s.src.match(/scriptaculous\.js(\?.*)?$/))
        }).each(function(s) {
            var path = s.src.replace(/scriptaculous\.js(\?.*)?$/, '');
            var 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();
/*scriptaculousEnd*/
/*builderStart*/
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)));
            }
        });
    }
}
/*builderEnd*/
/*effectsStart*/
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) + 0.5;
        },
        reverse: function(pos) {
            return 1 - pos;
        },
        flicker: function(pos) {
            var pos = ((-Math.cos(pos * Math.PI) / 4) + 0.75) + Math.random() / 4;
            return pos > 1 ? 1 : pos;
        },
        wobble: function(pos) {
            return (-Math.cos(pos * Math.PI * (9 * pos)) / 2) + 0.5;
        },
        pulse: function(pos, pulses) {
            pulses = pulses || 5;
            return (
        ((pos % (1 / pulses)) * pulses).round() == 0 ?
              ((pos * pulses * 2) - (pos * pulses * 2).floor()) :
          1 - ((pos * pulses * 2) - (pos * pulses * 2).floor())
        );
        },
        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) {
        element = $(element);
        effect = (effect || 'appear').toLowerCase();
        var options = Object.extend({
            queue: { position: 'end', scope: (element.id || 'global'), limit: 1 }
        }, arguments[2] || {});
        Effect[element.visible() ?
      Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, 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) {
        function codeForEvent(options, eventName) {
            return (
        (options[eventName + 'Internal'] ? 'this.options.' + eventName + 'Internal(this);' : '') +
        (options[eventName] ? 'this.options.' + eventName + '(this);' : '')
      );
        }
        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;

        eval('this.render = function(pos){ ' +
      'if (this.state=="idle"){this.state="running";' +
      codeForEvent(this.options, 'beforeSetup') +
      (this.setup ? 'this.setup();' : '') +
      codeForEvent(this.options, 'afterSetup') +
      '};if (this.state=="running"){' +
      'pos=this.options.transition(pos)*' + this.fromToDelta + '+' + this.options.from + ';' +
      'this.position=pos;' +
      codeForEvent(this.options, 'beforeUpdate') +
      (this.update ? 'this.update(pos);' : '') +
      codeForEvent(this.options, '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(),
    max = (window.height || document.body.scrollHeight) - document.viewport.getHeight();

    if (options.offset) elementOffsets[1] += options.offset;

    return new Effect.Tween(null,
    scrollOffsets.top,
    elementOffsets[1] > max ? max : 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] || {};
    var oldOpacity = element.getInlineOpacity();
    var transition = options.transition || Effect.Transitions.sinoidal;
    var reverser = function(pos) { return transition(1 - Effect.Transitions.pulse(pos, options.pulses)) };
    reverser.bind(transition);
    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);

/*effectsEnd*/