var Fx=new Class({Implements:[Chain,Events,Options],options:{fps:50,unit:false,duration:500,link:"ignore"},initialize:function(a){this.subject=this.subject||this;this.setOptions(a);this.options.duration=Fx.Durations[this.options.duration]||this.options.duration.toInt();var b=this.options.wait;if(b===false){this.options.link="cancel"}},getTransition:function(){return function(a){return -(Math.cos(Math.PI*a)-1)/2}},step:function(){var a=$time();if(a<this.time+this.options.duration){var b=this.transition((a-this.time)/this.options.duration);this.set(this.compute(this.from,this.to,b))}else{this.set(this.compute(this.from,this.to,1));this.complete()}},set:function(a){return a},compute:function(c,b,a){return Fx.compute(c,b,a)},check:function(a){if(!this.timer){return true}switch(this.options.link){case"cancel":this.cancel();return true;case"chain":this.chain(a.bind(this,Array.slice(arguments,1)));return false}return false},start:function(b,a){if(!this.check(arguments.callee,b,a)){return this}this.from=b;this.to=a;this.time=0;this.transition=this.getTransition();this.startTimer();this.onStart();return this},complete:function(){if(this.stopTimer()){this.onComplete()}return this},cancel:function(){if(this.stopTimer()){this.onCancel()}return this},onStart:function(){this.fireEvent("start",this.subject)},onComplete:function(){this.fireEvent("complete",this.subject);if(!this.callChain()){this.fireEvent("chainComplete",this.subject)}},onCancel:function(){this.fireEvent("cancel",this.subject).clearChain()},pause:function(){this.stopTimer();return this},resume:function(){this.startTimer();return this},stopTimer:function(){if(!this.timer){return false}this.time=$time()-this.time;this.timer=$clear(this.timer);return true},startTimer:function(){if(this.timer){return false}this.time=$time()-this.time;this.timer=this.step.periodical(Math.round(1000/this.options.fps),this);return true}});Fx.compute=function(c,b,a){return(b-c)*a+c};Fx.Durations={"short":250,normal:500,"long":1000};Fx.CSS=new Class({Extends:Fx,prepare:function(d,e,b){b=$splat(b);var c=b[1];if(!$chk(c)){b[1]=b[0];b[0]=d.getStyle(e)}var a=b.map(this.parse);return{from:a[0],to:a[1]}},parse:function(a){a=$lambda(a)();a=(typeof a=="string")?a.split(" "):$splat(a);return a.map(function(c){c=String(c);var b=false;Fx.CSS.Parsers.each(function(f,e){if(b){return}var d=f.parse(c);if($chk(d)){b={value:d,parser:f}}});b=b||{value:c,parser:Fx.CSS.Parsers.String};return b})},compute:function(d,c,b){var a=[];(Math.min(d.length,c.length)).times(function(e){a.push({value:d[e].parser.compute(d[e].value,c[e].value,b),parser:d[e].parser})});a.$family={name:"fx:css:value"};return a},serve:function(c,b){if($type(c)!="fx:css:value"){c=this.parse(c)}var a=[];c.each(function(d){a=a.concat(d.parser.serve(d.value,b))});return a},render:function(a,d,c,b){a.setStyle(d,this.serve(c,b))},search:function(a){if(Fx.CSS.Cache[a]){return Fx.CSS.Cache[a]}var b={};Array.each(document.styleSheets,function(e,d){var c=e.href;if(c&&c.contains("://")&&!c.contains(document.domain)){return}var f=e.rules||e.cssRules;Array.each(f,function(j,g){if(!j.style){return}var h=(j.selectorText)?j.selectorText.replace(/^\w+/,function(i){return i.toLowerCase()}):null;if(!h||!h.test("^"+a+"$")){return}Element.Styles.each(function(k,i){if(!j.style[i]||Element.ShortStyles[i]){return}k=String(j.style[i]);b[i]=(k.test(/^rgb/))?k.rgbToHex():k})})});return Fx.CSS.Cache[a]=b}});Fx.CSS.Cache={};Fx.CSS.Parsers=new Hash({Color:{parse:function(a){if(a.match(/^#[0-9a-f]{3,6}$/i)){return a.hexToRgb(true)}return((a=a.match(/(\d+),\s*(\d+),\s*(\d+)/)))?[a[1],a[2],a[3]]:false},compute:function(c,b,a){return c.map(function(e,d){return Math.round(Fx.compute(c[d],b[d],a))})},serve:function(a){return a.map(Number)}},Number:{parse:parseFloat,compute:Fx.compute,serve:function(b,a){return(a)?b+a:b}},String:{parse:$lambda(false),compute:$arguments(1),serve:$arguments(0)}});Fx.Tween=new Class({Extends:Fx.CSS,initialize:function(b,a){this.element=this.subject=$(b);this.parent(a)},set:function(b,a){if(arguments.length==1){a=b;b=this.property||this.options.property}this.render(this.element,b,a,this.options.unit);return this},start:function(c,e,d){if(!this.check(arguments.callee,c,e,d)){return this}var b=Array.flatten(arguments);this.property=this.options.property||b.shift();var a=this.prepare(this.element,this.property,b);return this.parent(a.from,a.to)}});Element.Properties.tween={set:function(a){var b=this.retrieve("tween");if(b){b.cancel()}return this.eliminate("tween").store("tween:options",$extend({link:"cancel"},a))},get:function(a){if(a||!this.retrieve("tween")){if(a||!this.retrieve("tween:options")){this.set("tween",a)}this.store("tween",new