var Prototype={
 Version:'1.6.0.3',
 Browser:{IE:!!(window.attachEvent&&navigator.userAgent.indexOf('Opera')===-1),Opera:navigator.userAgent.indexOf('Opera')>-1,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,SelectorsAPI:!!document.querySelector,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 parent=null, properties=$A(arguments);if(Object.isFunction(properties[0]))parent=properties.shift();
function klass(){this.initialize.apply(this,arguments);}Object.extend(klass, Class.Methods);klass.superclass=parent;klass.subclasses=[];
if(parent){var subclass=function(){};subclass.prototype=parent.prototype;klass.prototype=new subclass;parent.subclasses.push(klass);}for(var i=0;i<properties.length;i++)klass.addMethods(properties[i]);if(!klass.prototype.initialize)klass.prototype.initialize=Prototype.emptyFunction;klass.prototype.constructor=klass;return klass;}};
Class.Methods={addMethods:function(source){var ancestor =this.superclass&&this.superclass.prototype;
 var properties=Object.keys(source);
 if(!Object.keys({ toString:true }).length)
 properties.push("toString", "valueOf");
 for(var i=0, length=properties.length;i<length;i++){
 var property=properties[i], value=source[property];
 if(ancestor&&Object.isFunction(value)&&value.argumentNames().first()=="$super"){
 var method=value;
 value=(function(m){
 return function(){ return ancestor[m].apply(this, arguments) };
 })(property).wrap(method);
 value.valueOf=method.valueOf.bind(method);
 value.toString=method.toString.bind(method);
 }this.prototype[property]=value;}return this;}};
var Abstract={};
Object.extend=function(destination, source){
 for(var property in source)
 destination[property]=source[property];return destination;};
Object.extend(Object,{
 inspect:function(object){
 try{
 if(Object.isUndefined(object)) return 'undefined';
 if(object===null) return 'null';
 return object.inspect?object.inspect() :String(object);
 } catch (e){
 if(e instanceof RangeError) return '...';
 throw e;
 }
 },
 toJSON:function(object){var type=typeof object;switch (type){case 'undefined':case 'function':case 'unknown':return; case 'boolean':return object.toString();}if(object===null) return 'null';if(object.toJSON) return object.toJSON();if(Object.isElement(object)) return;var results=[];for(var property in object){var value=Object.toJSON(object[property]);if(!Object.isUndefined(value))results.push(property.toJSON()+':'+value);}return '{'+results.join(', ')+'}';},

toQueryString:function(object){return $H(object).toQueryString();},toHTML:function(object){return object&&object.toHTML?object.toHTML() :String.interpret(object);},keys:function(object){var keys=[];for(var property in object){keys.push(property);}return keys;},values:function(object){var values=[];for(var property in object){values.push(object[property]);}return values;},clone:function(object){return Object.extend({}, object);},isElement:function(object){return !!(object&&object.nodeType==1);},isArray:function(object){return object != null&&typeof object=="object"&&'splice' in object&&'join' in object;},isHash:function(object){return object instanceof Hash;},isFunction:function(object){return typeof object=="function";},isString:function(object){return typeof object=="string";},isNumber:function(object){return typeof object=="number";},isUndefined:function(object){return typeof object=="undefined";}});
Object.extend(Function.prototype,{
 argumentNames:function(){
 var names=this.toString().match(/^[\s\(]*function[^(]*\(([^\)]*)\)/)[1]
 .replace(/\s+/g, '').split(',');return names.length==1&&!names[0]?[] :names;
 },

 bind:function(){
 if(arguments.length<2&&Object.isUndefined(arguments[0])) return this;
 var __method=this, args=$A(arguments), object=args.shift();
 return function(){
 return __method.apply(object, args.concat($A(arguments)));
 }
 },

 bindAsEventListener:function(){
 var __method=this, args=$A(arguments), object=args.shift();
 return function(event){
 return __method.apply(object,[event||window.event].concat(args));
 }
 },
 curry:function(){
 if(!arguments.length) return this;
 var __method=this, args=$A(arguments);
 return function(){
 return __method.apply(this, args.concat($A(arguments)));
 }
 },
 delay:function(){
 var __method=this, args=$A(arguments), timeout=args.shift()*1000;
 return window.setTimeout(function(){
 return __method.apply(__method, args);
 }, timeout);
 },
 defer:function(){
 var args=[0.01].concat($A(arguments));
 return this.delay.apply(this,args);
 },
 wrap:function(wrapper){
 var __method=this;
 return function(){
 return wrapper.apply(this,[__method.bind(this)].concat($A(arguments)));
 }
 },
 methodize:function(){
 if(this._methodized) return this._methodized;
 var __method=this;
 return this._methodized=function(){
 return __method.apply(null, [this].concat($A(arguments)));
 };
 }
});
var Try={these:function(){var returnValue;for(var i=0, length=arguments.length;i<length;i++){ var lambda=arguments[i];try{returnValue=lambda();break;}catch(e){}}return returnValue;}};

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

 this.registerCallback();
 },

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

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

Object.extend(String.prototype,{
 gsub:function(pattern, replacement){
 var result='', source=this, match;
 replacement=arguments.callee.prepareReplacement(replacement);

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

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

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

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

 truncate:function(length, truncation){
 length=length||30;
 truncation=Object.isUndefined(truncation)?'...' :truncation;
 return this.length>length ?
 this.slice(0, length-truncation.length)+truncation :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 matchAll=new RegExp(Prototype.ScriptFragment, 'img');
var matchOne=new RegExp(Prototype.ScriptFragment, 'im');
return (this.match(matchAll)||[]).map(function(scriptTag){
return (scriptTag.match(matchOne)||['', ''])[1];});},

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

escapeHTML:function(){
var self=arguments.callee;
self.text.data=this;
return self.div.innerHTML;
},
unescapeHTML:function(){var div=new Element('div');div.innerHTML=this.stripTags();return div.childNodes[0]?(div.childNodes.length>1?$A(div.childNodes).inject('', function(memo, node){ return memo+node.nodeValue }):div.childNodes[0].nodeValue) :'';},
toQueryParams:function(separator){
var match=this.strip().match(/([^?#]*)(#.*)?$/);
if(!match) return{};

