var Prototype = {
    Version: '1.6.0.2',
    Browser: {
        IE: !! (window.attachEvent && !window.opera),
        Opera: !! window.opera,
        WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
        Gecko: navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
        MobileSafari: !! navigator.userAgent.match(/Apple.*Mobile.*Safari/)
    },
    BrowserFeatures: {
        XPath: !! document.evaluate,
        ElementExtensions: !! window.HTMLElement,
        SpecificElementExtensions: document.createElement('div').__proto__ && document.createElement('div').__proto__ !== document.createElement('form').__proto__
    },
    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 Class = {
    create: function () {
        var a = null,
            properties = $A(arguments);
        if (Object.isFunction(properties[0])) a = properties.shift();

        function klass() {
            this.initialize.apply(this, arguments)
        }
        Object.extend(klass, Class.Methods);
        klass.superclass = a;
        klass.subclasses = [];
        if (a) {
            var b = function () {};
            b.prototype = a.prototype;
            klass.prototype = new b;
            a.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
    }
};
Class.Methods = {
    addMethods: function (a) {
        var b = this.superclass && this.superclass.prototype;
        var c = Object.keys(a);
        if (!Object.keys({
            toString: true
        }).length) c.push("toString", "valueOf");
        for (var i = 0, length = c.length; i < length; i++) {
            var d = c[i],
                value = a[d];
            if (b && Object.isFunction(value) && value.argumentNames().first() == "$super") {
                var e = value,
                    value = Object.extend((function (m) {
                        return function () {
                            return b[m].apply(this, arguments)
                        }
                    })(d).wrap(e), {
                        valueOf: function () {
                            return e
                        },
                        toString: function () {
                            return e.toString()
                        }
                    })
            }
            this.prototype[d] = value
        }
        return this
    }
};
var Abstract = {};
Object.extend = function (a, b) {
    for (var c in b) a[c] = b[c];
    return a
};
Object.extend(Object, {
    inspect: function (a) {
        try {
            if (Object.isUndefined(a)) return 'undefined';
            if (a === null) return 'null';
            return a.inspect ? a.inspect() : String(a)
        } catch (e) {
            if (e instanceof RangeError) return '...';
            throw e;
        }
    },
    toJSON: function (a) {
        var b = typeof a;
        switch (b) {
        case 'undefined':
        case 'function':
        case 'unknown':
            return;
        case 'boolean':
            return a.toString()
        }
        if (a === null) return 'null';
        if (a.toJSON) return a.toJSON();
        if (Object.isElement(a)) return;
        var c = [];
        for (var d in a) {
            var e = Object.toJSON(a[d]);
            if (!Object.isUndefined(e)) c.push(d.toJSON() + ': ' + e)
        }
        return '{' + c.join(', ') + '}'
    },
    toQueryString: function (a) {
        return $H(a).toQueryString()
    },
    toHTML: function (a) {
        return a && a.toHTML ? a.toHTML() : String.interpret(a)
    },
    keys: function (a) {
        var b = [];
        for (var c in a) b.push(c);
        return b
    },
    values: function (a) {
        var b = [];
        for (var c in a) b.push(a[c]);
        return b
    },
    clone: function (a) {
        return Object.extend({}, a)
    },
    isElement: function (a) {
        return a && a.nodeType == 1
    },
    isArray: function (a) {
        return a != null && typeof a == "object" && 'splice' in a && 'join' in a
    },
    isHash: function (a) {
        return a instanceof Hash
    },
    isFunction: function (a) {
        return typeof a == "function"
    },
    isString: function (a) {
        return typeof a == "string"
    },
    isNumber: function (a) {
        return typeof a == "number"
    },
    isUndefined: function (a) {
        return typeof a == "undefined"
    }
});
Object.extend(Function.prototype, {
    argumentNames: function () {
        var a = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
        return a.length == 1 && !a[0] ? [] : a
    },
    bind: function () {
        if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
        var a = this,
            args = $A(arguments),
            object = args.shift();
        return function () {
            return a.apply(object, args.concat($A(arguments)))
        }
    },
    bindAsEventListener: function () {
        var b = this,
            args = $A(arguments),
            object = args.shift();
        return function (a) {
            return b.apply(object, [a || window.event].concat(args))
        }
    },
    curry: function () {
        if (!arguments.length) return this;
        var a = this,
            args = $A(arguments);
        return function () {
            return a.apply(this, args.concat($A(arguments)))
        }
    },
    delay: function () {
        var a = this,
            args = $A(arguments),
            timeout = args.shift() * 1000;
        return window.setTimeout(function () {
            return a.apply(a, args)
        }, timeout)
    },
    wrap: function (a) {
        var b = this;
        return function () {
            return a.apply(this, [b.bind(this)].concat($A(arguments)))
        }
    },
    methodize: function () {
        if (this._methodized) return this._methodized;
        var a = this;
        return this._methodized = function () {
            return a.apply(null, [this].concat($A(arguments)))
        }
    }
});
Function.prototype.defer = Function.prototype.delay.curry(0.01);
Date.prototype.toJSON = function () {
    return '"' + this.getUTCFullYear() + '-' + (this.getUTCMonth() + 1).toPaddedString(2) + '-' + this.getUTCDate().toPaddedString(2) + 'T' + this.getUTCHours().toPaddedString(2) + ':' + this.getUTCMinutes().toPaddedString(2) + ':' + this.getUTCSeconds().toPaddedString(2) + 'Z"'
};
var Try = {
    these: function () {
        var a;
        for (var i = 0, length = arguments.length; i < length; i++) {
            var b = arguments[i];
            try {
                a = b();
                break
            } catch (e) {}
        }
        return a
    }
};
RegExp.prototype.match = RegExp.prototype.test;
RegExp.escape = function (a) {
    return String(a).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1')
};
var PeriodicalExecuter = Class.create({
    initialize: function (a, b) {
        this.callback = a;
        this.frequency = b;
        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()
            } finally {
                this.currentlyExecuting = false
            }
        }
    }
});
Object.extend(String, {
    interpret: function (a) {
        return a == null ? '' : String(a)
    },
    specialChar: {
        '\b': '\\b',
        '\t': '\\t',
        '\n': '\\n',
        '\f': '\\f',
        '\r': '\\r',
        '\\': '\\\\'
    }
});
Object.extend(String.prototype, {
    gsub: function (a, b) {
        var c = '',
            source = this,
            match;
        b = arguments.callee.prepareReplacement(b);
        while (source.length > 0) {
            if (match = source.match(a)) {
                c += source.slice(0, match.index);
                c += String.interpret(b(match));
                source = source.slice(match.index + match[0].length)
            } else {
                c += source, source = ''
            }
        }
        return c
    },
    sub: function (b, c, d) {
        c = this.gsub.prepareReplacement(c);
        d = Object.isUndefined(d) ? 1 : d;
        return this.gsub(b, function (a) {
            if (--d < 0) return a[0];
            return c(a)
        })
    },
    scan: function (a, b) {
        this.gsub(a, b);
        return String(this)
    },
    truncate: function (a, b) {
        a = a || 30;
        b = Object.isUndefined(b) ? '...' : b;
        return this.length > a ? this.slice(0, a - b.length) + b : String(this)
    },
    strip: function () {
        return this.replace(/^\s+/, '').replace(/\s+$/, '')
    },
    stripTags: function () {
        return this.replace(/<\/?[^>]+>/gi, '')
    },
    stripScripts: function () {
        return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '')
    },
    extractScripts: function () {
        var b = new RegExp(Prototype.ScriptFragment, 'img');
        var c = new RegExp(Prototype.ScriptFragment, 'im');
        return (this.match(b) || []).map(function (a) {
            return (a.match(c) || ['', ''])[1]
        })
    },
    evalScripts: function () {
        return this.extractScripts().map(function (a) {
            return eval(a)
        })
    },
    escapeHTML: function () {
        var a = arguments.callee;
        a.text.data = this;
        return a.div.innerHTML
    },
    unescapeHTML: function () {
        var c = new Element('div');
        c.innerHTML = this.stripTags();
        return c.childNodes[0] ? (c.childNodes.length > 1 ? $A(c.childNodes).inject('', function (a, b) {
            return a + b.nodeValue
        }) : c.childNodes[0].nodeValue) : ''
    },
    toQueryParams: function (e) {
        var f = this.strip().match(/([^?#]*)(#.*)?$/);
        if (!f) return {};
        return f[1].split(e || '&').inject({}, function (a, b) {
            if ((b = b.split('='))[0]) {
                var c = decodeURIComponent(b.shift());
                var d = b.length > 1 ? b.join('=') : b[0];
                if (d != undefined) d = decodeURIComponent(d);
                if (c in a) {
                    if (!Object.isArray(a[c])) a[c] = [a[c]];
                    a[c].push(d)
                } else a[c] = d
            }
            return a
        })
    },
    toArray: function () {
        return this.split('')
    },
    succ: function () {
        return this.slice(0, this.length - 1) + String.fromCharCode(this.charCodeAt(this.length - 1) + 1)
    },
    times: function (a) {
        return a < 1 ? '' : new Array(a + 1).join(this)
    },
    camelize: function () {
        var a = this.split('-'),
            len = a.length;
        if (len == 1) return a[0];
        var b = this.charAt(0) == '-' ? a[0].charAt(0).toUpperCase() + a[0].substring(1) : a[0];
        for (var i = 1; i < len; i++) b += a[i].charAt(0).toUpperCase() + a[i].substring(1);
        return b
    },
    capitalize: function () {
        return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase()
    },
    underscore: function () {
        return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/, '#{1}_#{2}').gsub(/([a-z\d])([A-Z])/, '#{1}_#{2}').gsub(/-/, '_').toLowerCase()
    },
    dasherize: function () {
        return this.gsub(/_/, '-')
    },
    inspect: function (c) {
        var d = this.gsub(/[\x00-\x1f\\]/, function (a) {
            var b = String.specialChar[a[0]];
            return b ? b : '\\u00' + a[0].charCodeAt().toPaddedString(2, 16)
        });
        if (c) return '"' + d.replace(/"/g, '\\"') + '"';
        return "'" + d.replace(/'/g, '\\\'') + "'"
    },
    toJSON: function () {
        return this.inspect(true)
    },
    unfilterJSON: function (a) {
        return this.sub(a || Prototype.JSONFilter, '#{1}')
    },
    isJSON: function () {
        var a = this;
        if (a.blank()) return false;
        a = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
        return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(a)
    },
    evalJSON: function (a) {
        var b = this.unfilterJSON();
        try {
            if (!a || b.isJSON()) return eval('(' + b + ')')
        } catch (e) {}
        throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
    },
    include: function (a) {
        return this.indexOf(a) > -1
    },
    startsWith: function (a) {
        return this.indexOf(a) === 0
    },
    endsWith: function (a) {
        var d = this.length - a.length;
        return d >= 0 && this.lastIndexOf(a) === d
    },
    empty: function () {
        return this == ''
    },
    blank: function () {
        return /^\s*$/.test(this)
    },
    interpolate: function (a, b) {
        return new Template(this, b).evaluate(a)
    }
});
if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
    escapeHTML: function () {
        return this.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;')
    },
    unescapeHTML: function () {
        return this.replace(/&amp;/g, '&').replace(/&lt;/g, '<').replace(/&gt;/g, '>')
    }
});
String.prototype.gsub.prepareReplacement = function (b) {
