/*
Script: Slideshow.js (http://code.google.com/p/slideshow/).
License: MIT-style license.
Copyright: Copyright (c) 2008 [Aeron Glemann](http://www.electricprism.com/aeron/).
*/

Slideshow=new Class({Implements:[Chain,Events,Options],options:{captions:false,center:true,classes:[],controller:false,delay:2000,duration:750,fast:false,height:false,href:"",hu:"/",linked:false,loader:{animate:["css/loader-#.png",12]},loop:true,match:/\?slide=(\d+)$/,overlap:true,paused:false,quick:false,random:false,replace:[/\.(.{3})$/,"t.$1"],resize:true,slide:0,thumbnails:false,transition:function(A){return -(Math.cos(Math.PI*A)-1)/2},width:false},initialize:function(B,D,J){this.setOptions(J);this.slideshow=$(B);if(!this.slideshow){return }this.slideshow.set("styles",{display:"block",position:"relative"});var I=["slideshow","first","prev","play","pause","next","last","images","captions","controller","thumbnails","hidden","visible","inactive","active","loader"];var H=I.map(function(L,K){return this.options.classes[K]||L},this);this.classes=H.associate(I);this.classes.get=function(){var M="."+this.slideshow;for(var L=0,K=arguments.length;L<K;L++){M+=("-"+this[arguments[L]])}return M}.bind(this.classes);var E=this.slideshow.getElement("a")||new Element("a");if(!this.options.href){this.options.href=E.get("href")||""}if(this.options.hu.substr(-1)!="/"){this.options.hu+="/"}if(!D){D={};this.slideshow.getElements(this.classes.get("images")+" img").each(function(L){var M=L.getParent();var K=M.get("href")||"";var N=L.get("src").split("/").getLast();D[N]={caption:L.get("alt"),href:K}})}this.load(D);if(!this.data.images.length){return }var F=window.location.href.match(this.options.match);this.counter=0;this.slide=(this.options.match&&F)?F[1]%this.data.images.length:this.options.slide;this.paused=this.stopped=false;if(!this.options.overlap){this.options.duration*=2}var B=this.slideshow.getElement("img");this.a=this.image=(B)?B:new Element("img");this.a.set({src:this.options.hu+this.data.images[this.slide],styles:{display:"block",position:"absolute",zIndex:1}});var C=this.a.getSize();this.width=(this.options.width||C.x);this.height=(this.options.height||C.y);if(this.options.width||this.options.height){this._resize(this.a,C.x,C.y)}var B=this.slideshow.getElement(this.classes.get("images"));var G=(B)?B.empty():new Element("div",{"class":this.classes.get("images").substr(1)}).inject(this.slideshow);G.set({styles:{display:"block",height:this.height,overflow:"hidden",position:"relative",width:this.width}});this.slideshow.store("images",G);if(this.data.hrefs[this.slide]){E.set("href",this.data.hrefs[this.slide])}E.clone().grab(this.a).inject(G);this.b=this.a.clone().setStyle("visibility","hidden");E.clone().grab(this.b).inject(G);this.events=$H({keydown:[],keyup:[],mousemove:[]});if(this.options.loader){this.loader()}if(this.options.captions){this.captions()}if(this.options.controller){this.controller()}if(this.options.thumbnails){this.thumbnails()}var A=function(K){switch(K.key){case"left":this.prev(K.shift);break;case"right":this.next(K.shift);break;case"space":this.pause();break}}.bind(this);this.events.keyup.push(A);document.addEvent("keyup",A);if(this.options.paused){this.pause()}if(this.data.images.length>1){this.loaded(this.options.quick)}},load:function(C){this.showed={array:[],i:0};if($type(C)=="array"){this.options.captions=false;C=new Array(C.length).associate(C)}this.data={images:[],captions:[],hrefs:[],thumbnails:[]};for(image in C){var D=C[image]||{};var B=(D.caption)?D.caption.trim():"";var A=(D.href)?D.href.trim():((this.options.linked)?this.options.hu+image:this.options.href);var E=(D.thumbnail)?D.thumbnail.trim():image.replace(this.options.replace[0],this.options.replace[1]);this.data.images.push(image);this.data.captions.push(B);this.data.hrefs.push(A);this.data.thumbnails.push(E)}if(this.options.thumbnails&&this.slideshow.retrieve("thumbnails")){this.thumbnails()}if(this.slideshow.retrieve("images")){[this.a,this.b].each(function(F){["morph","tween"].each(function(G){if(this.retrieve(G)){this.get(G).cancel()}},F)});this.slide=this.transition=0;this.go(0)}return