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

if(key in hash){if(!Object.isArray(hash[key])) hash[key]=[hash[key]];hash[key].push(value);}else hash[key]=value;}return hash;});},
toArray:function(){return this.split('');},
succ:function(){return this.slice(0, this.length-1)+String.fromCharCode(this.charCodeAt(this.length-1)+1);},
times:function(count){return count<1?'' :new Array(count+1).join(this);},
camelize:function(){var parts=this.split('-'), len=parts.length;if(len==1) return parts[0];var camelized=this.charAt(0)=='-'?parts[0].charAt(0).toUpperCase()+parts[0].substring(1):parts[0];for(var i=1;i<len;i++)camelized += parts[i].charAt(0).toUpperCase()+parts[i].substring(1);return camelized;},
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(useDoubleQuotes){
var escapedString=this.gsub(/[\x00-\x1f\\]/,function(match){var character=String.specialChar[match[0]];return character?character :'\\u00'+match[0].charCodeAt().toPaddedString(2,16);});if(useDoubleQuotes) return '"'+escapedString.replace(/"/g, '\\"')+'"';return "'"+escapedString.replace(/'/g, '\\\'')+"'";},
toJSON:function(){return this.inspect(true);},
unfilterJSON:function(filter){return this.sub(filter||Prototype.JSONFilter, '#{1}');},
isJSON:function(){var str=this;if(str.blank()) return false; str=this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g,'');return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);},
evalJSON:function(sanitize){var json=this.unfilterJSON();try{if(!sanitize||json.isJSON()) return eval('('+json+')');}catch (e){}throw new SyntaxError('Badly formed JSON string:'+this.inspect());},
include:function(pattern){return this.indexOf(pattern)>-1;},
startsWith:function(pattern){return this.indexOf(pattern)===0;},
endsWith:function(pattern){var d=this.length-pattern.length;return d >= 0&&this.lastIndexOf(pattern)===d;},
empty:function(){return this=='';},blank:function(){return /^\s*$/.test(this);},interpolate:function(object, pattern){return new Template(this, pattern).evaluate(object);}});
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.stripTags().replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
 }
});
String.prototype.gsub.prepareReplacement=function(replacement){
 if(Object.isFunction(replacement)) return replacement;
 var template=new Template(replacement);
 return function(match){ return template.evaluate(match) };
};
String.prototype.parseQuery=String.prototype.toQueryParams;
Object.extend(String.prototype.escapeHTML,{
 div:document.createElement('div'),
 text:document.createTextNode('')
});
String.prototype.escapeHTML.div.appendChild(String.prototype.escapeHTML.text);
var Template=Class.create({
 initialize:function(template, pattern){
 this.template=template.toString();
 this.pattern=pattern||Template.Pattern;
 },

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

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

 var before=match[1]||'';
 if(before=='\\') return match[2];
 var ctx=object, expr=match[3];
 var pattern=/^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
 match=pattern.exec(expr);
 if(match==null) return before;
 while (match != null){
 var comp=match[1].startsWith('[')?match[2].gsub('\\\\]', ']') :match[1];
 ctx=ctx[comp];
 if(null==ctx||''==match[3]) break;
 expr=expr.substring('['==match[3]?match[1].length :match[0].length);
 match=pattern.exec(expr); }return before+String.interpret(ctx);});}});
Template.Pattern=/(^|.|\r|\n)(#\{(.*?)\})/;
var $break={};
var Enumerable={
 each:function(iterator, context){
 var index=0;
 try{
 this._each(function(value){
 iterator.call(context, value, index++);
 });
 } catch (e){
 if(e != $break) throw e;
 }
 return this;
 }, eachSlice:function(number, iterator, context){
 var index=-number, slices=[], array=this.toArray();
 if(number<1) return array;
 while ((index += number)<array.length)
 slices.push(array.slice(index, index+number));
 return slices.collect(iterator, context);
 }, all:function(iterator, context){
 iterator=iterator||Prototype.K;
 var result=true;
 this.each(function(value, index){
 result=result&&!!iterator.call(context, value, index);
 if(!result) throw $break;
 });return result;},

 any:function(iterator, context){
 iterator=iterator||Prototype.K;
 var result=false;
 this.each(function(value, index){
 if(result=!!iterator.call(context, value, index))
 throw $break; });return result;},
 collect:function(iterator, context){
 iterator=iterator||Prototype.K;
 var results=[];
 this.each(function(value, index){
 results.push(iterator.call(context, value, index));
 }); return results;},
 detect:function(iterator, context){
 var result;
 this.each(function(value, index){
 if(iterator.call(context, value, index)){
 result=value;throw $break;}});return result;},
 findAll:function(iterator, context){
 var results=[]; this.each(function(value, index){
 if(iterator.call(context, value, index))results.push(value);});return results;},
 grep:function(filter, iterator, context){
 iterator=iterator||Prototype.K;
 var results=[];
 if(Object.isString(filter))
 filter=new RegExp(filter);
 this.each(function(value, index){
 if(filter.match(value))
 results.push(iterator.call(context, value, index));
 });
 return results;
 },

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

if(Prototype.Browser.WebKit){
 $A=function(iterable){
 if(!iterable) return [];
 if(!(typeof iterable==='function'&&typeof iterable.length ===
 'number'&&typeof iterable.item==='function')&&iterable.toArray)
 return iterable.toArray();
 var length=iterable.length||0, results=new Array(length);
 while (length--) results[length]=iterable[length];
 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(iterator){
 for(var i=0, length=this.length;i<length;i++)
 iterator(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(value){
 return value != null;
 });
 },

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

 without:function(){
 var values=$A(arguments);
 return this.select(function(value){
 return !values.include(value);
 });
 },

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

 reduce:function(){
 return this.length>1?this :this[0];
 },

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

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

 clone:function(){
 return [].concat(this);
 },

 size:function(){
 return this.length;
 },

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

 toJSON:function(){
 var results=[];
 this.each(function(object){
 var value=Object.toJSON(object);
 if(!Object.isUndefined(value)) results.push(value);
 });
 return '['+results.join(', ')+']';
 }
});
if(Object.isFunction(Array.prototype.forEach))
 Array.prototype._each=Array.prototype.forEach;

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

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

Array.prototype.toArray=Array.prototype.clone;

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

if(Prototype.Browser.Opera){
 Array.prototype.concat=function(){
 var array=[];
 for(var i=0, length=this.length;i<length;i++) array.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++)
 array.push(arguments[i][j]);
 } else{
 array.push(arguments[i]);
 }
 }
 return array;
 };
}
Object.extend(Number.prototype,{
 toColorPart:function(){
 return this.toPaddedString(2, 16);
 },

 succ:function(){
 return this+1;
 },

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

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

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

$w('abs round ceil floor').each(function(method){
 Number.prototype[method]=Math[method].methodize();
});
function $H(object){
 return new Hash(object);
};

var Hash=Class.create(Enumerable, (function(){

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

 return{
 initialize:function(object){
 this._object=Object.isHash(object)?object.toObject() :Object.clone(object);
 },