    if (Object.isFunction(b)) return b;
    var c = new Template(b);
    return function (a) {
        return c.evaluate(a)
    }
};
String.prototype.parseQuery = String.prototype.toQueryParams;
Object.extend(String.prototype.escapeHTML, {
    div: document.createElement('div'),
    text: document.createTextNode('')
});
with(String.prototype.escapeHTML) div.appendChild(text);
var Template = Class.create({
    initialize: function (a, b) {
        this.template = a.toString();
        this.pattern = b || Template.Pattern
    },
    evaluate: function (f) {
        if (Object.isFunction(f.toTemplateReplacements)) f = f.toTemplateReplacements();
        return this.template.gsub(this.pattern, function (a) {
            if (f == null) return '';
            var b = a[1] || '';
            if (b == '\\') return a[2];
            var c = f,
                expr = a[3];
            var d = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
            a = d.exec(expr);
            if (a == null) return b;
            while (a != null) {
                var e = a[1].startsWith('[') ? a[2].gsub('\\\\]', ']') : a[1];
                c = c[e];
                if (null == c || '' == a[3]) break;
                expr = expr.substring('[' == a[3] ? a[1].length : a[0].length);
                a = d.exec(expr)
            }
            return b + String.interpret(c)
        })
    }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
var $break = {};
var Enumerable = {
    each: function (b, c) {
        var d = 0;
        b = b.bind(c);
        try {
            this._each(function (a) {
                b(a, d++)
            })
        } catch (e) {
            if (e != $break) throw e;
        }
        return this
    },
    eachSlice: function (a, b, c) {
        b = b ? b.bind(c) : Prototype.K;
        var d = -a,
            slices = [],
            array = this.toArray();
        while ((d += a) < array.length) slices.push(array.slice(d, d + a));
        return slices.collect(b, c)
    },
    all: function (c, d) {
        c = c ? c.bind(d) : Prototype.K;
        var e = true;
        this.each(function (a, b) {
            e = e && !! c(a, b);
            if (!e) throw $break;
        });
        return e
    },
    any: function (c, d) {
        c = c ? c.bind(d) : Prototype.K;
        var e = false;
        this.each(function (a, b) {
            if (e = !! c(a, b)) throw $break;
        });
        return e
    },
    collect: function (c, d) {
        c = c ? c.bind(d) : Prototype.K;
        var e = [];
        this.each(function (a, b) {
            e.push(c(a, b))
        });
        return e
    },
    detect: function (c, d) {
        c = c.bind(d);
        var e;
        this.each(function (a, b) {
            if (c(a, b)) {
                e = a;
                throw $break;
            }
        });
        return e
    },
    findAll: function (c, d) {
        c = c.bind(d);
        var e = [];
        this.each(function (a, b) {
            if (c(a, b)) e.push(a)
        });
        return e
    },
    grep: function (c, d, e) {
        d = d ? d.bind(e) : Prototype.K;
        var f = [];
        if (Object.isString(c)) c = new RegExp(c);
        this.each(function (a, b) {
            if (c.match(a)) f.push(d(a, b))
        });
        return f
    },
    include: function (b) {
        if (Object.isFunction(this.indexOf)) if (this.indexOf(b) != -1) return true;
        var c = false;
        this.each(function (a) {
            if (a == b) {
                c = true;
                throw $break;
            }
        });
        return c
    },
    inGroupsOf: function (b, c) {
        c = Object.isUndefined(c) ? null : c;
        return this.eachSlice(b, function (a) {
            while (a.length < b) a.push(c);
            return a
        })
    },
    inject: function (c, d, e) {
        d = d.bind(e);
        this.each(function (a, b) {
            c = d(c, a, b)
        });
        return c
    },
    invoke: function (b) {
        var c = $A(arguments).slice(1);
        return this.map(function (a) {
            return a[b].apply(a, c)
        })
    },
    max: function (c, d) {
        c = c ? c.bind(d) : Prototype.K;
        var e;
        this.each(function (a, b) {
            a = c(a, b);
            if (e == null || a >= e) e = a
        });
        return e
    },
    min: function (c, d) {
        c = c ? c.bind(d) : Prototype.K;
        var e;
        this.each(function (a, b) {
            a = c(a, b);
            if (e == null || a < e) e = a
        });
        return e
    },
    partition: function (c, d) {
        c = c ? c.bind(d) : Prototype.K;
        var e = [],
            falses = [];
        this.each(function (a, b) {
            (c(a, b) ? e : falses).push(a)
        });
        return [e, falses]
    },
    pluck: function (b) {
        var c = [];
        this.each(function (a) {
            c.push(a[b])
        });
        return c
    },
    reject: function (c, d) {
        c = c.bind(d);
        var e = [];
        this.each(function (a, b) {
            if (!c(a, b)) e.push(a)
        });
        return e
    },
    sortBy: function (e, f) {
        e = e.bind(f);
        return this.map(function (a, b) {
            return {
                value: a,
                criteria: e(a, b)
            }
        }).sort(function (c, d) {
            var a = c.criteria,
                b = d.criteria;
            return a < b ? -1 : a > b ? 1 : 0
        }).pluck('value')
    },
    toArray: function () {
        return this.map()
    },
    zip: function () {
        var c = Prototype.K,
            args = $A(arguments);
        if (Object.isFunction(args.last())) c = args.pop();
        var d = [this].concat(args).map($A);
        return this.map(function (a, b) {
            return c(d.pluck(b))
        })
    },
    size: function () {
        return this.toArray().length
    },
    inspect: function () {
        return '#<Enumerable:' + this.toArray().inspect() + '>'
    }
};
Object.extend(Enumerable, {
    map: Enumerable.collect,
    find: Enumerable.detect,
    select: Enumerable.findAll,
    filter: Enumerable.findAll,
    member: Enumerable.include,
    entries: Enumerable.toArray,
    every: Enumerable.all,
    some: Enumerable.any
});

function $A(a) {
    if (!a) return [];
    if (a.toArray) return a.toArray();
    var b = a.length || 0,
        results = new Array(b);
    while (b--) results[b] = a[b];
    return results
}
if (Prototype.Browser.WebKit) {
    $A = function (a) {
        if (!a) return [];
        if (!(Object.isFunction(a) && a == '[object NodeList]') && a.toArray) return a.toArray();
        var b = a.length || 0,
            results = new Array(b);
        while (b--) results[b] = a[b];
        return results
    }
}
Array.from = $A;
Object.extend(Array.prototype, Enumerable);
if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;
Object.extend(Array.prototype, {
    _each: function (a) {
        for (var i = 0, length = this.length; i < length; i++) a(this[i])
    },
    clear: function () {
        this.length = 0;
        return this
    },
    first: function () {
        return this[0]
    },
    last: function () {
        return this[this.length - 1]
    },
    compact: function () {
        return this.select(function (a) {
            return a != null
        })
    },
    flatten: function () {
        return this.inject([], function (a, b) {
            return a.concat(Object.isArray(b) ? b.flatten() : [b])
        })
    },
    without: function () {
        var b = $A(arguments);
        return this.select(function (a) {
            return !b.include(a)
        })
    },
    reverse: function (a) {
        return (a !== false ? this : this.toArray())._reverse()
    },
    reduce: function () {
        return this.length > 1 ? this : this[0]
    },
    uniq: function (d) {
        return this.inject([], function (a, b, c) {
            if (0 == c || (d ? a.last() != b : !a.include(b))) a.push(b);
            return a
        })
    },
    intersect: function (c) {
        return this.uniq().findAll(function (b) {
            return c.detect(function (a) {
                return b === a
            })
        })
    },
    clone: function () {
        return [].concat(this)
    },
    size: function () {
        return this.length
    },
    inspect: function () {
        return '[' + this.map(Object.inspect).join(', ') + ']'
    },
    toJSON: function () {
        var c = [];
        this.each(function (a) {
            var b = Object.toJSON(a);
            if (!Object.isUndefined(b)) c.push(b)
        });
        return '[' + c.join(', ') + ']'
    }
});
if (Object.isFunction(Array.prototype.forEach)) Array.prototype._each = Array.prototype.forEach;
if (!Array.prototype.indexOf) Array.prototype.indexOf = function (a, i) {
    i || (i = 0);
    var b = this.length;
    if (i < 0) i = b + i;
    for (; i < b; i++) if (this[i] === a) return i;
    return -1
};
if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function (a, i) {
    i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
    var n = this.slice(0, i).reverse().indexOf(a);
    return (n < 0) ? n : i - n - 1
};
Array.prototype.toArray = Array.prototype.clone;

function $w(a) {
    if (!Object.isString(a)) return [];
    a = a.strip();
    return a ? a.split(/\s+/) : []
}
if (Prototype.Browser.Opera) {
    Array.prototype.concat = function () {
        var a = [];
        for (var i = 0, length = this.length; i < length; i++) a.push(this[i]);
        for (var i = 0, length = arguments.length; i < length; i++) {
            if (Object.isArray(arguments[i])) {
                for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++) a.push(arguments[i][j])
            } else {
                a.push(arguments[i])
            }
        }
        return a
    }
}
Object.extend(Number.prototype, {
    toColorPart: function () {
        return this.toPaddedString(2, 16)
    },
    succ: function () {
        return this + 1
    },
    times: function (a) {
        $R(0, this, true).each(a);
        return this
    },
    toPaddedString: function (a, b) {
        var c = this.toString(b || 10);
        return '0'.times(a - c.length) + c
    },
    toJSON: function () {
        return isFinite(this) ? this.toString() : 'null'
    }
});
$w('abs round ceil floor').each(function (a) {
    Number.prototype[a] = Math[a].methodize()
});

function $H(a) {
    return new Hash(a)
};
var Hash = Class.create(Enumerable, (function () {
    function toQueryPair(a, b) {
        if (Object.isUndefined(b)) return a;
        return a + '=' + encodeURIComponent(String.interpret(b))
    }
    return {
        initialize: function (a) {
            this._object = Object.isHash(a) ? a.toObject() : Object.clone(a)
        },
        _each: function (a) {
            for (var b in this._object) {
                var c = this._object[b],
                    pair = [b, c];
                pair.key = b;
                pair.value = c;
                a(pair)
            }
        },
        set: function (a, b) {
            return this._object[a] = b
        },
        get: function (a) {
            return this._object[a]
        },
        unset: function (a) {
            var b = this._object[a];
            delete this._object[a];
            return b
        },
        toObject: function () {
            return Object.clone(this._object)
        },
        keys: function () {
            return this.pluck('key')
        },
        values: function () {
            return this.pluck('value')
        },
        index: function (b) {
            var c = this.detect(function (a) {
                return a.value === b
            });
            return c && c.key
        },
        merge: function (a) {
            return this.clone().update(a)
        },
        update: function (c) {
            return new Hash(c).inject(this, function (a, b) {
                a.set(b.key, b.value);
                return a
            })
        },
        toQueryString: function () {
            return this.map(function (a) {
                var b = encodeURIComponent(a.key),
                    values = a.value;
                if (values && typeof values == 'object') {
                    if (Object.isArray(values)) return values.map(toQueryPair.curry(b)).join('&')
                }
                return toQueryPair(b, values)
            }).join('&')
        },
        inspect: function () {
            return '#<Hash:{' + this.map(function (a) {
                return a.map(Object.inspect).join(': ')
            }).join(', ') + '}>'
        },
        toJSON: function () {
            return Object.toJSON(this.toObject())
        },
        clone: function () {
            return new Hash(this)
        }
    }
})());
Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
    initialize: function (a, b, c) {