Fx.Tween(this,this.retrieve("tween:options")))}return this.retrieve("tween")}};Element.implement({tween:function(a,c,b){this.get("tween").start(arguments);return this},fade:function(c){var e=this.get("tween"),d="opacity",a;c=$pick(c,"toggle");switch(c){case"in":e.start(d,1);break;case"out":e.start(d,0);break;case"show":e.set(d,1);break;case"hide":e.set(d,0);break;case"toggle":var b=this.retrieve("fade:flag",this.get("opacity")==1);e.start(d,(b)?0:1);this.store("fade:flag",!b);a=true;break;default:e.start(d,arguments)}if(!a){this.eliminate("fade:flag")}return this},highlight:function(c,a){if(!a){a=this.retrieve("highlight:original",this.getStyle("background-color"));a=(a=="transparent")?"#fff":a}var b=this.get("tween");b.start("background-color",c||"#ffff88",a).chain(function(){this.setStyle("background-color",this.retrieve("highlight:original"));b.callChain()}.bind(this));return this}});Fx.Morph=new Class({Extends:Fx.CSS,initialize:function(b,a){this.element=this.subject=$(b);this.parent(a)},set:function(a){if(typeof a=="string"){a=this.search(a)}for(var b in a){this.render(this.element,b,a[b],this.options.unit)}return this},compute:function(e,d,c){var a={};for(var b in e){a[b]=this.parent(e[b],d[b],c)}return a},start:function(b){if(!this.check(arguments.callee,b)){return this}if(typeof b=="string"){b=this.search(b)}var e={},d={};for(var c in b){var a=this.prepare(this.element,c,b[c]);e[c]=a.from;d[c]=a.to}return this.parent(e,d)}});Element.Properties.morph={set:function(a){var b=this.retrieve("morph");if(b){b.cancel()}return this.eliminate("morph").store("morph:options",$extend({link:"cancel"},a))},get:function(a){if(a||!this.retrieve("morph")){if(a||!this.retrieve("morph:options")){this.set("morph",a)}this.store("morph",new Fx.Morph(this,this.retrieve("morph:options")))}return this.retrieve("morph")}};Element.implement({morph:function(a){this.get("morph").start(a);return this}});Fx.implement({getTransition:function(){var a=this.options.transition||Fx.Transitions.Sine.easeInOut;if(typeof a=="string"){var b=a.split(":");a=Fx.Transitions;a=a[b[0]]||a[b[0].capitalize()];if(b[1]){a=a["ease"+b[1].capitalize()+(b[2]?b[2].capitalize():"")]}}return a}});Fx.Transition=function(b,a){a=$splat(a);return $extend(b,{easeIn:function(c){return b(c,a)},easeOut:function(c){return 1-b(1-c,a)},easeInOut:function(c){return(c<=0.5)?b(2*c,a)/2:(2-b(2*(1-c),a))/2}})};Fx.Transitions=new Hash({linear:$arguments(0)});Fx.Transitions.extend=function(a){for(var b in a){Fx.Transitions[b]=new Fx.Transition(a[b])}};Fx.Transitions.extend({Pow:function(b,a){return Math.pow(b,a[0]||6)},Expo:function(a){return Math.pow(2,8*(a-1))},Circ:function(a){return 1-Math.sin(Math.acos(a))},Sine:function(a){return 1-Math.sin((1-a)*Math.PI/2)},Back:function(b,a){a=a[0]||1.618;return Math.pow(b,2)*((a+1)*b-a)},Bounce:function(f){var e;for(var d=0,c=1;1;d+=c,c/=2){if(f>=(7-4*d)/11){e=c*c-Math.pow((11-6*d-11*f)/4,2);break}}return e},Elastic:function(b,a){return Math.pow(2,10*--b)*Math.cos(20*b*Math.PI*(a[0]||1)/3)}});["Quad","Cubic","Quart","Quint"].each(function(b,a){Fx.Transitions[b]=new Fx.Transition(function(c){return Math.pow(c,[a+2])})});var Asset={javascript:function(f,d){d=$extend({onload:$empty,document:document,check:$lambda(true)},d);var b=new Element("script",{src:f,type:"text/javascript"});var e=d.onload.bind(b),a=d.check,g=d.document;delete d.onload;delete d.check;delete d.document;b.addEvents({load:e,readystatechange:function(){if(["loaded","complete"].contains(this.readyState)){e()}}}).set(d);if(Browser.Engine.webkit419){var c=(function(){if(!$try(a)){return}$clear(c);e()}).periodical(50)}return b.inject(g.head)},css:function(b,a){return new Element("link",$merge({rel:"stylesheet",media:"screen",type:"text/css",href:b},a)).inject(document.head)},image:function(c,b){b=$merge({onload:$empty,onabort:$empty,onerror:$empty},b);var d=new Image();var a=$(d)||new Element("img");["load","abort","error"].each(function(e){var f="on"+e;var g=b[f];delete b[f];d[f]=function(){if(!d){return}if(!a.parentNode){a.width=d.width;a.height=d.height}d=d.onload=d.onabort=d.onerror=null;g.delay(1,a,a);a.fireEvent(e,a,1)}});d.src=a.src=c;if(d&&d.complete){d.onload.delay(1)}return a.set(b)},images:function(d,c){c=$merge({onComplete:$empty,onProgress:$empty,onError:$empty},c);d=$splat(d);var a=[];var b=0;return new Elements(d.map(function(e){return Asset.image(e,{onload:function(){c.onProgress.call(this,b,d.indexOf(e));b++;if(b==d.length){c.onComplete()}},onerror:function(){c.onError.call(this,b,d.indexOf(e));b++;if(b==d.length){c.onComplete()}}})}))}};