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

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

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

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

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

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

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

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

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

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

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

 if(values&&typeof values=='object'){
 if(Object.isArray(values))
 return results.concat(values.map(toQueryPair.curry(key)));
 } else results.push(toQueryPair(key, values));
 return results;
 }).join('&');
 },

 inspect:function(){
 return '#<Hash:{'+this.map(function(pair){
 return pair.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(start, end, exclusive){
 this.start=start;
 this.end=end;
 this.exclusive=exclusive;
 },

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

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

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

var Ajax={
 getTransport:function(){
 return Try.these(
 function(){return new XMLHttpRequest()},
 function(){return new ActiveXObject('Msxml2.XMLHTTP')},
 function(){return new ActiveXObject('Microsoft.XMLHTTP')}
 )||false;
 },

 activeRequestCount:0
};

Ajax.Responders={
 responders:[],

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

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

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

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

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
 onCreate:function(){ Ajax.activeRequestCount++ },
 onComplete:function(){ Ajax.activeRequestCount-- }
});

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

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

 if(Object.isString(this.options.parameters))
 this.options.parameters=this.options.parameters.toQueryParams();
 else if(Object.isHash(this.options.parameters))
 this.options.parameters=this.options.parameters.toObject();
 }
});
Ajax.Request=Class.create(Ajax.Base,{
 _complete:false,
 initialize:function($super, url, options){
 $super(options);
 this.transport=Ajax.getTransport();
 this.request(url);
 },
 request:function(url){
 this.url=url;
 this.method=this.options.method;
 var params=Object.clone(this.options.parameters);

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

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

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

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

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

 this.body=this.method=='post'?(this.options.postBody||params) :null;
 this.transport.send(this.body);
 if(!this.options.asynchronous&&this.transport.overrideMimeType)
 this.onStateChange();

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

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

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

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

 if(this.transport.overrideMimeType &&
 (navigator.userAgent.match(/Gecko\/(\d{4})/)||[0,2005])[1]<2005)
 headers['Connection']='close';
 }
 if(typeof this.options.requestHeaders=='object'){
 var extras=this.options.requestHeaders;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

 status:0,
 statusText:'',

 getStatus:Ajax.Request.prototype.getStatus,

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

 getHeader:Ajax.Request.prototype.getHeader,

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

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

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

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

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

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

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

 $super(url, options);
 },

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

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

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

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

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

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

 this.start();
 },

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

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

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

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

 onTimerEvent:function(){
 this.updater=new Ajax.Updater(this.container, this.url, this.options);
 }
});
function $(element){
 if(arguments.length>1){
 for(var i=0, elements=[], length=arguments.length;i<length;i++)
 elements.push($(arguments[i]));
 return elements;
 }
 if(Object.isString(element))
 element=document.getElementById(element);
 return Element.extend(element);
}

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

if(!window.Node) var Node={};
if(!Node.ELEMENT_NODE){
 Object.extend(Node,{
 ELEMENT_NODE:1,
 ATTRIBUTE_NODE:2,
 TEXT_NODE:3,
 CDATA_SECTION_NODE:4,
 ENTITY_REFERENCE_NODE:5,
 ENTITY_NODE:6,
 PROCESSING_INSTRUCTION_NODE:7,
 COMMENT_NODE:8,
 DOCUMENT_NODE:9,
 DOCUMENT_TYPE_NODE:10,
 DOCUMENT_FRAGMENT_NODE:11,
 NOTATION_NODE:12
 });
}
(function(){
 var element=this.Element;
 this.Element=function(tagName, attributes){
 attributes=attributes||{};
 tagName=tagName.toLowerCase();
 var cache=Element.cache;
 if(Prototype.Browser.IE&&attributes.name){
 tagName='<'+tagName+' name="'+attributes.name+'">';
 delete attributes.name;
 return Element.writeAttribute(document.createElement(tagName), attributes);
 }
 if(!cache[tagName]) cache[tagName]=Element.extend(document.createElement(tagName));
 return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
 };
 Object.extend(this.Element, element||{});
 if(element) this.Element.prototype=element.prototype;
}).call(window);

Element.cache={};

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

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

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

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

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

 update:function(element, content){
 element=$(element);
 if(content&&content.toElement) content=content.toElement();
 if(Object.isElement(content)) return element.update().insert(content);
 content=Object.toHTML(content);
 element.innerHTML=content.stripScripts();
 content.evalScripts.bind(content).defer();
 return element;
 },

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

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

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

 var content, insert, tagName, childNodes;

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

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

 content=Object.toHTML(content);

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

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

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

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

 return element;
 },

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

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

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

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

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

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

 immediateDescendants:function(element){
 if(!(element=$(element).firstChild)) return [];
 while (element&&element.nodeType != 1) element=element.nextSibling;
 if(element) return [element].concat($(element).nextSiblings());
 return [];
 },

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

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

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

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

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

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

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

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

 select:function(){
 var args=$A(arguments), element=$(args.shift());
 return Selector.findChildElements(element, args);
 },

 adjacent:function(){
 var args=$A(arguments), element=$(args.shift());
 return Selector.findChildElements(element.parentNode, args).without(element);
 },

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

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

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

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

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

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

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

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

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

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

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

 toggleClassName:function(element, className){
 if(!(element=$(element))) return;
 return element[element.hasClassName(className) ?
 'removeClassName' :'addClassName'](className);
 },
 cleanWhitespace:function(element){
 element=$(element);
 var node=element.firstChild;
 while (node){
 var nextNode=node.nextSibling;
 if(node.nodeType==3&&!/\S/.test(node.nodeValue))
 element.removeChild(node);
 node=nextNode;
 }
 return element;
 },

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

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

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

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

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

 return false;
 },

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

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

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

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

 return element;
 },

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

 getDimensions:function(element){
 element=$(element);
 var display=element.getStyle('display');
 if(display != 'none'&&display != null) 
 return{width:element.offsetWidth, height:element.offsetHeight};
 var els=element.style;
 var originalVisibility=els.visibility;
 var originalPosition=els.position;
 var originalDisplay=els.display;
 els.visibility='hidden';
 els.position='absolute';
 els.display='block';
 var originalWidth=element.clientWidth;
 var originalHeight=element.clientHeight;
 els.display=originalDisplay;
 els.position=originalPosition;
 els.visibility=originalVisibility;
 return{width:originalWidth, height:originalHeight};
 },

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

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

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

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

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

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

 absolutize:function(element){
 element=$(element);
 if(element.getStyle('position')=='absolute') return element;
 var offsets=element.positionedOffset();
 var top =offsets[1];
 var left =offsets[0];
 var width =element.clientWidth;
 var height =element.clientHeight;

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

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

 relativize:function(element){
 element=$(element);
 if(element.getStyle('position')=='relative') return element;
 element.style.position='relative';
 var top =parseFloat(element.style.top||0)-(element._originalTop||0);
 var left=parseFloat(element.style.left||0)-(element._originalLeft||0);