        this.start = a;
        this.end = b;
        this.exclusive = c
    },
    _each: function (a) {
        var b = this.start;
        while (this.include(b)) {
            a(b);
            b = b.succ()
        }
    },
    include: function (a) {
        if (a < this.start) return false;
        if (this.exclusive) return a < this.end;
        return a <= this.end
    }
});
var $R = function (a, b, c) {
    return new ObjectRange(a, b, c)
};
var Ajax = {
    getTransport: function () {
        return Try.these(function () {
            return new XMLHttpRequest()
        }, function () {
            return new ActiveXObject('Msxml2.XMLHTTP')
        }, function () {
            return new ActiveXObject('Microsoft.XMLHTTP')
        }) || false
    },
    activeRequestCount: 0
};
Ajax.Responders = {
    responders: [],
    _each: function (a) {
        this.responders._each(a)
    },
    register: function (a) {
        if (!this.include(a)) this.responders.push(a)
    },
    unregister: function (a) {
        this.responders = this.responders.without(a)
    },
    dispatch: function (b, c, d, f) {
        this.each(function (a) {
            if (Object.isFunction(a[b])) {
                try {
                    a[b].apply(a, [c, d, f])
                } catch (e) {}
            }
        })
    }
};
Object.extend(Ajax.Responders, Enumerable);
Ajax.Responders.register({
    onCreate: function () {
        Ajax.activeRequestCount++
    },
    onComplete: function () {
        Ajax.activeRequestCount--
    }
});
Ajax.Base = Class.create({
    initialize: function (a) {
        this.options = {
            method: 'post',
            asynchronous: true,
            contentType: 'application/x-www-form-urlencoded',
            encoding: 'UTF-8',
            parameters: '',
            evalJSON: true,
            evalJS: true
        };
        Object.extend(this.options, a || {});
        this.options.method = this.options.method.toLowerCase();
        if (Object.isString(this.options.parameters)) this.options.parameters = this.options.parameters.toQueryParams();
        else if (Object.isHash(this.options.parameters)) this.options.parameters = this.options.parameters.toObject()
    }
});
Ajax.Request = Class.create(Ajax.Base, {
    _complete: false,
    initialize: function ($super, b, c) {
        $super(c);
        this.transport = Ajax.getTransport();
        this.request(b)
    },
    request: function (a) {
        this.url = a;
        this.method = this.options.method;
        var b = Object.clone(this.options.parameters);
        if (!['get', 'post'].include(this.method)) {
            b['_method'] = this.method;
            this.method = 'post'
        }
        this.parameters = b;
        if (b = Object.toQueryString(b)) {
            if (this.method == 'get') this.url += (this.url.include('?') ? '&' : '?') + b;
            else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent)) b += '&_='
        }
        try {
            var c = new Ajax.Response(this);
            if (this.options.onCreate) this.options.onCreate(c);
            Ajax.Responders.dispatch('onCreate', this, c);
            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 || b) : null;
            this.transport.send(this.body);
            if (!this.options.asynchronous && this.transport.overrideMimeType) this.onStateChange()
        } catch (e) {
            this.dispatchException(e)
        }
    },
    onStateChange: function () {
        var a = this.transport.readyState;
        if (a > 1 && !((a == 4) && this._complete)) this.respondToReadyState(this.transport.readyState)
    },
    setRequestHeaders: function () {
        var b = {
            'X-Requested-With': 'XMLHttpRequest',
            'X-Prototype-Version': Prototype.Version,
            'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
        };
        if (this.method == 'post') {
            b['Content-type'] = this.options.contentType + (this.options.encoding ? '; charset=' + this.options.encoding : '');
            if (this.transport.overrideMimeType && (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0, 2005])[1] < 2005) b['Connection'] = 'close'
        }
        if (typeof this.options.requestHeaders == 'object') {
            var c = this.options.requestHeaders;
            if (Object.isFunction(c.push)) for (var i = 0, length = c.length; i < length; i += 2) b[c[i]] = c[i + 1];
            else $H(c).each(function (a) {
                b[a.key] = a.value
            })
        }
        for (var d in b) this.transport.setRequestHeader(d, b[d])
    },
    success: function () {
        var a = this.getStatus();
        return !a || (a >= 200 && a < 300)
    },
    getStatus: function () {
        try {
            return this.transport.status || 0
        } catch (e) {
            return 0
        }
    },
    respondToReadyState: function (a) {
        var b = Ajax.Request.Events[a],
            response = new Ajax.Response(this);
        if (b == 'Complete') {
            try {
                this._complete = true;
                (this.options['on' + response.status] || this.options['on' + (this.success() ? 'Success' : 'Failure')] || Prototype.emptyFunction)(response, response.headerJSON)
            } catch (e) {
                this.dispatchException(e)
            }
            var c = response.getHeader('Content-type');
            if (this.options.evalJS == 'force' || (this.options.evalJS && this.isSameOrigin() && c && c.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i))) this.evalResponse()
        }
        try {
            (this.options['on' + b] || Prototype.emptyFunction)(response, response.headerJSON);
            Ajax.Responders.dispatch('on' + b, this, response, response.headerJSON)
        } catch (e) {
            this.dispatchException(e)
        }
        if (b == '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 (a) {
        try {
            return this.transport.getResponseHeader(a) || null
        } catch (e) {
            return null
        }
    },
    evalResponse: function () {
        try {
            return eval((this.transport.responseText || '').unfilterJSON())
        } catch (e) {
            this.dispatchException(e)
        }
    },
    dispatchException: function (a) {
        (this.options.onException || Prototype.emptyFunction)(this, a);
        Ajax.Responders.dispatch('onException', this, a)
    }
});
Ajax.Request.Events = ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
Ajax.Response = Class.create({
    initialize: function (a) {
        this.request = a;
        var b = this.transport = a.transport,
            readyState = this.readyState = b.readyState;
        if ((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
            this.status = this.getStatus();
            this.statusText = this.getStatusText();
            this.responseText = String.interpret(b.responseText);
            this.headerJSON = this._getHeaderJSON()
        }
        if (readyState == 4) {
            var c = b.responseXML;
            this.responseXML = Object.isUndefined(c) ? null : c;
            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 (a) {
        return this.transport.getResponseHeader(a)
    },
    getAllResponseHeaders: function () {
        return this.transport.getAllResponseHeaders()
    },
    _getHeaderJSON: function () {
        var a = this.getHeader('X-JSON');
        if (!a) return null;
        a = decodeURIComponent(escape(a));
        try {
            return a.evalJSON(this.request.options.sanitizeJSON || !this.request.isSameOrigin())
        } catch (e) {
            this.request.dispatchException(e)
        }
    },
    _getResponseJSON: function () {
        var a = this.request.options;
        if (!a.evalJSON || (a.evalJSON != 'force' && !(this.getHeader('Content-type') || '').include('application/json')) || this.responseText.blank()) return null;
        try {
            return this.responseText.evalJSON(a.sanitizeJSON || !this.request.isSameOrigin())
        } catch (e) {
            this.request.dispatchException(e)
        }
    }
});
Ajax.Updater = Class.create(Ajax.Request, {
    initialize: function ($super, d, e, f) {
        this.container = {
            success: (d.success || d),
            failure: (d.failure || (d.success ? null : d))
        };
        f = Object.clone(f);
        var g = f.onComplete;
        f.onComplete = (function (a, b) {
            this.updateContent(a.responseText);
            if (Object.isFunction(g)) g(a, b)
        }).bind(this);
        $super(e, f)
    },
    updateContent: function (a) {
        var b = this.container[this.success() ? 'success' : 'failure'],
            options = this.options;
        if (!options.evalScripts) a = a.stripScripts();
        if (b = $(b)) {
            if (options.insertion) {
                if (Object.isString(options.insertion)) {
                    var c = {};
                    c[options.insertion] = a;
                    b.insert(c)
                } else options.insertion(b, a)
            } else b.update(a)
        }
    }
});
Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
    initialize: function ($super, b, c, d) {
        $super(d);
        this.onComplete = this.options.onComplete;
        this.frequency = (this.options.frequency || 2);
        this.decay = (this.options.decay || 1);
        this.updater = {};
        this.container = b;
        this.url = c;
        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 (a) {
        if (this.options.decay) {
            this.decay = (a.responseText == this.lastText ? this.decay * this.options.decay : 1);
            this.lastText = a.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 $(a) {
    if (arguments.length > 1) {
        for (var i = 0, elements = [], length = arguments.length; i < length; i++) elements.push($(arguments[i]));
        return elements
    }
    if (Object.isString(a)) a = document.getElementById(a);
    return Element.extend(a)
}
if (Prototype.BrowserFeatures.XPath) {
    document._getElementsByXPath = function (a, b) {
        var c = [];
        var d = document.evaluate(a, $(b) || document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
        for (var i = 0, length = d.snapshotLength; i < length; i++) c.push(Element.extend(d.snapshotItem(i)));
        return c
    }
}
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 () {
    var d = this.Element;
    this.Element = function (a, b) {
        b = b || {};
        a = a.toLowerCase();
        var c = Element.cache;
        if (Prototype.Browser.IE && b.name) {
            a = '<' + a + ' name="' + b.name + '">';
            delete b.name;
            return Element.writeAttribute(document.createElement(a), b)
        }
        if (!c[a]) c[a] = Element.extend(document.createElement(a));
        return Element.writeAttribute(c[a].cloneNode(false), b)
    };
    Object.extend(this.Element, d || {})
}).call(window);
Element.cache = {};
Element.Methods = {
    visible: function (a) {
        return $(a).style.display != 'none'
    },
    toggle: function (a) {
        a = $(a);
        Element[Element.visible(a) ? 'hide' : 'show'](a);
        return a
    },
    hide: function (a) {
        $(a).style.display = 'none';
        return a
    },
    show: function (a) {
        $(a).style.display = '';
        return a
    },
    remove: function (a) {
        a = $(a);
        a.parentNode.removeChild(a);
        return a
    },
    update: function (a, b) {
        a = $(a);
        if (b && b.toElement) b = b.toElement();
        if (Object.isElement(b)) return a.update().insert(b);
        b = Object.toHTML(b);
        a.innerHTML = b.stripScripts();
        b.evalScripts.bind(b).defer();
        return a
    },
    replace: function (a, b) {
        a = $(a);
        if (b && b.toElement) b = b.toElement();
        else if (!Object.isElement(b)) {
            b = Object.toHTML(b);
            var c = a.ownerDocument.createRange();
            c.selectNode(a);
            b.evalScripts.bind(b).defer();
            b = c.createContextualFragment(b.stripScripts())
        }
        a.parentNode.replaceChild(b, a);
        return a
    },
    insert: function (a, b) {
        a = $(a);
        if (Object.isString(b) || Object.isNumber(b) || Object.isElement(b) || (b && (b.toElement || b.toHTML))) b = {
            bottom: b
        };
        var c, insert, tagName, childNodes;
        for (var d in b) {
            c = b[d];
            d = d.toLowerCase();
            insert = Element._insertionTranslations[d];
            if (c && c.toElement) c = c.toElement();
            if (Object.isElement(c)) {
                insert(a, c);
                continue
            }
            c = Object.toHTML(c);
            tagName = ((d == 'before' || d == 'after') ? a.parentNode : a).tagName.toUpperCase();