this.data.images.length},preload:function(A){if(this.preloader.complete&&$time()>this.delay&&$time()>this.transition){if(this.stopped){if(this.options.captions){this.slideshow.retrieve("captions").get("morph").cancel().start(this.classes.get("captions","hidden"))}this.pause(1);return }this.image=(this.counter%2)?this.b:this.a;this.image.set({src:this.preloader.get("src"),styles:{height:"auto",visibility:"hidden",width:"auto",zIndex:this.counter}});this._resize(this.image,this.preloader.width,this.preloader.height);var B=this.image.getParent();if(this.data.hrefs[this.slide]){B.set("href",this.data.hrefs[this.slide])}else{B.erase("href")}if(this.options.loader){this.slideshow.retrieve("loader").fireEvent("hide")}if(this.options.captions){this.slideshow.retrieve("captions").fireEvent("update",A)}if(this.options.thumbnails){this.slideshow.retrieve("thumbnails").fireEvent("update",A)}this.show(A);this.loaded()}else{if($time()>this.delay&&this.options.loader){this.slideshow.retrieve("loader").fireEvent("show")}this.timer=(this.paused)?null:this.preload.delay(100,this,A)}},show:function(B){if(!this.image.retrieve("morph")){var C=(this.options.overlap)?{duration:this.options.duration,link:"cancel"}:{duration:this.options.duration/2,link:"chain"};$$(this.a,this.b).set("morph",$merge(C,{transition:this.options.transition}))}this._center(this.image);var E=this.classes.get("images",((this.direction=="left")?"next":"prev"));var F=this.classes.get("images","visible");if(B){this.image.get("morph").cancel().set(F)}else{var A=(this.counter%2)?this.a:this.b;if(this.options.overlap){A.get("morph").set(F);this.image.get("morph").set(E).start(F)}else{var D=function(G,H){this.image.get("morph").set(G).start(H)}.pass([E,F],this);var E=this.classes.get("images",((this.direction=="left")?"prev":"next"));A.get("morph").set(F).start(E).chain(D)}}},loaded:function(A){this.counter++;if(this.paused){this.delay=Number.MAX_VALUE;this.transition=0}else{this.delay=(A)?0:$time()+this.options.duration+this.options.delay;this.transition=(A||this.options.fast)?0:$time()+this.options.duration}this.direction="left";if(this.slide+1==this.data.images.length&&!this.options.loop&&!this.options.random){this.stopped=true}if(this.options.random){this.showed.i++;if(this.showed.i>=this.showed.array.length){var B=this.slide;if(this.showed.array.getLast()!=B){this.showed.array.push(B)}while(this.slide==B){this.slide=$random(0,this.data.images.length-1)}}else{this.slide=this.showed.array[this.showed.i]}}else{this.slide=(this.slide+1)%this.data.images.length}if(this.preloader){this.preloader.destroy()}this.preloader=new Asset.image(this.options.hu+this.data.images[this.slide]);this.preload()},first:function(){this.prev(true)},go:function(B,A){if((this.slide-1+this.data.images.length)%this.data.images.length==B||$time()<this.transition){return }$clear(this.timer);this.delay=0;this.direction=(A)?A:((B<this.slide)?"right":"left");this.slide=B;if(this.preloader){this.preloader.destroy()}this.preloader=new Asset.image(this.options.hu+this.data.images[this.slide]);this.preload(this.options.fast||this.paused)},last:function(){this.next(true)},next:function(A){var B=(A)?this.data.images.length-1:this.slide;this.go(B,"left")},pause:function(A){if($chk(A)){this.paused=(A)?false:true}if(this.paused){this.paused=this.stopped=false;this.delay=this.transition=0;this.timer=this.preload.delay(100,this);[this.a,this.b].each(function(B){["morph","tween"].each(function(C){if(this.retrieve(C)){this.get(C).resume()}},B)});if(this.options.controller){this.slideshow.getElement("."+this.classes.pause).removeClass(this.classes.play)}}else{this.paused=true;this.delay=Number.MAX_VALUE;this.transition=0;$clear(this.timer);[this.a,this.b].each(function(B){["morph","tween"].each(function(C){if(this.retrieve(C)){this.get(C).pause()}},B)});if(this.options.controller){this.slideshow.getElement("."