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

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

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

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

 return $(document.body);
 },

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

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

 } while(element=element.offsetParent);

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

 clonePosition:function(element, source){
 var options=Object.extend({
 setLeft:true,
 setTop:true,
 setWidth:true,
 setHeight:true,
 offsetTop:0,
 offsetLeft:0
 }, arguments[2]||{});
 source=$(source);
 var p=source.viewportOffset();
 element=$(element);
 var delta=[0, 0];
 var parent=null;
 if(Element.getStyle(element, 'position')=='absolute'){
 parent=element.getOffsetParent();
 delta=parent.viewportOffset();
 }
 if(parent==document.body){
 delta[0] -= document.body.offsetLeft;
 delta[1] -= document.body.offsetTop;
 }
 if(options.setLeft) element.style.left =(p[0]-delta[0]+options.offsetLeft)+'px';
 if(options.setTop) element.style.top =(p[1]-delta[1]+options.offsetTop)+'px';
 if(options.setWidth) element.style.width=source.offsetWidth+'px';
 if(options.setHeight) element.style.height=source.offsetHeight+'px';
 return element;
 }
};

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(proceed, element, style){
 switch (style){
 case 'left':case 'top':case 'right':case 'bottom':
 if(proceed(element, 'position')==='static') return null;
 case 'height':case 'width':
 if(!Element.visible(element)) return null;
 var dim=parseInt(proceed(element, style), 10);

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

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

 Element.Methods.readAttribute=Element.Methods.readAttribute.wrap(
 function(proceed, element, attribute){
 if(attribute==='title') return element.title;
 return proceed(element, attribute);
 }
 );
}

else if(Prototype.Browser.IE){
 Element.Methods.getOffsetParent=Element.Methods.getOffsetParent.wrap(function(proceed, element){element=$(element);try{ element.offsetParent }
 catch(e){return $(document.body)}
 var position=element.getStyle('position');if(position !== 'static') return proceed(element);element.setStyle({ position:'relative' });
 var value=proceed(element);element.setStyle({position:position});return value;});

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

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

 Element.Methods.getStyle=function(element, style){
 element=$(element);
 style=(style=='float'||style=='cssFloat')?'styleFloat' :style.camelize();
 var value=element.style[style];
 if(!value&&element.currentStyle) value=element.currentStyle[style];

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

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

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

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

 Element._attributeTranslations={
 read:{
 names:{
 'class':'className',
 'for':'htmlFor'
 },
 values:{
 _getAttr:function(element, attribute){
 return element.getAttribute(attribute, 2);
 },
 _getAttrNode:function(element, attribute){
 var node=element.getAttributeNode(attribute);
 return node?node.value :"";
 },
 _getEv:function(element, attribute){
 attribute=element.getAttribute(attribute);
 return attribute?attribute.toString().slice(23, -2) :null;
 },
 _flag:function(element, attribute){
 return $(element).hasAttribute(attribute)?attribute :null;
 },
 style:function(element){
 return element.style.cssText.toLowerCase();
 },
 title:function(element){
 return element.title;
 }
 }
 }
 };

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

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

 Element._attributeTranslations.has={};

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

 (function(v){
 Object.extend(v,{
 href: v._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(element, value){
 element=$(element);
 element.style.opacity=(value==1)?0.999999 :
 (value==='')?'' :(value<0.00001)?0 :value;
 return element;
 };
}

else if(Prototype.Browser.WebKit){
 Element.Methods.setOpacity=function(element, value){
 element=$(element);
 element.style.opacity=(value==1||value==='')?'' :
 (value<0.00001)?0 :value;

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

 return element;
 };
 Element.Methods.cumulativeOffset=function(element){
 var valueT=0, valueL=0;
 do{
 valueT += element.offsetTop||0;
 valueL += element.offsetLeft||0;
 if(element.offsetParent==document.body)
 if(Element.getStyle(element, 'position')=='absolute') break;

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

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

if(Prototype.Browser.IE||Prototype.Browser.Opera){
 Element.Methods.update=function(element, content){
 element=$(element);

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

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

 if(tagName in Element._insertionTranslations.tags){
 $A(element.childNodes).each(function(node){ element.removeChild(node) });
 Element._getContentFromAnonymousElement(tagName, content.stripScripts())
 .each(function(node){ element.appendChild(node) });
 }
 else element.innerHTML=content.stripScripts();

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

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

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

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

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

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

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

Element._getContentFromAnonymousElement=function(tagName, html){
 var div=new Element('div'), t=Element._insertionTranslations.tags[tagName];
 if(t){
 div.innerHTML=t[0]+html+t[1];
 t[2].times(function(){ div=div.firstChild });
 } else div.innerHTML=html;
 return $A(div.childNodes);
};Element._insertionTranslations={
 before:function(element, node){
 element.parentNode.insertBefore(node, element);
 }, top:function(element, node){element.insertBefore(node, element.firstChild);},
 bottom:function(element, node){
 element.appendChild(node);
 },
 after:function(element, node){
 element.parentNode.insertBefore(node, element.nextSibling);
 },
 tags:{
 TABLE:['<table>', '</table>',  1],
 TBODY:['<table><tbody>', '</tbody></table>', 2],
 TR:['<table><tbody><tr>', '</tr></tbody></table>', 3],
 TD:['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
 SELECT:['<select>', '</select>',  1]
 }};
(function(){
 Object.extend(this.tags,{
 THEAD:this.tags.TBODY,
 TFOOT:this.tags.TBODY,
 TH:this.tags.TD
 });
}).call(Element._insertionTranslations);
Element.Methods.Simulated={
 hasAttribute:function(element, attribute){
 attribute=Element._attributeTranslations.has[attribute]||attribute;
 var node=$(element).getAttributeNode(attribute);
 return !!(node&&node.specified);
 }
};
Element.Methods.ByTag={};

Object.extend(Element, Element.Methods);