            childNodes = Element._getContentFromAnonymousElement(tagName, c.stripScripts());
            if (d == 'top' || d == 'after') childNodes.reverse();
            childNodes.each(insert.curry(a));
            c.evalScripts.bind(c).defer()
        }
        return a
    },
    wrap: function (a, b, c) {
        a = $(a);
        if (Object.isElement(b)) $(b).writeAttribute(c || {});
        else if (Object.isString(b)) b = new Element(b, c);
        else b = new Element('div', b);
        if (a.parentNode) a.parentNode.replaceChild(b, a);
        b.appendChild(a);
        return b
    },
    inspect: function (d) {
        d = $(d);
        var e = '<' + d.tagName.toLowerCase();
        $H({
            'id': 'id',
            'className': 'class'
        }).each(function (a) {
            var b = a.first(),
                attribute = a.last();
            var c = (d[b] || '').toString();
            if (c) e += ' ' + attribute + '=' + c.inspect(true)
        });
        return e + '>'
    },
    recursivelyCollect: function (a, b) {
        a = $(a);
        var c = [];
        while (a = a[b]) if (a.nodeType == 1) c.push(Element.extend(a));
        return c
    },
    ancestors: function (a) {
        return $(a).recursivelyCollect('parentNode')
    },
    descendants: function (a) {
        return $(a).select("*")
    },
    firstDescendant: function (a) {
        a = $(a).firstChild;
        while (a && a.nodeType != 1) a = a.nextSibling;
        return $(a)
    },
    immediateDescendants: function (a) {
        if (!(a = $(a).firstChild)) return [];
        while (a && a.nodeType != 1) a = a.nextSibling;
        if (a) return [a].concat($(a).nextSiblings());
        return []
    },
    previousSiblings: function (a) {
        return $(a).recursivelyCollect('previousSibling')
    },
    nextSiblings: function (a) {
        return $(a).recursivelyCollect('nextSibling')
    },
    siblings: function (a) {
        a = $(a);
        return a.previousSiblings().reverse().concat(a.nextSiblings())
    },
    match: function (a, b) {
        if (Object.isString(b)) b = new Selector(b);
        return b.match($(a))
    },
    up: function (a, b, c) {
        a = $(a);
        if (arguments.length == 1) return $(a.parentNode);
        var d = a.ancestors();
        return Object.isNumber(b) ? d[b] : Selector.findElement(d, b, c)
    },
    down: function (a, b, c) {
        a = $(a);
        if (arguments.length == 1) return a.firstDescendant();
        return Object.isNumber(b) ? a.descendants()[b] : a.select(b)[c || 0]
    },
    previous: function (a, b, c) {
        a = $(a);
        if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(a));
        var d = a.previousSiblings();
        return Object.isNumber(b) ? d[b] : Selector.findElement(d, b, c)
    },
    next: function (a, b, c) {
        a = $(a);
        if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(a));
        var d = a.nextSiblings();
        return Object.isNumber(b) ? d[b] : Selector.findElement(d, b, c)
    },
    select: function () {
        var a = $A(arguments),
            element = $(a.shift());
        return Selector.findChildElements(element, a)
    },
    adjacent: function () {
        var a = $A(arguments),
            element = $(a.shift());
        return Selector.findChildElements(element.parentNode, a).without(element)
    },
    identify: function (a) {
        a = $(a);
        var b = a.readAttribute('id'),
            self = arguments.callee;
        if (b) return b;
        do {
            b = 'anonymous_element_' + self.counter++
        } while ($(b));
        a.writeAttribute('id', b);
        return b
    },
    readAttribute: function (a, b) {
        a = $(a);
        if (Prototype.Browser.IE) {
            var t = Element._attributeTranslations.read;
            if (t.values[b]) return t.values[b](a, b);
            if (t.names[b]) b = t.names[b];
            if (b.include(':')) {
                return (!a.attributes || !a.attributes[b]) ? null : a.attributes[b].value
            }
        }
        return a.getAttribute(b)
    },
    writeAttribute: function (a, b, c) {
        a = $(a);
        var d = {},
            t = Element._attributeTranslations.write;
        if (typeof b == 'object') d = b;
        else d[b] = Object.isUndefined(c) ? true : c;
        for (var e in d) {
            b = t.names[e] || e;
            c = d[e];
            if (t.values[e]) b = t.values[e](a, c);
            if (c === false || c === null) a.removeAttribute(b);
            else if (c === true) a.setAttribute(b, b);
            else a.setAttribute(b, c)
        }
        return a
    },
    getHeight: function (a) {
        return $(a).getDimensions().height
    },
    getWidth: function (a) {
        return $(a).getDimensions().width
    },
    classNames: function (a) {
        return new Element.ClassNames(a)
    },
    hasClassName: function (a, b) {
        if (!(a = $(a))) return;
        var c = a.className;
        return (c.length > 0 && (c == b || new RegExp("(^|\\s)" + b + "(\\s|$)").test(c)))
    },
    addClassName: function (a, b) {
        if (!(a = $(a))) return;
        if (!a.hasClassName(b)) a.className += (a.className ? ' ' : '') + b;
        return a
    },
    removeClassName: function (a, b) {
        if (!(a = $(a))) return;
        a.className = a.className.replace(new RegExp("(^|\\s+)" + b + "(\\s+|$)"), ' ').strip();
        return a
    },
    toggleClassName: function (a, b) {
        if (!(a = $(a))) return;
        return a[a.hasClassName(b) ? 'removeClassName' : 'addClassName'](b)
    },
    cleanWhitespace: function (a) {
        a = $(a);
        var b = a.firstChild;
        while (b) {
            var c = b.nextSibling;
            if (b.nodeType == 3 && !/\S/.test(b.nodeValue)) a.removeChild(b);
            b = c
        }
        return a
    },
    empty: function (a) {
        return $(a).innerHTML.blank()
    },
    descendantOf: function (b, c) {
        b = $(b), c = $(c);
        var d = c;
        if (b.compareDocumentPosition) return (b.compareDocumentPosition(c) & 8) === 8;
        if (b.sourceIndex && !Prototype.Browser.Opera) {
            var e = b.sourceIndex,
                a = c.sourceIndex,
                nextAncestor = c.nextSibling;
            if (!nextAncestor) {
                do {
                    c = c.parentNode
                } while (!(nextAncestor = c.nextSibling) && c.parentNode)
            }
            if (nextAncestor && nextAncestor.sourceIndex) return (e > a && e < nextAncestor.sourceIndex)
        }
        while (b = b.parentNode) if (b == d) return true;
        return false
    },
    scrollTo: function (a) {
        a = $(a);
        var b = a.cumulativeOffset();
        window.scrollTo(b[0], b[1]);
        return a
    },
    getStyle: function (a, b) {
        a = $(a);
        b = b == 'float' ? 'cssFloat' : b.camelize();
        var c = a.style[b];
        if (!c) {
            var d = document.defaultView.getComputedStyle(a, null);
            c = d ? d[b] : null
        }
        if (b == 'opacity') return c ? parseFloat(c) : 1.0;
        return c == 'auto' ? null : c
    },
    getOpacity: function (a) {
        return $(a).getStyle('opacity')
    },
    setStyle: function (a, b) {
        a = $(a);
        var c = a.style,
            match;
        if (Object.isString(b)) {
            a.style.cssText += ';' + b;
            return b.include('opacity') ? a.setOpacity(b.match(/opacity:\s*(\d?\.?\d*)/)[1]) : a
        }
        for (var d in b) if (d == 'opacity') a.setOpacity(b[d]);
        else c[(d == 'float' || d == 'cssFloat') ? (Object.isUndefined(c.styleFloat) ? 'cssFloat' : 'styleFloat') : d] = b[d];
        return a
    },
    setOpacity: function (a, b) {
        a = $(a);
        a.style.opacity = (b == 1 || b === '') ? '' : (b < 0.00001) ? 0 : b;
        return a
    },
    getDimensions: function (a) {
        a = $(a);
        var b = $(a).getStyle('display');
        if (b != 'none' && b != null) return {
            width: a.offsetWidth,
            height: a.offsetHeight
        };
        var c = a.style;
        var d = c.visibility;
        var e = c.position;
        var f = c.display;
        c.visibility = 'hidden';
        c.position = 'absolute';
        c.display = 'block';
        var g = a.clientWidth;
        var h = a.clientHeight;
        c.display = f;
        c.position = e;
        c.visibility = d;
        return {
            width: g,
            height: h
        }
    },
    makePositioned: function (a) {
        a = $(a);
        var b = Element.getStyle(a, 'position');
        if (b == 'static' || !b) {
            a._madePositioned = true;
            a.style.position = 'relative';
            if (window.opera) {
                a.style.top = 0;
                a.style.left = 0
            }
        }
        return a
    },
    undoPositioned: function (a) {
        a = $(a);
        if (a._madePositioned) {
            a._madePositioned = undefined;
            a.style.position = a.style.top = a.style.left = a.style.bottom = a.style.right = ''
        }
        return a
    },
    makeClipping: function (a) {
        a = $(a);
        if (a._overflow) return a;
        a._overflow = Element.getStyle(a, 'overflow') || 'auto';
        if (a._overflow !== 'hidden') a.style.overflow = 'hidden';
        return a
    },
    undoClipping: function (a) {
        a = $(a);
        if (!a._overflow) return a;
        a.style.overflow = a._overflow == 'auto' ? '' : a._overflow;
        a._overflow = null;
        return a
    },
    cumulativeOffset: function (a) {
        var b = 0,
            valueL = 0;
        do {
            b += a.offsetTop || 0;
            valueL += a.offsetLeft || 0;
            a = a.offsetParent
        } while (a);
        return Element._returnOffset(valueL, b)
    },
    positionedOffset: function (a) {
        var b = 0,
            valueL = 0;
        do {
            b += a.offsetTop || 0;
            valueL += a.offsetLeft || 0;
            a = a.offsetParent;
            if (a) {
                if (a.tagName == 'BODY') break;
                var p = Element.getStyle(a, 'position');
                if (p !== 'static') break
            }
        } while (a);
        return Element._returnOffset(valueL, b)
    },
    absolutize: function (a) {
        a = $(a);
        if (a.getStyle('position') == 'absolute') return;
        var b = a.positionedOffset();
        var c = b[1];
        var d = b[0];
        var e = a.clientWidth;
        var f = a.clientHeight;
        a._originalLeft = d - parseFloat(a.style.left || 0);
        a._originalTop = c - parseFloat(a.style.top || 0);
        a._originalWidth = a.style.width;
        a._originalHeight = a.style.height;
        a.style.position = 'absolute';
        a.style.top = c + 'px';
        a.style.left = d + 'px';
        a.style.width = e + 'px';
        a.style.height = f + 'px';
        return a
    },
    relativize: function (a) {
        a = $(a);
        if (a.getStyle('position') == 'relative') return;
        a.style.position = 'relative';
        var b = parseFloat(a.style.top || 0) - (a._originalTop || 0);
        var c = parseFloat(a.style.left || 0) - (a._originalLeft || 0);
        a.style.top = b + 'px';
        a.style.left = c + 'px';
        a.style.height = a._originalHeight;
        a.style.width = a._originalWidth;
        return a
    },
    cumulativeScrollOffset: function (a) {
        var b = 0,
            valueL = 0;
        do {
            b += a.scrollTop || 0;
            valueL += a.scrollLeft || 0;
            a = a.parentNode
        } while (a);
        return Element._returnOffset(valueL, b)
    },
    getOffsetParent: function (a) {
        if (a.offsetParent) return $(a.offsetParent);
        if (a == document.body) return $(a);
        while ((a = a.parentNode) && a != document.body) if (Element.getStyle(a, 'position') != 'static') return $(a);
        return $(document.body)
    },
    viewportOffset: function (a) {
        var b = 0,
            valueL = 0;
        var c = a;
        do {
            b += c.offsetTop || 0;
            valueL += c.offsetLeft || 0;
            if (c.offsetParent == document.body && Element.getStyle(c, 'position') == 'absolute') break
        } while (c = c.offsetParent);
        c = a;
        do {
            if (!Prototype.Browser.Opera || c.tagName == 'BODY') {
                b -= c.scrollTop || 0;
                valueL -= c.scrollLeft || 0
            }
        } while (c = c.parentNode);
        return Element._returnOffset(valueL, b)
    },
    clonePosition: function (a, b) {
        var c = Object.extend({
            setLeft: true,
            setTop: true,
            setWidth: true,
            setHeight: true,
            offsetTop: 0,
            offsetLeft: 0
        }, arguments[2] || {});
        b = $(b);