+this.classes.pause).addClass(this.classes.play)}}},prev:function(A){if(A){var B=0}else{if(this.options.random){if(this.showed.i<2){return }this.showed.i-=2;var B=this.showed.array[this.showed.i]}else{var B=(this.slide-2+this.data.images.length)%this.data.images.length}}this.go(B,"right")},loader:function(){if(this.options.loader===true){this.options.loader={}}var A=new Element("div",{"class":this.classes.get("loader").substr(1),morph:$merge(this.options.loader,{link:"cancel"})}).store("hidden",false).store("i",1).inject(this.slideshow.retrieve("images"));if(this.options.loader.animate){for(var B=0;B<this.options.loader.animate[1];B++){img=new Asset.image(this.options.loader.animate[0].replace(/#/,B))}if(Browser.trident4&&this.options.loader.animate[0].contains("png")){A.setStyle("backgroundImage","none")}}A.set("events",{animate:function(){var C=this.slideshow.retrieve("loader");var E=(C.retrieve("i").toInt()+1)%this.options.loader.animate[1];C.store("i",E);var D=this.options.loader.animate[0].replace(/#/,E);if(Browser.trident4&&this.options.loader.animate[0].contains("png")){C.style.filter='progid:DXImageTransform.Microsoft.AlphaImageLoader(src="'+D+'", sizingMethod="scale")'}else{C.setStyle("backgroundImage","url("+D+")")}}.bind(this),hide:function(){var C=this.slideshow.retrieve("loader");if(!C.retrieve("hidden")){C.store("hidden",true).morph(this.classes.get("loader","hidden"));if(this.options.loader.animate){$clear(C.retrieve("timer"))}}}.bind(this),show:function(){var C=this.slideshow.retrieve("loader");if(C.retrieve("hidden")){C.store("hidden",false).morph(this.classes.get("loader","visible"));if(this.options.loader.animate){C.store("timer",function(){this.fireEvent("animate")}.periodical(50,C))}}}.bind(this)});this.slideshow.retrieve("loader",A).fireEvent("hide")},captions:function(){if(this.options.captions===true){this.options.captions={}}var B=this.slideshow.getElement(this.classes.get("captions"));var A=(B)?B.empty():new Element("div",{"class":this.classes.get("captions").substr(1)}).inject(this.slideshow);A.set({events:{update:function(D){var C=this.slideshow.retrieve("captions");var F=(this.data.captions[this.slide]=="");if(D){var G=(F)?"hidden":"visible";C.set("html",this.data.captions[this.slide]).get("morph").cancel().set(this.classes.get("captions",G))}else{var E=(F)?$empty:function(H){this.slideshow.retrieve("captions").set("html",this.data.captions[H]).morph(this.classes.get("captions","visible"))}.pass(this.slide,this);C.get("morph").cancel().start(this.classes.get("captions","hidden")).chain(E)}}.bind(this)},morph:$merge(this.options.captions,{link:"chain"})});this.slideshow.retrieve("captions",A).fireEvent("update")},controller:function(){if(this.options.controller===true){this.options.controller={}}var E=this.slideshow.getElement(this.classes.get("controller"));var A=(E)?E.empty():new Element("div",{"class":this.classes.get("controller").substr(1)}).inject(this.slideshow);var C=new Element("ul").inject(A);$H({first:"⇧←",prev:"←",pause:"space",next:"→",last:"⇧→"}).each(function(J,I){var G=new Element("li",{"class":this.classes[I]}).inject(C);var H=this.slideshow.retrieve(I,new Element("a",{title:((I=="pause")?this.classes.play.capitalize()+" / ":"")+this.classes[I].capitalize()+" ["+J+"]"}).inject(G));H.set("events",{click:function(K){this[K]()}.pass(I,this),mouseenter:function(K){this.addClass(K)}.pass(this.classes.active,H),mouseleave:function(K){this.removeClass(K)}.pass(this.classes.active,H)})},this);A.set({events:{hide:function(G){if(!this.retrieve("hidden")){this.store("hidden",true).morph(G)}}.pass(this.classes.get("controller","hidden"),A),show:function(G){if(this.retrieve("hidden")){this.store("hidden",false).morph(G)}}.pass(this.classes.get("controller","visible"),A)},morph:$merge(this.options.controller,{link:"cancel"})}).store("hidden",false);var B=function(H){if(H.key.test(/left|right|space/)){var G=this.slideshow.retrieve("controller");if(G.retrieve("hidden")){G.get("morph").set(this.classes.get("controller","visible"))}switch(H.key){case"left":this.slideshow.retrieve((H.shift)?"first":"prev").fireEvent("mouseenter");break;case"right":this.slideshow.retrieve((H.shift)?"last":"next").fireEvent("mouseenter");break;default:this.slideshow.retrieve("pause").fireEvent("mouseenter")}}}.bind(this);this.events.keydown.push(B);var F=function(H){if(H.key.test(/left|right|space/)){var