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 Methods={}, ByTag=Element.Methods.ByTag;
 var extend=Object.extend(function(element){
 if(!element||element._extendedByPrototype ||
 element.nodeType != 1||element==window) return element;
 var methods=Object.clone(Methods),
 tagName=element.tagName.toUpperCase(), property, value;
 if(ByTag[tagName]) Object.extend(methods, ByTag[tagName]);
 for(property in methods){
 value=methods[property];
 if(Object.isFunction(value)&&!(property in element))
 element[property]=value.methodize();
 }
 element._extendedByPrototype=Prototype.emptyFunction;
 return element;},{refresh:function(){if(!Prototype.BrowserFeatures.ElementExtensions){Object.extend(Methods, Element.Methods);
 Object.extend(Methods, Element.Methods.Simulated);
 }}});extend.refresh();return extend;})();Element.hasAttribute=function(element, attribute){if(element.hasAttribute) return element.hasAttribute(attribute);
 return Element.Methods.Simulated.hasAttribute(element, attribute);
};Element.addMethods=function(methods){
 var F=Prototype.BrowserFeatures, T=Element.Methods.ByTag;
 if(!methods){
 Object.extend(Form, Form.Methods);
 Object.extend(Form.Element, Form.Element.Methods);
 Object.extend(Element.Methods.ByTag,{"FORM":Object.clone(Form.Methods),"INPUT":Object.clone(Form.Element.Methods),"SELECT":Object.clone(Form.Element.Methods),
 "TEXTAREA":Object.clone(Form.Element.Methods)});
 }
 if(arguments.length==2){var tagName=methods;methods=arguments[1];}
 if(!tagName) Object.extend(Element.Methods, methods||{});
 else{
 if(Object.isArray(tagName)) tagName.each(extend);
 else extend(tagName);
 }
 function extend(tagName){
 tagName=tagName.toUpperCase();
 if(!Element.Methods.ByTag[tagName])
 Element.Methods.ByTag[tagName]={};
 Object.extend(Element.Methods.ByTag[tagName], methods);
 }
 function copy(methods, destination, onlyIfAbsent){
 onlyIfAbsent=onlyIfAbsent||false;
 for(var property in methods){
 var value=methods[property];
 if(!Object.isFunction(value)) continue;
 if(!onlyIfAbsent||!(property in destination))
 destination[property]=value.methodize();
 }
 }
 function findDOMClass(tagName){
 var klass;
 var trans={
 "OPTGROUP":"OptGroup", "TEXTAREA":"TextArea", "P":"Paragraph",
 "FIELDSET":"FieldSet", "UL":"UList", "OL":"OList", "DL":"DList",
 "DIR":"Directory", "H1":"Heading", "H2":"Heading", "H3":"Heading",
 "H4":"Heading", "H5":"Heading", "H6":"Heading", "Q":"Quote",
 "INS":"Mod", "DEL":"Mod", "A":"Anchor", "IMG":"Image", "CAPTION":
 "TableCaption", "COL":"TableCol", "COLGROUP":"TableCol", "THEAD":
 "TableSection", "TFOOT":"TableSection", "TBODY":"TableSection", "TR":
 "TableRow", "TH":"TableCell", "TD":"TableCell", "FRAMESET":
 "FrameSet", "IFRAME":"IFrame"
 };
 if(trans[tagName]) klass='HTML'+trans[tagName]+'Element';
 if(window[klass]) return window[klass];
 klass='HTML'+tagName+'Element';
 if(window[klass]) return window[klass];
 klass='HTML'+tagName.capitalize()+'Element';
 if(window[klass]) return window[klass];

 window[klass]={};
 window[klass].prototype=document.createElement(tagName)['__proto__'];
 return window[klass];
 }
 if(F.ElementExtensions){
 copy(Element.Methods, HTMLElement.prototype);
 copy(Element.Methods.Simulated, HTMLElement.prototype, true);
 }
 if(F.SpecificElementExtensions){
 for(var tag in Element.Methods.ByTag){
 var klass=findDOMClass(tag);
 if(Object.isUndefined(klass)) continue;
 copy(T[tag], klass.prototype);
 }
 }
 Object.extend(Element, Element.Methods);
 delete Element.ByTag;
 if(Element.extend.refresh) Element.extend.refresh();
 Element.cache={};
};

document.viewport={
 getDimensions:function(){
 var dimensions={}, B=Prototype.Browser;
 $w('width height').each(function(d){
 var D=d.capitalize();
 if(B.WebKit&&!document.evaluate){
 dimensions[d]=self['inner'+D];
 } else if(B.Opera&&parseFloat(window.opera.version())<9.5){
 dimensions[d]=document.body['client'+D]
 } else{
 dimensions[d]=document.documentElement['client'+D];
 }
 });
 return dimensions;
 },

 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(expression){this.expression=expression.strip();

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

 shouldUseXPath:function(){
 if(!Prototype.BrowserFeatures.XPath) return false;
 var e=this.expression;
 if(Prototype.Browser.WebKit &&
 (e.include("-of-type")||e.include(":empty")))
 return false;
 if((/(\[[\w-]*?:|:checked)/).test(e))
 return false;
 return true;
 },
 shouldUseSelectorsAPI:function(){
 if(!Prototype.BrowserFeatures.SelectorsAPI) return false;
 if(!Selector._div) Selector._div=new Element('div');
 try{
 Selector._div.querySelector(this.expression);
 } catch(e){
 return false;
 }
 return true;
 },

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

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

 switch (this.mode){
 case 'selectorsAPI':
 if(root !== document){
 var oldId=root.id, id=$(root).identify();
 e="#"+id+" "+e; }
 results=$A(root.querySelectorAll(e)).map(Element.extend);
 root.id=oldId;return results;
 case 'xpath':
 return document._getElementsByXPath(this.xpath, root);
 default:
 return this.matcher(root);
 }
 },

 match:function(element){this.tokens=[];
 var e=this.expression, ps=Selector.patterns, as=Selector.assertions;
 var le, p, m;
 while(e&&le !== e&&(/\S/).test(e)){
 le=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(element);}}}}

 var match=true, name, matches;
 for(var i=0, token; token=this.tokens[i];i++){
 name=token[0], matches=token[1];
 if(!Selector.assertions[name](element, matches)){
 match=false; break;
 }}return match;},
 toString:function(){
 return this.expression;
 }, inspect:function(){return "#<Selector:"+this.expression.inspect()+">";
 }});
Object.extend(Selector,{
 _cache:{},

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

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

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

 patterns:{
 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:/^\[((?:[\w]+:)?[\w]+)\]/,
 attr: /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
 },
 assertions:{
 tagName:function(element, matches){
 return matches[1].toUpperCase()==element.tagName.toUpperCase();
 },