        var p = b.viewportOffset();
        a = $(a);
        var d = [0, 0];
        var e = null;
        if (Element.getStyle(a, 'position') == 'absolute') {
            e = a.getOffsetParent();
            d = e.viewportOffset()
        }
        if (e == document.body) {
            d[0] -= document.body.offsetLeft;
            d[1] -= document.body.offsetTop
        }
        if (c.setLeft) a.style.left = (p[0] - d[0] + c.offsetLeft) + 'px';
        if (c.setTop) a.style.top = (p[1] - d[1] + c.offsetTop) + 'px';
        if (c.setWidth) a.style.width = b.offsetWidth + 'px';
        if (c.setHeight) a.style.height = b.offsetHeight + 'px';
        return a
    }
};
Element.Methods.identify.counter = 1;
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 (d, e, f) {
        switch (f) {
        case 'left':
        case 'top':
        case 'right':
        case 'bottom':
            if (d(e, 'position') === 'static') return null;
        case 'height':
        case 'width':
            if (!Element.visible(e)) return null;
            var g = parseInt(d(e, f), 10);
            if (g !== e['offset' + f.capitalize()]) return g + 'px';
            var h;
            if (f === 'height') {
                h = ['border-top-width', 'padding-top', 'padding-bottom', 'border-bottom-width']
            } else {
                h = ['border-left-width', 'padding-left', 'padding-right', 'border-right-width']
            }
            return h.inject(g, function (a, b) {
                var c = d(e, b);
                return c === null ? a : a - parseInt(c, 10)
            }) + 'px';
        default:
            return d(e, f)
        }
    });
    Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(function (a, b, c) {
        if (c === 'title') return b.title;
        return a(b, c)
    })
} else if (Prototype.Browser.IE) {
    Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(function (a, b) {
        b = $(b);
        var c = b.getStyle('position');
        if (c !== 'static') return a(b);
        b.setStyle({
            position: 'relative'
        });
        var d = a(b);
        b.setStyle({
            position: c
        });
        return d
    });
    $w('positionedOffset viewportOffset').each(function (f) {
        Element.Methods[f] = Element.Methods[f].wrap(function (a, b) {
            b = $(b);
            var c = b.getStyle('position');
            if (c !== 'static') return a(b);
            var d = b.getOffsetParent();
            if (d && d.getStyle('position') === 'fixed') d.setStyle({
                zoom: 1
            });
            b.setStyle({
                position: 'relative'
            });
            var e = a(b);
            b.setStyle({
                position: c
            });
            return e
        })
    });
    Element.Methods.getStyle = function (a, b) {
        a = $(a);
        b = (b == 'float' || b == 'cssFloat') ? 'styleFloat' : b.camelize();
        var c = a.style[b];
        if (!c && a.currentStyle) c = a.currentStyle[b];
        if (b == 'opacity') {
            if (c = (a.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/)) if (c[1]) return parseFloat(c[1]) / 100;
            return 1.0
        }
        if (c == 'auto') {
            if ((b == 'width' || b == 'height') && (a.getStyle('display') != 'none')) return a['offset' + b.capitalize()] + 'px';
            return null
        }
        return c
    };
    Element.Methods.setOpacity = function (b, c) {
        function stripAlpha(a) {
            return a.replace(/alpha\([^\)]*\)/gi, '')
        }
        b = $(b);
        var d = b.currentStyle;
        if ((d && !d.hasLayout) || (!d && b.style.zoom == 'normal')) b.style.zoom = 1;
        var e = b.getStyle('filter'),
            style = b.style;
        if (c == 1 || c === '') {
            (e = stripAlpha(e)) ? style.filter = e : style.removeAttribute('filter');
            return b
        } else if (c < 0.00001) c = 0;
        style.filter = stripAlpha(e) + 'alpha(opacity=' + (c * 100) + ')';
        return b
    };
    Element._attributeTranslations = {
        read: {
            names: {
                'class': 'className',
                'for': 'htmlFor'
            },
            values: {
                _getAttr: function (a, b) {
                    return a.getAttribute(b, 2)
                },
                _getAttrNode: function (a, b) {
                    var c = a.getAttributeNode(b);
                    return c ? c.value : ""
                },
                _getEv: function (a, b) {
                    b = a.getAttribute(b);
                    return b ? b.toString().slice(23, -2) : null
                },
                _flag: function (a, b) {
                    return $(a).hasAttribute(b) ? b : null
                },
                style: function (a) {
                    return a.style.cssText.toLowerCase()
                },
                title: function (a) {
                    return a.title
                }
            }
        }
    };
    Element._attributeTranslations.write = {
        names: Object.extend({
            cellpadding: 'cellPadding',
            cellspacing: 'cellSpacing'
        }, Element._attributeTranslations.read.names),
        values: {
            checked: function (a, b) {
                a.checked = !! b
            },
            style: function (a, b) {
                a.style.cssText = b ? b : ''
            }
        }
    };
    Element._attributeTranslations.has = {};
    $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' + 'encType maxLength readOnly longDesc').each(function (a) {
        Element._attributeTranslations.write.names[a.toLowerCase()] = a;
        Element._attributeTranslations.has[a.toLowerCase()] = a
    });
    (function (v) {
        Object.extend(v, {
            href: v._getAttr,
            src: v._getAttr,
            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)
} else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
    Element.Methods.setOpacity = function (a, b) {
        a = $(a);
        a.style.opacity = (b == 1) ? 0.999999 : (b === '') ? '' : (b < 0.00001) ? 0 : b;
        return a
    }
} else if (Prototype.Browser.WebKit) {
    Element.Methods.setOpacity = function (a, b) {
        a = $(a);
        a.style.opacity = (b == 1 || b === '') ? '' : (b < 0.00001) ? 0 : b;
        if (b == 1) if (a.tagName == 'IMG' && a.width) {
            a.width++;
            a.width--
        } else try {
            var n = document.createTextNode(' ');
            a.appendChild(n);
            a.removeChild(n)
        } catch (e) {}
        return a
    };
    Element.Methods.cumulativeOffset = function (a) {
        var b = 0,
            valueL = 0;
        do {
            b += a.offsetTop || 0;
            valueL += a.offsetLeft || 0;
            if (a.offsetParent == document.body) if (Element.getStyle(a, 'position') == 'absolute') break;
            a = a.offsetParent
        } while (a);
        return Element._returnOffset(valueL, b)
    }
}
if (Prototype.Browser.IE || Prototype.Browser.Opera) {
    Element.Methods.update = function (b, c) {
        b = $(b);
        if (c && c.toElement) c = c.toElement();
        if (Object.isElement(c)) return b.update().insert(c);
        c = Object.toHTML(c);
        var d = b.tagName.toUpperCase();
        if (d in Element._insertionTranslations.tags) {
            $A(b.childNodes).each(function (a) {
                b.removeChild(a)
            });
            Element._getContentFromAnonymousElement(d, c.stripScripts()).each(function (a) {
                b.appendChild(a)
            })
        } else b.innerHTML = c.stripScripts();
        c.evalScripts.bind(c).defer();
        return b
    }
}
if ('outerHTML' in document.createElement('div')) {
    Element.Methods.replace = function (b, c) {
        b = $(b);
        if (c && c.toElement) c = c.toElement();
        if (Object.isElement(c)) {
            b.parentNode.replaceChild(c, b);
            return b
        }
        c = Object.toHTML(c);
        var d = b.parentNode,
            tagName = d.tagName.toUpperCase();
        if (Element._insertionTranslations.tags[tagName]) {
            var e = b.next();
            var f = Element._getContentFromAnonymousElement(tagName, c.stripScripts());
            d.removeChild(b);
            if (e) f.each(function (a) {
                d.insertBefore(a, e)
            });
            else f.each(function (a) {
                d.appendChild(a)
            })
        } else b.outerHTML = c.stripScripts();
        c.evalScripts.bind(c).defer();
        return b
    }
}
Element._returnOffset = function (l, t) {
    var a = [l, t];
    a.left = l;
    a.top = t;
    return a
};
Element._getContentFromAnonymousElement = function (a, b) {
    var c = new Element('div'),
        t = Element._insertionTranslations.tags[a];
    if (t) {
        c.innerHTML = t[0] + b + t[1];
        t[2].times(function () {
            c = c.firstChild
        })
    } else c.innerHTML = b;
    return $A(c.childNodes)
};
Element._insertionTranslations = {
    before: function (a, b) {
        a.parentNode.insertBefore(b, a)
    },
    top: function (a, b) {
        a.insertBefore(b, a.firstChild)
    },
    bottom: function (a, b) {
        a.appendChild(b)
    },
    after: function (a, b) {
        a.parentNode.insertBefore(b, a.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 () {
    Object.extend(this.tags, {
        THEAD: this.tags.TBODY,
        TFOOT: this.tags.TBODY,
        TH: this.tags.TD
    })
}).call(Element._insertionTranslations);
Element.Methods.Simulated = {
    hasAttribute: function (a, b) {
        b = Element._attributeTranslations.has[b] || b;
        var c = $(a).getAttributeNode(b);
        return c && c.specified
    }
};
Element.Methods.ByTag = {};
Object.extend(Element, Element.Methods);
if (!Prototype.BrowserFeatures.ElementExtensions && document.createElement('div').__proto__) {
    window.HTMLElement = {};
    window.HTMLElement.prototype = document.createElement('div').__proto__;
    Prototype.BrowserFeatures.ElementExtensions = true
}
Element.extend = (function () {
    if (Prototype.BrowserFeatures.SpecificElementExtensions) return Prototype.K;
    var c = {},
        ByTag = Element.Methods.ByTag;
    var d = Object.extend(function (a) {
        if (!a || a._extendedByPrototype || a.nodeType != 1 || a == window) return a;
        var b = Object.clone(c),
            tagName = a.tagName,
            property, value;
        if (ByTag[tagName]) Object.extend(b, ByTag[tagName]);
        for (property in b) {
            value = b[property];
            if (Object.isFunction(value) && !(property in a)) a[property] = value.methodize()
        }
        a._extendedByPrototype = Prototype.emptyFunction;
        return a
    }, {
        refresh: function () {
            if (!Prototype.BrowserFeatures.ElementExtensions) {
                Object.extend(c, Element.Methods);
                Object.extend(c, Element.Methods.Simulated)
            }
        }
    });
    d.refresh();
    return d
})();
Element.hasAttribute = function (a, b) {
    if (a.hasAttribute) return a.hasAttribute(b);
    return Element.Methods.Simulated.hasAttribute(a, b)
};
Element.addMethods = function (f) {
    var F = Prototype.BrowserFeatures,
        T = Element.Methods.ByTag;
    if (!f) {
        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 g = f;
        f = arguments[1]
    }
    if (!g) Object.extend(Element.Methods, f || {});
    else {
        if (Object.isArray(g)) g.each(extend);
        else extend(g)
    }
    function extend(a) {
        a = a.toUpperCase();
        if (!Element.Methods.ByTag[a]) Element.Methods.ByTag[a] = {};
        Object.extend(Element.Methods.ByTag[a], f)
    }
    function copy(a, b, c) {
        c = c || false;
        for (var d in a) {
            var e = a[d];
            if (!Object.isFunction(e)) continue;
            if (!c || !(d in b)) b[d] = e.methodize()
        }
    }
    function findDOMClass(a) {
        var b;
        var c = {
            "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 (c[a]) b = 'HTML' + c[a] + 'Element';
        if (window[b]) return window[b];
        b = 'HTML' + a + 'Element';
        if (window[b]) return window[b];
        b = 'HTML' + a.capitalize() + 'Element';
        if (window[b]) return window[b];
        window[b] = {};
        window[b].prototype = document.createElement(a).__proto__;
        return window[b]
    }
    if (F.ElementExtensions) {
        copy(Element.Methods, HTMLElement.prototype);
        copy(Element.Methods.Simulated, HTMLElement.prototype, true)
    }
    if (F.SpecificElementExtensions) {
        for (var h in Element.Methods.ByTag) {
            var i = findDOMClass(h);
            if (Object.isUndefined(i)) continue;
            copy(T[h], i.prototype)
        }
    }
    Object.extend(Element, Element.Methods);