G=this.slideshow.retrieve("controller");if(G.retrieve("hidden")){G.store("hidden",false).fireEvent("hide")}switch(H.key){case"left":this.slideshow.retrieve((H.shift)?"first":"prev").fireEvent("mouseleave");break;case"right":this.slideshow.retrieve((H.shift)?"last":"next").fireEvent("mouseleave");break;default:this.slideshow.retrieve("pause").fireEvent("mouseleave")}}}.bind(this);this.events.keyup.push(F);var D=function(H){var G=this.slideshow.retrieve("images").getCoordinates();if(H.page.x>G.left&&H.page.x<G.right&&H.page.y>G.top&&H.page.y<G.bottom){this.slideshow.retrieve("controller").fireEvent("show")}else{this.slideshow.retrieve("controller").fireEvent("hide")}}.bind(this);this.events.mousemove.push(D);document.addEvents({keydown:B,keyup:F,mousemove:D});this.slideshow.retrieve("controller",A).fireEvent("hide")},thumbnails:function(){if(this.options.thumbnails===true){this.options.thumbnails={}}var C=this.slideshow.getElement(this.classes.get("thumbnails"));var E=(C)?C.empty():new Element("div",{"class":this.classes.get("thumbnails").substr(1)}).inject(this.slideshow);E.setStyle("overflow","hidden");var A=new Element("ul",{tween:{link:"cancel"}}).inject(E);this.data.thumbnails.each(function(J,I){var F=new Element("li").inject(A);var G=new Element("a",{events:{click:function(K){this.go(K);return false}.pass(I,this),loaded:function(){this.data.thumbnails.pop();if(!this.data.thumbnails.length){var O=E.getCoordinates();var M=E.retrieve("props");var K=0,N=M[1],L=M[2];E.getElements("li").each(function(P){var P=P.getCoordinates();if(P[N]>K){K=P[N]}},this);E.store("limit",O[L]+O[M[0]]-K)}}.bind(this)},href:this.options.hu+this.data.images[I],morph:$merge(this.options.thumbnails,{link:"cancel"}),title:this.data.captions[I]}).inject(F);var H=new Asset.image(this.options.hu+J,{onload:function(){this.fireEvent("loaded")}.bind(G)}).inject(G)},this);E.set("events",{scroll:function(H,K){var F=this.getCoordinates();var L=this.getElement("ul").getPosition();var N=this.retrieve("props");var I=N[3],R,O=N[0],T=N[2];var S=this.getElement("ul").get("tween",{property:O});if($chk(H)){var Q=this.getElements("li")[H].getCoordinates();var R=F[O]+(F[T]/2)-(Q[T]/2)-Q[O];var P=(L[I]-F[O]+R).limit(this.retrieve("limit"),0);if(K){S.set(P)}else{S.start(P)}}else{var G=F[N[2]]/3,M=this.retrieve("page"),J=-0.2;if(M[I]<(F[O]+G)){R=(M[I]-F[O]-G)*J}else{if(M[I]>(F[O]+F[T]-G)){R=(M[I]-F[O]-F[T]+G)*J}}if(R){var P=(L[I]-F[O]+R).limit(this.retrieve("limit"),0);S.set(P)}}}.bind(E),update:function(F){var G=this.slideshow.retrieve("thumbnails");G.getElements("a").each(function(H,I){if(I==this.slide){if(!H.retrieve("active",false)){H.store("active",true);var K=this.classes.get("thumbnails","active");if(F){H.get("morph").set(K)}else{H.morph(K)}}}else{if(H.retrieve("active",true)){H.store("active",false);var J=this.classes.get("thumbnails","inactive");if(F){H.get("morph").set(J)}else{H.morph(J)}}}},this);if(!G.retrieve("mouseover")){G.fireEvent("scroll",[this.slide,F])}}.bind(this)});var D=E.getCoordinates();E.store("props",(D.height>D.width)?["top","bottom","height","y"]:["left","right","width","x"]);var B=function(F){var G=this.getCoordinates();if(F.page.x>G.left&&F.page.x<G.right&&F.page.y>G.top&&F.page.y<G.bottom){this.store("page",F.page);if(!this.retrieve("mouseover")){this.store("mouseover",true);this.store("timer",function(){this.fireEvent("scroll")}.periodical(50,this))}}else{if(this.retrieve("mouseover")){this.store("mouseover",false);$clear(this.retrieve("timer"))}}}.bind(E);this.events.mousemove.push(B);document.addEvent("mousemove",B);this.slideshow.retrieve("thumbnails",E).fireEvent("update",true)},destroy:function(A){this.events.each(function(C,B){C.each(function(D){document.removeEvent(B,D)})});this.pause(1);if(this.options.loader){$clear(this.slideshow.retrieve("loader").retrieve("timer"))}if(this.options.thumbnails){$clear(this.slideshow.retrieve("thumbnails").retrieve("timer"))}Element.Storage[this.slideshow.uid]={};if(A){$try(this.slideshow[A]())}},_center:function(A){if(this.options.center){var B=A.getSize();A.set("styles",{left:(B.x-this.width)/-2,top:(B.y-this.height)/-2})}},_resize:function(B,A,D){if(this.options.resize){var E=this.height/D;var C=this.width/A;var F=(C>E)?C:E;B.set("styles",{height:Math.ceil(D*F),width:Math.ceil(A*F)})}}});