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

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

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

 attr:function(element, matches){
 var nodeValue=Element.readAttribute(element, matches[1]);
 return nodeValue&&Selector.operators[matches[2]](nodeValue, matches[5]||matches[6]);
 }
 }, 
 handlers:{
 concat:function(a, b){
 for(var i=0, node; node=b[i];i++)
 a.push(node);
 return a;
 },
 mark:function(nodes){
 var _true=Prototype.emptyFunction;
 for(var i=0, node; node=nodes[i];i++)
 node._countedByPrototype=_true;
 return nodes;
 },
 unmark:function(nodes){
 for(var i=0, node; node=nodes[i];i++)
 node._countedByPrototype=undefined;
 return nodes;
 },
 index:function(parentNode, reverse, ofType){
 parentNode._countedByPrototype=Prototype.emptyFunction;
 if(reverse){
 for(var nodes=parentNode.childNodes, i=nodes.length-1, j=1;i >= 0;i--){
 var node=nodes[i];
 if(node.nodeType==1&&(!ofType||node._countedByPrototype)) node.nodeIndex=j++;
 }
 } else{
 for(var i=0, j=1, nodes=parentNode.childNodes; node=nodes[i];i++)
 if(node.nodeType==1&&(!ofType||node._countedByPrototype)) node.nodeIndex=j++;
 }
 },
 unique:function(nodes){
 if(nodes.length==0) return nodes;
 var results=[], n;
 for(var i=0, l=nodes.length;i<l;i++)
 if(!(n=nodes[i])._countedByPrototype){
 n._countedByPrototype=Prototype.emptyFunction;
 results.push(Element.extend(n));
 }
 return Selector.handlers.unmark(results);
 },
 descendant:function(nodes){
 var h=Selector.handlers;
 for(var i=0, results=[], node; node=nodes[i];i++)
 h.concat(results, node.getElementsByTagName('*'));
 return results;
 },
 child:function(nodes){
 var h=Selector.handlers;
 for(var i=0, results=[], node; node=nodes[i];i++){
 for(var j=0, child; child=node.childNodes[j]; j++)
 if(child.nodeType==1&&child.tagName != '!') results.push(child);
 }
 return results;
 },
 adjacent:function(nodes){
 for(var i=0, results=[], node; node=nodes[i];i++){
 var next=this.nextElementSibling(node);
 if(next) results.push(next);
 }
 return results;
 },
 laterSibling:function(nodes){
 var h=Selector.handlers;
 for(var i=0, results=[], node; node=nodes[i];i++)
 h.concat(results, Element.nextSiblings(node));
 return results;
 },

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

 previousElementSibling:function(node){
 while (node=node.previousSibling)
 if(node.nodeType==1) return node;
 return null;
 },
 tagName:function(nodes, root, tagName, combinator){
 var uTagName=tagName.toUpperCase();
 var results=[], h=Selector.handlers;
 if(nodes){
 if(combinator){
 if(combinator=="descendant"){
 for(var i=0, node; node=nodes[i];i++)
 h.concat(results, node.getElementsByTagName(tagName));
 return results;
 } else nodes=this[combinator](nodes);
 if(tagName=="*") return nodes;
 }
 for(var i=0, node; node=nodes[i];i++)
 if(node.tagName.toUpperCase()===uTagName) results.push(node);
 return results;
 } else return root.getElementsByTagName(tagName);
 },

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

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

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

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

 attr:function(nodes, root, attr, value, operator, combinator){
 if(!nodes) nodes=root.getElementsByTagName("*");
 if(nodes&&combinator) nodes=this[combinator](nodes);
 var handler=Selector.operators[operator], results=[];
 for(var i=0, node; node=nodes[i];i++){
 var nodeValue=Element.readAttribute(node, attr);
 if(nodeValue===null) continue;
 if(handler(nodeValue, value)) results.push(node);
 }return results;},pseudo:function(nodes, name, value, root, combinator){
 if(nodes&&combinator) nodes=this[combinator](nodes);
 if(!nodes) nodes=root.getElementsByTagName("*");
 return Selector.pseudos[name](nodes, value, root);
 }},
 pseudos:{
 'first-child':function(nodes, value, root){
 for(var i=0, results=[], node; node=nodes[i];i++){
 if(Selector.handlers.previousElementSibling(node)) continue;
 results.push(node);
 }
 return results;
 },
 'last-child':function(nodes, value, root){
 for(var i=0, results=[], node; node=nodes[i];i++){
 if(Selector.handlers.nextElementSibling(node)) continue;
 results.push(node);
 }
 return results;
 },
 'only-child':function(nodes, value, root){
 var h=Selector.handlers;
 for(var i=0, results=[], node; node=nodes[i];i++)
 if(!h.previousElementSibling(node)&&!h.nextElementSibling(node))
 results.push(node);
 return results;
 },
 'nth-child': function(nodes, formula, root){
 return Selector.pseudos.nth(nodes, formula, root);
 },
 'nth-last-child':function(nodes, formula, root){
 return Selector.pseudos.nth(nodes, formula, root, true);
 },
 'nth-of-type':function(nodes, formula, root){
 return Selector.pseudos.nth(nodes, formula, root, false, true);
 },
 'nth-last-of-type':function(nodes, formula, root){
 return Selector.pseudos.nth(nodes, formula, root, true, true);
 },
 'first-of-type':function(nodes, formula, root){
 return Selector.pseudos.nth(nodes, "1", root, false, true);
 },
 'last-of-type':function(nodes, formula, root){
 return Selector.pseudos.nth(nodes, "1", root, true, true);
 },
 'only-of-type':function(nodes, formula, root){
 var p=Selector.pseudos;
 return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
 },
 getIndices:function(a, b, total){
 if(a==0) return b>0?[b] :[];
 return $R(1, total).inject([], function(memo, i){
 if(0==(i-b) % a&&(i-b) / a >= 0) memo.push(i);
 return memo;
 });
 },
 nth:function(nodes, formula, root, reverse, ofType){
 if(nodes.length==0) return [];
 if(formula=='even') formula='2n+0';
 if(formula=='odd') formula='2n+1';
 var h=Selector.handlers, results=[], indexed=[], m;
 h.mark(nodes);
 for(var i=0, node; node=nodes[i];i++){
 if(!node.parentNode._countedByPrototype){
 h.index(node.parentNode, reverse, ofType);
 indexed.push(node.parentNode);
 }}
 if(formula.match(/^\d+$/)){
 formula=Number(formula);
 for(var i=0, node; node=nodes[i];i++)
 if(node.nodeIndex==formula) results.push(node);
 } else if(m=formula.match(/^(-?\d*)?n(([+-])(\d+))?/)){
 if(m[1]=="-") m[1]=-1;
 var a=m[1]?Number(m[1]) :1;
 var b=m[2]?Number(m[2]) :0;
 var indices=Selector.pseudos.getIndices(a, b, nodes.length);
 for(var i=0, node, l=indices.length; node=nodes[i];i++){
 for(var j=0; j<l; j++)
 if(node.nodeIndex==indices[j]) results.push(node);
 }
 }
 h.unmark(nodes);
 h.unmark(indexed);
 return results;
 },

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

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

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

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

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

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

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

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

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

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

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

function $$(){
 return Selector.findChildElements(document, $A(arguments));
}
var Form={
 reset:function(form){
 $(form).reset();
 return form;
 },