    delete Element.ByTag;
    if (Element.extend.refresh) Element.extend.refresh();
    Element.cache = {}
};
document.viewport = {
    getDimensions: function () {
        var a = {};
        var B = Prototype.Browser;
        $w('width height').each(function (d) {
            var D = d.capitalize();
            a[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] : (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D]
        });
        return a
    },
    getWidth: function () {
        return this.getDimensions().width
    },
    getHeight: function () {
        return this.getDimensions().height
    },
    getScrollOffsets: function () {
        return Element._returnOffset(window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft, window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop)
    }
};
var Selector = Class.create({
    initialize: function (a) {
        this.expression = a.strip();
        this.compileMatcher()
    },
    shouldUseXPath: 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(this.expression)) return false;
        return true
    },
    compileMatcher: function () {
        if (this.shouldUseXPath()) return this.compileXPathMatcher();
        var e = this.expression,
            ps = Selector.patterns,
            h = Selector.handlers,
            c = Selector.criteria,
            le, p, m;
        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 in ps) {
                p = ps[i];
                if (m = e.match(p)) {
                    this.matcher.push(Object.isFunction(c[i]) ? c[i](m) : new Template(c[i]).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;
        if (Selector._cache[e]) {
            this.xpath = Selector._cache[e];
            return
        }
        this.matcher = ['.//*'];
        while (e && le != e && (/\S/).test(e)) {
            le = e;
            for (var i in ps) {
                if (m = e.match(ps[i])) {
                    this.matcher.push(Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m));
                    e = e.replace(m[0], '');
                    break
                }
            }
        }
        this.xpath = this.matcher.join('');
        Selector._cache[this.expression] = this.xpath
    },
    findElements: function (a) {
        a = a || document;
        if (this.xpath) return document._getElementsByXPath(this.xpath, a);
        return this.matcher(a)
    },
    match: function (a) {
        this.tokens = [];
        var e = this.expression,
            ps = Selector.patterns,
            as = Selector.assertions;
        var b, p, m;
        while (e && b !== e && (/\S/).test(e)) {
            b = e;
            for (var i in ps) {
                p = ps[i];
                if (m = e.match(p)) {
                    if (as[i]) {
                        this.tokens.push([i, Object.clone(m)]);
                        e = e.replace(m[0], '')
                    } else {
                        return this.findElements(document).include(a)
                    }
                }
            }
        }
        var c = true,
            name, matches;
        for (var i = 0, token; token = this.tokens[i]; i++) {
            name = token[0], matches = token[1];
            if (!Selector.assertions[name](a, matches)) {
                c = false;
                break
            }
        }
        return c
    },
    toString: function () {
        return this.expression
    },
    inspect: function () {
        return "#<Selector:" + this.expression.inspect() + ">"
    }
});
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 or translate(text(), ' \t\r\n', '') = '')]",
            'checked': "[@checked]",
            'disabled': "[@disabled]",
            'enabled': "[not(@disabled)]",
            'not': function (m) {
                var e = m[6],
                    p = Selector.patterns,
                    x = Selector.xpath,
                    le, v;
                var a = [];
                while (e && le != e && (/\S/).test(e)) {
                    le = e;
                    for (var i in p) {
                        if (m = e.match(p[i])) {
                            v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
                            a.push("(" + v.substring(1, v.length - 1) + ")");
                            e = e.replace(m[0], '');
                            break
                        }
                    }
                }
                return "[not(" + a.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 (c, m) {
                var d, formula = m[6],
                    predicate;
                if (formula == 'even') formula = '2n+0';
                if (formula == 'odd') formula = '2n+1';
                if (d = formula.match(/^(\d+)$/)) return '[' + c + "= " + d[1] + ']';
                if (d = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) {
                    if (d[1] == "-") d[1] = -1;
                    var a = d[1] ? Number(d[1]) : 1;
                    var b = d[2] ? Number(d[2]) : 0;
                    predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " + "((#{fragment} - #{b}) div #{a} >= 0)]";
                    return new Template(predicate).evaluate({
                        fragment: c,
                        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: {
        laterSibling: /^\s*~\s*/,
        child: /^\s*>\s*/,
        adjacent: /^\s*\+\s*/,
        descendant: /^\s/,
        tagName: /^\s*(\*|[\w\-]+)(\b|$)?/,
        id: /^#([\w\-\*]+)(\b|$)/,
        className: /^\.([\w\-\*]+)(\b|$)/,
        pseudo: /^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
        attrPresence: /^\[([\w]+)\]/,
        attr: /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
    },
    assertions: {
        tagName: function (a, b) {
            return b[1].toUpperCase() == a.tagName.toUpperCase()
        },
        className: function (a, b) {
            return Element.hasClassName(a, b[1])
        },
        id: function (a, b) {
            return a.id === b[1]
        },
        attrPresence: function (a, b) {
            return Element.hasAttribute(a, b[1])
        },
        attr: function (a, b) {
            var c = Element.readAttribute(a, b[1]);
            return c && Selector.operators[b[2]](c, b[5] || b[6])
        }
    },
    handlers: {
        concat: function (a, b) {
            for (var i = 0, node; node = b[i]; i++) a.push(node);
            return a
        },
        mark: function (a) {
            var b = Prototype.emptyFunction;
            for (var i = 0, node; node = a[i]; i++) node._countedByPrototype = b;
            return a
        },
        unmark: function (a) {
            for (var i = 0, node; node = a[i]; i++) node._countedByPrototype = undefined;
            return a
        },
        index: function (a, b, c) {
            a._countedByPrototype = Prototype.emptyFunction;
            if (b) {
                for (var d = a.childNodes, i = d.length - 1, j = 1; i >= 0; i--) {
                    var e = d[i];
                    if (e.nodeType == 1 && (!c || e._countedByPrototype)) e.nodeIndex = j++
                }
            } else {
                for (var i = 0, j = 1, d = a.childNodes; e = d[i]; i++) if (e.nodeType == 1 && (!c || e._countedByPrototype)) e.nodeIndex = j++
            }
        },
        unique: function (a) {
            if (a.length == 0) return a;
            var b = [],
                n;
            for (var i = 0, l = a.length; i < l; i++) if (!(n = a[i])._countedByPrototype) {
                n._countedByPrototype = Prototype.emptyFunction;
                b.push(Element.extend(n))
            }
            return Selector.handlers.unmark(b)
        },
        descendant: function (a) {
            var h = Selector.handlers;
            for (var i = 0, results = [], node; node = a[i]; i++) h.concat(results, node.getElementsByTagName('*'));
            return results
        },
        child: function (a) {
            var h = Selector.handlers;
            for (var i = 0, results = [], node; node = a[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 (a) {
            for (var i = 0, results = [], node; node = a[i]; i++) {
                var b = this.nextElementSibling(node);
                if (b) results.push(b)
            }
            return results
        },
        laterSibling: function (a) {
            var h = Selector.handlers;
            for (var i = 0, results = [], node; node = a[i]; i++) h.concat(results, Element.nextSiblings(node));
            return results
        },
        nextElementSibling: function (a) {
            while (a = a.nextSibling) if (a.nodeType == 1) return a;
            return null
        },
        previousElementSibling: function (a) {
            while (a = a.previousSibling) if (a.nodeType == 1) return a;
            return null
        },
        tagName: function (a, b, c, d) {
            var e = c.toUpperCase();
            var f = [],
                h = Selector.handlers;
            if (a) {
                if (d) {
                    if (d == "descendant") {
                        for (var i = 0, node; node = a[i]; i++) h.concat(f, node.getElementsByTagName(c));
                        return f
                    } else a = this[d](a);
                    if (c == "*") return a
                }
                for (var i = 0, node; node = a[i]; i++) if (node.tagName.toUpperCase() === e) f.push(node);
                return f
            } else return b.getElementsByTagName(c)
        },
        id: function (a, b, c, d) {
            var e = $(c),
                h = Selector.handlers;
            if (!e) return [];
            if (!a && b == document) return [e];
            if (a) {
                if (d) {
                    if (d == 'child') {
                        for (var i = 0, node; node = a[i]; i++) if (e.parentNode == node) return [e]
                    } else if (d == 'descendant') {
                        for (var i = 0, node; node = a[i]; i++) if (Element.descendantOf(e, node)) return [e]
                    } else if (d == 'adjacent') {
                        for (var i = 0, node; node = a[i]; i++) if (Selector.handlers.previousElementSibling(e) == node) return [e]
                    } else a = h[d](a)
                }
                for (var i = 0, node; node = a[i]; i++) if (node == e) return [e];
                return []
            }
            return (e && Element.descendantOf(e, b)) ? [e] : []
        },
        className: function (a, b, c, d) {
            if (a && d) a = this[d](a);
            return Selector.handlers.byClassName(a, b, c)
        },
        byClassName: function (a, b, c) {
            if (!a) a = Selector.handlers.descendant([b]);
            var d = ' ' + c + ' ';
            for (var i = 0, results = [], node, nodeClassName; node = a[i]; i++) {
                nodeClassName = node.className;
                if (nodeClassName.length == 0) continue;
                if (nodeClassName == c || (' ' + nodeClassName + ' ').include(d)) results.push(node)
            }
            return results
        },
        attrPresence: function (a, b, c, d) {
            if (!a) a = b.getElementsByTagName("*");
            if (a && d) a = this[d](a);
            var e = [];
            for (var i = 0, node; node = a[i]; i++) if (Element.hasAttribute(node, c)) e.push(node);
            return e
        },
        attr: function (a, b, c, d, e, f) {
            if (!a) a = b.getElementsByTagName("*");
            if (a && f) a = this[f](a);
            var g = Selector.operators[e],
                results = [];
            for (var i = 0, node; node = a[i]; i++) {
                var h = Element.readAttribute(node, c);
                if (h === null) continue;
                if (g(h, d)) results.push(node)
            }
            return results
        },
        pseudo: function (a, b, c, d, e) {
            if (a && e) a = this[e](a);
            if (!a) a = d.getElementsByTagName("*");
            return Selector.pseudos[b](a, c, d)
        }
    },
    pseudos: {
        'first-child': function (a, b, c) {
            for (var i = 0, results = [], node; node = a[i]; i++) {
                if (Selector.handlers.previousElementSibling(node)) continue;
                results.push(node)
            }
            return results
        },
        'last-child': function (a, b, c) {
            for (var i = 0, results = [], node; node = a[i]; i++) {
                if (Selector.handlers.nextElementSibling(node)) continue;
                results.push(node)
            }
            return results
        },
        'only-child': function (a, b, c) {
            var h = Selector.handlers;
            for (var i = 0, results = [], node; node = a[i]; i++) if (!h.previousElementSibling(node) && !h.nextElementSibling(node)) results.push(node);