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

 var data=elements.inject({}, function(result, element){
 if(!element.disabled&&element.name){
 key=element.name; value=$(element).getValue();
 if(value != null&&element.type != 'file'&&(element.type != 'submit'||(!submitted &&
 submit !== false&&(!submit||key==submit)&&(submitted=true)))){
 if(key in result){
 if(!Object.isArray(result[key])) result[key]=[result[key]];
 result[key].push(value);
 }
 else result[key]=value;
 }
 }
 return result;
 });

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

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

 getElements:function(form){
 return $A($(form).getElementsByTagName('*')).inject([],
 function(elements, child){
 if(Form.Element.Serializers[child.tagName.toLowerCase()])
 elements.push(Element.extend(child));
 return elements;
 }
 );
 },

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

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

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

 return matchingInputs;
 },

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

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

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

 return firstByIndex?firstByIndex :elements.find(function(element){
 return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
 });
 },

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

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

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

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

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

 return new Ajax.Request(action, options);
 }
};
Form.Element={
 focus:function(element){
 $(element).focus();
 return element;
 },

 select:function(element){
 $(element).select();
 return element;
 }
};
Form.Element.Methods={
 serialize:function(element){
 element=$(element);
 if(!element.disabled&&element.name){
 var value=element.getValue();
 if(value != undefined){
 var pair={};
 pair[element.name]=value;
 return Object.toQueryString(pair);
 }
 }
 return '';
 },
getValue:function(element){
 element=$(element);
 var method=element.tagName.toLowerCase();
 return Form.Element.Serializers[method](element);
 },

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

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

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

 activate:function(element){
 element=$(element);
 try{
 element.focus();
 if(element.select&&(element.tagName.toLowerCase() != 'input' ||
 !['button', 'reset', 'submit'].include(element.type)))
 element.select();
 } catch (e){}
 return element;
 },

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

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

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

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

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

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

 select:function(element, value){
 if(Object.isUndefined(value))
 return this[element.type=='select-one' ?
 'selectOne' :'selectMany'](element);
 else{
 var opt, currentValue, single=!Object.isArray(value);
 for(var i=0, length=element.length;i<length;i++){
 opt=element.options[i];
 currentValue=this.optionValue(opt);
 if(single){
 if(currentValue==value){
 opt.selected=true;
 return;
 }
 }
 else opt.selected=value.include(currentValue);
 }
 }
 },

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Form.EventObserver=Class.create(Abstract.EventObserver,{
 getValue:function(){
 return Form.serialize(this.element);
 }
});
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(event){
 var element;
 switch(event.type){
 case 'mouseover':element=event.fromElement; break;
 case 'mouseout':element=event.toElement; break;
 default:return null;
 }
 return Element.extend(element);
 }
});

Event.Methods=(function(){
 var isButton;

 if(Prototype.Browser.IE){
 var buttonMap={ 0:1, 1:4, 2:2 };
 isButton=function(event, code){
 return event.button==buttonMap[code];
 };

 } else if(Prototype.Browser.WebKit){
 isButton=function(event, code){
 switch (code){
 case 0:return event.which==1&&!event.metaKey;
 case 1:return event.which==1&&event.metaKey;
 default:return false;
 }
 };

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

 return{
 isLeftClick:function(event){ return isButton(event, 0) },
 isMiddleClick:function(event){ return isButton(event, 1) },
 isRightClick:function(event){ return isButton(event, 2) },

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

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

 if(currentTarget&&currentTarget.tagName){
 if(type==='load'||type==='error' ||
 (type==='click'&&currentTarget.tagName.toLowerCase()==='input'
 &&currentTarget.type==='radio'))
 node=currentTarget;
 }
 if(node.nodeType==Node.TEXT_NODE) node=node.parentNode;
 return Element.extend(node);
 },

 findElement:function(event, expression){
 var element=Event.element(event);
 if(!expression) return element;
 var elements=[element].concat(element.ancestors());
 return Selector.findElement(elements, expression, 0);
 },

 pointer:function(event){
 var docElement=document.documentElement,
 body=document.body||{ scrollLeft:0, scrollTop:0 };
 return{
 x:event.pageX||(event.clientX +
 (docElement.scrollLeft||body.scrollLeft) -
 (docElement.clientLeft||0)),
 y:event.pageY||(event.clientY +
 (docElement.scrollTop||body.scrollTop) -
 (docElement.clientTop||0))
 };
 },

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

 stop:function(event){
 Event.extend(event);
 event.preventDefault();
 event.stopPropagation();
 event.stopped=true;
 }
 };
})();

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

 if(Prototype.Browser.IE){
 Object.extend(methods,{
 stopPropagation:function(){ this.cancelBubble=true },
 preventDefault:function(){ this.returnValue=false },
 inspect:function(){ return "[object Event]" }
 });

 return function(event){
 if(!event) return false;
 if(event._extendedByPrototype) return event;

 event._extendedByPrototype=Prototype.emptyFunction;
 var pointer=Event.pointer(event);
 Object.extend(event,{
 target:event.srcElement,
 relatedTarget:Event.relatedTarget(event),
 pageX:pointer.x,
 pageY:pointer.y
 });
 return Object.extend(event, methods);
 };

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

Object.extend(Event, (function(){
 var cache=Event.cache;

 function getEventID(element){
 if(element._prototypeEventID) return element._prototypeEventID[0];
 arguments.callee.id=arguments.callee.id||1;
 return element._prototypeEventID=[++arguments.callee.id];
 }

 function getDOMEventName(eventName){
 if(eventName&&eventName.include(':')) return "dataavailable";
 return eventName;
 }

 function getCacheForID(id){
 return cache[id]=cache[id]||{};
 }

 function getWrappersForEventName(id, eventName){
 var c=getCacheForID(id);
 return c[eventName]=c[eventName]||[];
 }

 function createWrapper(element, eventName, handler){
 var id=getEventID(element);
 var c=getWrappersForEventName(id, eventName);
 if(c.pluck("handler").include(handler)) return false;

 var wrapper=function(event){
 if(!Event||!Event.extend ||
 (event.eventName&&event.eventName != eventName))
 return false;

 Event.extend(event);
 handler.call(element, event);
 };

 wrapper.handler=handler;
 c.push(wrapper);
 return wrapper;
 }

 function findWrapper(id, eventName, handler){
 var c=getWrappersForEventName(id, eventName);
 return c.find(function(wrapper){ return wrapper.handler==handler });
 }

 function destroyWrapper(id, eventName, handler){
 var c=getCacheForID(id);
 if(!c[eventName]) return false;
 c[eventName]=c[eventName].without(findWrapper(id, eventName, handler));
 }

 function destroyCache(){
 for(var id in cache)
 for(var eventName in cache[id])
 cache[id][eventName]=null;
 }
 if(window.attachEvent){
 window.attachEvent("onunload", destroyCache);
 }
 if(Prototype.Browser.WebKit){
 window.addEventListener('unload', Prototype.emptyFunction, false);
 }

 return{
 observe:function(element, eventName, handler){
 element=$(element);
 var name=getDOMEventName(eventName);

 var wrapper=createWrapper(element, eventName, handler);
 if(!wrapper) return element;

 if(element.addEventListener){
 element.addEventListener(name, wrapper, false);
 } else{
 element.attachEvent("on"+name, wrapper);
 }

 return element;
 },

 stopObserving:function(element, eventName, handler){
 element=$(element);
 var id=getEventID(element), name=getDOMEventName(eventName);

 if(!handler&&eventName){
 getWrappersForEventName(id, eventName).each(function(wrapper){
 element.stopObserving(eventName, wrapper.handler);
 });
 return element;

 } else if(!eventName){
 Object.keys(getCacheForID(id)).each(function(eventName){
 element.stopObserving(eventName);
 });
 return element;
 }

 var wrapper=findWrapper(id, eventName, handler);
 if(!wrapper) return element;

 if(element.removeEventListener){
 element.removeEventListener(name, wrapper, false);
 } else{
 element.detachEvent("on"+name, wrapper);
 }

 destroyWrapper(id, eventName, handler);

 return element;
 },

 fire:function(element, eventName, memo){
 element=$(element);
 if(element==document&&document.createEvent&&!element.dispatchEvent)
 element=document.documentElement;

 var event;
 if(document.createEvent){
 event=document.createEvent("HTMLEvents");
 event.initEvent("dataavailable", true, true);
 } else{
 event=document.createEventObject();
 event.eventType="ondataavailable";
 }

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

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

 return Event.extend(event);
 }
 };
})());

Object.extend(Event, Event.Methods);

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 timer;

 function fireContentLoadedEvent(){
 if(document.loaded) return;
 if(timer) window.clearInterval(timer);
 document.fire("dom:loaded");
 document.loaded=true;
 }

 if(document.addEventListener){
 if(Prototype.Browser.WebKit){
 timer=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(element, content){
 return Element.insert(element,{before:content});
 },

 Top:function(element, content){
 return Element.insert(element,{top:content});
 },

 Bottom:function(element, content){
 return Element.insert(element,{bottom:content});
 },

 After:function(element, content){
 return Element.insert(element,{after:content});
 }
};

var $continue=new Error('"throw $continue" is deprecated, use "return" instead');
var Position={
 includeScrollOffsets:false,
 prepare:function(){
 this.deltaX= window.pageXOffset
 ||document.documentElement.scrollLeft
 ||document.body.scrollLeft
 ||0;
 this.deltaY= window.pageYOffset
 ||document.documentElement.scrollTop
 ||document.body.scrollTop
 ||0;
 },
 within:function(element, x, y){
 if(this.includeScrollOffsets)
 return this.withinIncludingScrolloffsets(element, x, y);
 this.xcomp=x;
 this.ycomp=y;
 this.offset=Element.cumulativeOffset(element);

 return (y >= this.offset[1] &&
 y< this.offset[1]+element.offsetHeight &&
 x >= this.offset[0] &&
 x< this.offset[0]+element.offsetWidth);
 },

 withinIncludingScrolloffsets:function(element, x, y){
 var offsetcache=Element.cumulativeScrollOffset(element);

 this.xcomp=x+offsetcache[0]-this.deltaX;
 this.ycomp=y+offsetcache[1]-this.deltaY;
 this.offset=Element.cumulativeOffset(element);

 return (this.ycomp >= this.offset[1] &&
 this.ycomp< this.offset[1]+element.offsetHeight &&
 this.xcomp >= this.offset[0] &&
 this.xcomp< this.offset[0]+element.offsetWidth);
 },
 overlap:function(mode, element){
 if(!mode) return 0;
 if(mode=='vertical')
 return ((this.offset[1]+element.offsetHeight)-this.ycomp)/element.offsetHeight;
 
 if(mode=='horizontal')
 return ((this.offset[0]+element.offsetWidth)-this.xcomp)/element.offsetWidth;
 },
 cumulativeOffset:Element.Methods.cumulativeOffset,
 positionedOffset:Element.Methods.positionedOffset,
 absolutize:function(element){
 Position.prepare();
 return Element.absolutize(element);
 },
 relativize:function(element){
 Position.prepare();
 return Element.relativize(element);
 },
 realOffset:Element.Methods.cumulativeScrollOffset,
 offsetParent:Element.Methods.getOffsetParent,
 page:Element.Methods.viewportOffset,
 clone:function(source, target, options){
 options=options||{};
 return Element.clonePosition(target, source, options);
 }
};
if(!document.getElementsByClassName) document.getElementsByClassName=function(instanceMethods){
 function iter(name){
 return name.blank()?null :"[contains(concat(' ', @class, ' '), ' "+name+" ')]";
 }

 instanceMethods.getElementsByClassName=Prototype.BrowserFeatures.XPath ?
 function(element, className){className=className.toString().strip();var cond=/\s/.test(className)?$w(className).map(iter).join('') :iter(className);
 return cond?document._getElementsByXPath('.//*'+cond, element) :[];} :function(element, className){className=className.toString().strip();var elements=[], classNames=(/\s/.test(className)?$w(className) :null);if(!classNames&&!className) return elements;var nodes=$(element).getElementsByTagName('*');className=' '+className+' ';
 for(var i=0, child, cn; child=nodes[i];i++){
 if(child.className&&(cn=' '+child.className+' ')&&(cn.include(className) ||
 (classNames&&classNames.all(function(name){
 return !name.toString().blank()&&cn.include(' '+name+' ');
 })))) elements.push(Element.extend(child));}return elements;};return function(className, parentElement){return $(parentElement||document.body).getElementsByClassName(className);};}(Element.Methods);Element.ClassNames=Class.create();Element.ClassNames.prototype={initialize:function(element){this.element=$(element);},_each:function(iterator){this.element.className.split(/\s+/).select(function(name){return name.length>0;})._each(iterator);},set:function(className){this.element.className=className;},add:function(classNameToAdd){if(this.include(classNameToAdd)) return;this.set($A(this).concat(classNameToAdd).join(' '));},remove:function(classNameToRemove){if(!this.include(classNameToRemove))return;this.set($A(this).without(classNameToRemove).join(' '));},toString:function(){return $A(this).join(' ');}};Object.extend(Element.ClassNames.prototype, Enumerable);Element.addMethods();