            return results
        },
        'nth-child': function (a, b, c) {
            return Selector.pseudos.nth(a, b, c)
        },
        'nth-last-child': function (a, b, c) {
            return Selector.pseudos.nth(a, b, c, true)
        },
        'nth-of-type': function (a, b, c) {
            return Selector.pseudos.nth(a, b, c, false, true)
        },
        'nth-last-of-type': function (a, b, c) {
            return Selector.pseudos.nth(a, b, c, true, true)
        },
        'first-of-type': function (a, b, c) {
            return Selector.pseudos.nth(a, "1", c, false, true)
        },
        'last-of-type': function (a, b, c) {
            return Selector.pseudos.nth(a, "1", c, true, true)
        },
        'only-of-type': function (a, b, c) {
            var p = Selector.pseudos;
            return p['last-of-type'](p['first-of-type'](a, b, c), b, c)
        },
        getIndices: function (a, b, d) {
            if (a == 0) return b > 0 ? [b] : [];
            return $R(1, d).inject([], function (c, i) {
                if (0 == (i - b) % a && (i - b) / a >= 0) c.push(i);
                return c
            })
        },
        nth: function (c, d, e, f, g) {
            if (c.length == 0) return [];
            if (d == 'even') d = '2n+0';
            if (d == 'odd') d = '2n+1';
            var h = Selector.handlers,
                results = [],
                indexed = [],
                m;
            h.mark(c);
            for (var i = 0, node; node = c[i]; i++) {
                if (!node.parentNode._countedByPrototype) {
                    h.index(node.parentNode, f, g);
                    indexed.push(node.parentNode)
                }
            }
            if (d.match(/^\d+$/)) {
                d = Number(d);
                for (var i = 0, node; node = c[i]; i++) if (node.nodeIndex == d) results.push(node)
            } else if (m = d.match(/^(-?\d*)?n(([+-])(\d+))?/)) {
                if (m[1] == "-") m[1] = -1;
                var a = m[1] ? Number(m[1]) : 1;
                var b = m[2] ? Number(m[2]) : 0;
                var k = Selector.pseudos.getIndices(a, b, c.length);
                for (var i = 0, node, l = k.length; node = c[i]; i++) {
                    for (var j = 0; j < l; j++) if (node.nodeIndex == k[j]) results.push(node)
                }
            }
            h.unmark(c);
            h.unmark(indexed);
            return results
        },
        'empty': function (a, b, c) {
            for (var i = 0, results = [], node; node = a[i]; i++) {
                if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
                results.push(node)
            }
            return results
        },
        'not': function (a, b, c) {
            var h = Selector.handlers,
                selectorType, m;
            var d = new Selector(b).findElements(c);
            h.mark(d);
            for (var i = 0, results = [], node; node = a[i]; i++) if (!node._countedByPrototype) results.push(node);
            h.unmark(d);
            return results
        },
        'enabled': function (a, b, c) {
            for (var i = 0, results = [], node; node = a[i]; i++) if (!node.disabled) results.push(node);
            return results
        },
        'disabled': function (a, b, c) {
            for (var i = 0, results = [], node; node = a[i]; i++) if (node.disabled) results.push(node);
            return results
        },
        'checked': function (a, b, c) {
            for (var i = 0, results = [], node; node = a[i]; i++) if (node.checked) results.push(node);
            return results
        }
    },
    operators: {
        '=': function (a, v) {
            return a == v
        },
        '!=': function (a, v) {
            return a != v
        },
        '^=': function (a, v) {
            return a.startsWith(v)
        },
        '$=': function (a, v) {
            return a.endsWith(v)
        },
        '*=': function (a, v) {
            return a.include(v)
        },
        '~=': function (a, v) {
            return (' ' + a + ' ').include(' ' + v + ' ')
        },
        '|=': function (a, v) {
            return ('-' + a.toUpperCase() + '-').include('-' + v.toUpperCase() + '-')
        }
    },
    split: function (a) {
        var b = [];
        a.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function (m) {
            b.push(m[1].strip())
        });
        return b
    },
    matchElements: function (a, b) {
        var c = $$(b),
            h = Selector.handlers;
        h.mark(c);
        for (var i = 0, results = [], element; element = a[i]; i++) if (element._countedByPrototype) results.push(element);
        h.unmark(c);
        return results
    },
    findElement: function (a, b, c) {
        if (Object.isNumber(b)) {
            c = b;
            b = false
        }
        return Selector.matchElements(a, b || '*')[c || 0]
    },
    findChildElements: function (a, b) {
        b = Selector.split(b.join(','));
        var c = [],
            h = Selector.handlers;
        for (var i = 0, l = b.length, selector; i < l; i++) {
            selector = new Selector(b[i].strip());
            h.concat(c, selector.findElements(a))
        }
        return (l > 1) ? h.unique(c) : c
    }
});
if (Prototype.Browser.IE) {
    Object.extend(Selector.handlers, {
        concat: function (a, b) {
            for (var i = 0, node; node = b[i]; i++) if (node.tagName !== "!") a.push(node);
            return a
        },
        unmark: function (a) {
            for (var i = 0, node; node = a[i]; i++) node.removeAttribute('_countedByPrototype');
            return a
        }
    })
}
function $$() {
    return Selector.findChildElements(document, $A(arguments))
}
var Form = {
    reset: function (a) {
        $(a).reset();
        return a
    },
    serializeElements: function (c, d) {
        if (typeof d != 'object') d = {
            hash: !! d
        };
        else if (Object.isUndefined(d.hash)) d.hash = true;
        var e, value, submitted = false,
            submit = d.submit;
        var f = c.inject({}, function (a, b) {
            if (!b.disabled && b.name) {
                e = b.name;
                value = $(b).getValue();
                if (value != null && (b.type != 'submit' || (!submitted && submit !== false && (!submit || e == submit) && (submitted = true)))) {
                    if (e in a) {
                        if (!Object.isArray(a[e])) a[e] = [a[e]];
                        a[e].push(value)
                    } else a[e] = value
                }
            }
            return a
        });
        return d.hash ? f : Object.toQueryString(f)
    }
};
Form.Methods = {
    serialize: function (a, b) {
        return Form.serializeElements(Form.getElements(a), b)
    },
    getElements: function (c) {
        return $A($(c).getElementsByTagName('*')).inject([], function (a, b) {
            if (Form.Element.Serializers[b.tagName.toLowerCase()]) a.push(Element.extend(b));
            return a
        })
    },
    getInputs: function (a, b, c) {
        a = $(a);
        var d = a.getElementsByTagName('input');
        if (!b && !c) return $A(d).map(Element.extend);
        for (var i = 0, matchingInputs = [], length = d.length; i < length; i++) {
            var e = d[i];
            if ((b && e.type != b) || (c && e.name != c)) continue;
            matchingInputs.push(Element.extend(e))
        }
        return matchingInputs
    },
    disable: function (a) {
        a = $(a);
        Form.getElements(a).invoke('disable');
        return a
    },
    enable: function (a) {
        a = $(a);
        Form.getElements(a).invoke('enable');
        return a
    },
    findFirstElement: function (b) {
        var c = $(b).getElements().findAll(function (a) {
            return 'hidden' != a.type && !a.disabled
        });
        var d = c.findAll(function (a) {
            return a.hasAttribute('tabIndex') && a.tabIndex >= 0
        }).sortBy(function (a) {
            return a.tabIndex
        }).first();
        return d ? d : c.find(function (a) {
            return ['input', 'select', 'textarea'].include(a.tagName.toLowerCase())
        })
    },
    focusFirstElement: function (a) {
        a = $(a);
        a.findFirstElement().activate();
        return a
    },
    request: function (a, b) {
        a = $(a), b = Object.clone(b || {});
        var c = b.parameters,
            action = a.readAttribute('action') || '';
        if (action.blank()) action = window.location.href;
        b.parameters = a.serialize(true);
        if (c) {
            if (Object.isString(c)) c = c.toQueryParams();
            Object.extend(b.parameters, c)
        }
        if (a.hasAttribute('method') && !b.method) b.method = a.method;
        return new Ajax.Request(action, b)
    }
};
Form.Element = {
    focus: function (a) {
        $(a).focus();
        return a
    },
    select: function (a) {
        $(a).select();
        return a
    }
};
Form.Element.Methods = {
    serialize: function (a) {
        a = $(a);
        if (!a.disabled && a.name) {
            var b = a.getValue();
            if (b != undefined) {
                var c = {};
                c[a.name] = b;
                return Object.toQueryString(c)
            }
        }
        return ''
    },
    getValue: function (a) {
        a = $(a);
        var b = a.tagName.toLowerCase();
        return Form.Element.Serializers[b](a)
    },
    setValue: function (a, b) {
        a = $(a);
        var c = a.tagName.toLowerCase();
        Form.Element.Serializers[c](a, b);
        return a
    },
    clear: function (a) {
        $(a).value = '';
        return a
    },
    present: function (a) {
        return $(a).value != ''
    },
    activate: function (a) {
        a = $(a);
        try {
            a.focus();
            if (a.select && (a.tagName.toLowerCase() != 'input' || !['button', 'reset', 'submit'].include(a.type))) a.select()
        } catch (e) {}
        return a
    },
    disable: function (a) {
        a = $(a);
        a.blur();
        a.disabled = true;
        return a
    },
    enable: function (a) {
        a = $(a);
        a.disabled = false;
        return a
    }
};
var Field = Form.Element;
var $F = Form.Element.Methods.getValue;
Form.Element.Serializers = {
    input: function (a, b) {
        switch (a.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
            return Form.Element.Serializers.inputSelector(a, b);
        default:
            return Form.Element.Serializers.textarea(a, b)
        }
    },
    inputSelector: function (a, b) {
        if (Object.isUndefined(b)) return a.checked ? a.value : null;
        else a.checked = !! b
    },
    textarea: function (a, b) {
        if (Object.isUndefined(b)) return a.value;
        else a.value = b
    },
    select: function (a, b) {
        if (Object.isUndefined(b)) return this[a.type == 'select-one' ? 'selectOne' : 'selectMany'](a);
        else {
            var c, value, single = !Object.isArray(b);
            for (var i = 0, length = a.length; i < length; i++) {
                c = a.options[i];
                value = this.optionValue(c);
                if (single) {
                    if (value == b) {
                        c.selected = true;
                        return
                    }
                } else c.selected = b.include(value)
            }
        }
    },
    selectOne: function (a) {
        var b = a.selectedIndex;
        return b >= 0 ? this.optionValue(a.options[b]) : null
    },
    selectMany: function (a) {
        var b, length = a.length;
        if (!length) return null;
        for (var i = 0, b = []; i < length; i++) {
            var c = a.options[i];
            if (c.selected) b.push(this.optionValue(c))
        }
        return b
    },
    optionValue: function (a) {
        return Element.extend(a).hasAttribute('value') ? a.value : a.text
    }
};
Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
    initialize: function ($super, b, c, d) {
        $super(d, c);
        this.element = $(b);
        this.lastValue = this.getValue()
    },
    execute: function () {
        var a = this.getValue();
        if (Object.isString(this.lastValue) && Object.isString(a) ? this.lastValue != a : String(this.lastValue) != String(a)) {
            this.callback(this.element, a);
            this.lastValue = a
        }
    }
});
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 (a, b) {
        this.element = $(a);
        this.callback = b;
        this.lastValue = this.getValue();
        if (this.element.tagName.toLowerCase() == 'form') this.registerFormCallbacks();
        else this.registerCallback(this.element)
    },
    onElementEvent: function () {
        var a = this.getValue();
        if (this.lastValue != a) {
            this.callback(this.element, a);
            this.lastValue = a
        }
    },
    registerFormCallbacks: function () {
        Form.getElements(this.element).each(this.registerCallback, this)
    },
    registerCallback: function (a) {
        if (a.type) {
            switch (a.type.toLowerCase()) {
            case 'checkbox':
            case 'radio':
                Event.observe(a, 'click', this.onElementEvent.bind(this));
                break;
            default:
                Event.observe(a, '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)
    }
});
if (!window.Event) var Event = {};
Object.extend(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: {},
    relatedTarget: function (a) {
        var b;
        switch (a.type) {
        case 'mouseover':
            b = a.fromElement;
            break;
        case 'mouseout':
            b = a.toElement;
            break;
        default:
            return null
        }
        return Element.extend(b)
    }
});
Event.Methods = (function () {
    var e;
    if (Prototype.Browser.IE) {
        var f = {
            0: 1,
            1: 4,
            2: 2
        };
        e = function (a, b) {
            return a.button == f[b]
        }
    } else if (Prototype.Browser.WebKit) {
        e = function (a, b) {
            switch (b) {
            case 0:
                return a.which == 1 && !a.metaKey;
            case 1:
                return a.which == 1 && a.metaKey;
            default:
                return false
            }
        }
    } else {
        e = function (a, b) {
            return a.which ? (a.which === b + 1) : (a.button === b)
        }
    }
    return {
        isLeftClick: function (a) {
            return e(a, 0)
        },
        isMiddleClick: function (a) {
            return e(a, 1)
        },
        isRightClick: function (a) {
            return e(a, 2)
        },
        element: function (a) {
            var b = Event.extend(a).target;
            return Element.extend(b.nodeType == Node.TEXT_NODE ? b.parentNode : b)
        },
        findElement: function (a, b) {
            var c = Event.element(a);
            if (!b) return c;
            var d = [c].concat(c.ancestors());
            return Selector.findElement(d, b, 0)
        },
        pointer: function (a) {
            return {
                x: a.pageX || (a.clientX + (document.documentElement.scrollLeft || document.body.scrollLeft)),
                y: a.pageY || (a.clientY + (document.documentElement.scrollTop || document.body.scrollTop))
            }
        },
        pointerX: function (a) {
            return Event.pointer(a).x
        },
        pointerY: function (a) {
            return Event.pointer(a).y
        },
        stop: function (a) {
            Event.extend(a);
            a.preventDefault();
            a.stopPropagation();
            a.stopped = true
        }
    }
})();
Event.extend = (function () {
    var c = Object.keys(Event.Methods).inject({}, function (m, a) {
        m[a] = Event.Methods[a].methodize();
        return m
    });
    if (Prototype.Browser.IE) {
        Object.extend(c, {
            stopPropagation: function () {
                this.cancelBubble = true
            },
            preventDefault: function () {
                this.returnValue = false
            },
            inspect: function () {
                return "[object Event]"
            }
        });
        return function (a) {
            if (!a) return false;
            if (a._extendedByPrototype) return a;
            a._extendedByPrototype = Prototype.emptyFunction;
            var b = Event.pointer(a);
            Object.extend(a, {
                target: a.srcElement,
                relatedTarget: Event.relatedTarget(a),
                pageX: b.x,
                pageY: b.y
            });
            return Object.extend(a, c)
        }
    } else {
        Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
        Object.extend(Event.prototype, c);
        return Prototype.K
    }
})();
Object.extend(Event, (function () {
    var h = Event.cache;

    function getEventID(a) {
        if (a._prototypeEventID) return a._prototypeEventID[0];
        arguments.callee.id = arguments.callee.id || 1;
        return a._prototypeEventID = [++arguments.callee.id]
    }
    function getDOMEventName(a) {
        if (a && a.include(':')) return "dataavailable";
        return a
    }
    function getCacheForID(a) {
        return h[a] = h[a] || {}
    }
    function getWrappersForEventName(a, b) {
        var c = getCacheForID(a);
        return c[b] = c[b] || []
    }
    function createWrapper(b, d, e) {
        var f = getEventID(b);
        var c = getWrappersForEventName(f, d);
        if (c.pluck("handler").include(e)) return false;
        var g = function (a) {
            if (!Event || !Event.extend || (a.eventName && a.eventName != d)) return false;
            Event.extend(a);
            e.call(b, a)
        };
        g.handler = e;
        c.push(g);
        return g
    }
    function findWrapper(b, d, e) {
        var c = getWrappersForEventName(b, d);
        return c.find(function (a) {
            return a.handler == e
        })
    }
    function destroyWrapper(a, b, d) {
        var c = getCacheForID(a);
        if (!c[b]) return false;
        c[b] = c[b].without(findWrapper(a, b, d))
    }
    function destroyCache() {
        for (var a in h) for (var b in h[a]) h[a][b] = null
    }
    if (window.attachEvent) {
        window.attachEvent("onunload", destroyCache)
    }
    return {
        observe: function (a, b, c) {
            a = $(a);
            var d = getDOMEventName(b);
            var e = createWrapper(a, b, c);
            if (!e) return a;
            if (a.addEventListener) {
                a.addEventListener(d, e, false)
            } else {
                a.attachEvent("on" + d, e)
            }
            return a
        },
        stopObserving: function (b, c, d) {
            b = $(b);
            var e = getEventID(b),
                name = getDOMEventName(c);
            if (!d && c) {
                getWrappersForEventName(e, c).each(function (a) {
                    b.stopObserving(c, a.handler)
                });
                return b
            } else if (!c) {
                Object.keys(getCacheForID(e)).each(function (a) {
                    b.stopObserving(a)
                });
                return b
            }
            var f = findWrapper(e, c, d);
            if (!f) return b;
            if (b.removeEventListener) {
                b.removeEventListener(name, f, false)
            } else {
                b.detachEvent("on" + name, f)
            }
            destroyWrapper(e, c, d);
            return b
        },
        fire: function (a, b, c) {
            a = $(a);
            if (a == document && document.createEvent && !a.dispatchEvent) a = document.documentElement;
            var d;
            if (document.createEvent) {
                d = document.createEvent("HTMLEvents");
                d.initEvent("dataavailable", true, true)
            } else {
                d = document.createEventObject();
                d.eventType = "ondataavailable"
            }
            d.eventName = b;
            d.memo = c || {};
            if (document.createEvent) {
                a.dispatchEvent(d)
            } else {
                a.fireEvent(d.eventType, d)
            }
            return Event.extend(d)
        }
    }
})());
Object.extend(Event, Event.Methods);
Element.addMethods({
    fire: Event.fire,
    observe: Event.observe,
    stopObserving: Event.stopObserving
});
Object.extend(document, {
    fire: Element.Methods.fire.methodize(),
    observe: Element.Methods.observe.methodize(),
    stopObserving: Element.Methods.stopObserving.methodize(),
    loaded: false
});
(function () {
    var a;

    function fireContentLoadedEvent() {
        if (document.loaded) return;
        if (a) window.clearInterval(a);
        document.fire("dom:loaded");
        document.loaded = true
    }
    if (document.addEventListener) {
        if (Prototype.Browser.WebKit) {
            a = window.setInterval(function () {
                if (/loaded|complete/.test(document.readyState)) fireContentLoadedEvent()
            }, 0);
            Event.observe(window, "load", fireContentLoadedEvent)
        } else {
            document.addEventListener("DOMContentLoaded", fireContentLoadedEvent, false)
        }
    } else {
        document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
        $("__onDOMContentLoaded").onreadystatechange = function () {
            if (this.readyState == "complete") {
                this.onreadystatechange = null;
                fireContentLoadedEvent()
            }
        }
    }
})();
Hash.toQueryString = Object.toQueryString;
var Toggle = {
    display: Element.toggle
};
Element.Methods.childOf = Element.Methods.descendantOf;
var Insertion = {
    Before: function (a, b) {
        return Element.insert(a, {
            before: b
        })
    },
    Top: function (a, b) {
        return Element.insert(a, {
            top: b
        })
    },
    Bottom: function (a, b) {
        return Element.insert(a, {
            bottom: b
        })
    },
    After: function (a, b) {
        return Element.insert(a, {
            after: b
        })
    }
};
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 (a, x, y) {
        if (this.includeScrollOffsets) return this.withinIncludingScrolloffsets(a, x, y);
        this.xcomp = x;
        this.ycomp = y;
        this.offset = Element.cumulativeOffset(a);
        return (y >= this.offset[1] && y < this.offset[1] + a.offsetHeight && x >= this.offset[0] && x < this.offset[0] + a.offsetWidth)
    },
    withinIncludingScrolloffsets: function (a, x, y) {
        var b = Element.cumulativeScrollOffset(a);
        this.xcomp = x + b[0] - this.deltaX;
        this.ycomp = y + b[1] - this.deltaY;
        this.offset = Element.cumulativeOffset(a);
        return (this.ycomp >= this.offset[1] && this.ycomp < this.offset[1] + a.offsetHeight && this.xcomp >= this.offset[0] && this.xcomp < this.offset[0] + a.offsetWidth)
    },
    overlap: function (a, b) {
        if (!a) return 0;
        if (a == 'vertical') return ((this.offset[1] + b.offsetHeight) - this.ycomp) / b.offsetHeight;
        if (a == 'horizontal') return ((this.offset[0] + b.offsetWidth) - this.xcomp) / b.offsetWidth
    },
    cumulativeOffset: Element.Methods.cumulativeOffset,
    positionedOffset: Element.Methods.positionedOffset,
    absolutize: function (a) {
        Position.prepare();
        return Element.absolutize(a)
    },
    relativize: function (a) {
        Position.prepare();
        return Element.relativize(a)
    },
    realOffset: Element.Methods.cumulativeScrollOffset,
    offsetParent: Element.Methods.getOffsetParent,
    page: Element.Methods.viewportOffset,
    clone: function (a, b, c) {
        c = c || {};
        return Element.clonePosition(b, a, c)
    }
};
if (!document.getElementsByClassName) document.getElementsByClassName = function (f) {
    function iter(a) {
        return a.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + a + " ')]"
    }
    f.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
    function (a, b) {
        b = b.toString().strip();
        var c = /\s/.test(b) ? $w(b).map(iter).join('') : iter(b);
        return c ? document._getElementsByXPath('.//*' + c, a) : []
    } : function (b, c) {
        c = c.toString().strip();
        var d = [],
            classNames = (/\s/.test(c) ? $w(c) : null);
        if (!classNames && !c) return d;
        var e = $(b).getElementsByTagName('*');
        c = ' ' + c + ' ';
        for (var i = 0, child, cn; child = e[i]; i++) {
            if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(c) || (classNames && classNames.all(function (a) {
                return !a.toString().blank() && cn.include(' ' + a + ' ')
            })))) d.push(Element.extend(child))
        }
        return d
    };
    return function (a, b) {
        return $(b || document.body).getElementsByClassName(a)
    }
}(Element.Methods);
Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
    initialize: function (a) {
        this.element = $(a)
    },
    _each: function (b) {
        this.element.className.split(/\s+/).select(function (a) {
            return a.length > 0
        })._each(b)
    },
    set: function (a) {
        this.element.className = a
    },
    add: function (a) {
        if (this.include(a)) return;
        this.set($A(this).concat(a).join(' '))
    },
    remove: function (a) {
        if (!this.include(a)) return;
        this.set($A(this).without(a).join(' '))
    },
    toString: function () {
        return $A(this).join(' ')
    }
};
Object.extend(Element.ClassNames.prototype, Enumerable);
Element.addMethods();