var SlideShow=new Class({Implements:[Options,Events,Loop],options:{delay:7000,transition:'crossFade',duration:'500',autoplay:false,slides:false},initialize:function(element,options){this.setOptions(options);this.setLoop(this.showNext,this.options.delay);this.element=document.id(element);this.slides=(!this.options.slides)?this.element.getChildren():this.options.slides;this.current=this.slides[0];this.transitioning=false;this.setup();if(this.options.autoplay)this.play();},setup:function(){this.setupElement().setupSlides(true);return this;},setupElement:function(){var el=this.element;if(el.getStyle('position')!='absolute'&&el!=document.body)el.setStyle('position','relative');if(el.getStyle('overflow')!='hidden'&&el!=document.body)el.setStyle('overflow','hidden');return this;},setupSlides:function(hideFirst){this.slides.each(function(slide,index){this.storeTransition(slide).reset(slide);if(hideFirst&&index!=0)slide.setStyle('display','none');},this);return this;},storeTransition:function(slide){var classes=slide.get('class');var transitionRegex=/transition:[a-zA-Z]+/;var durationRegex=/duration:[0-9]+/;var transition=(classes.match(transitionRegex))?classes.match(transitionRegex)[0].split(':')[1]:this.options.transition;var duration=(classes.match(durationRegex))?classes.match(durationRegex)[0].split(':')[1]:this.options.duration;slide.store('ssTransition',transition).store('ssDuration',duration);return this;},resetOptions:function(options){this.options=$merge(this.options,options);this.setupSlides(false);return this;},getTransition:function(slide){return slide.retrieve('ssTransition');},getDuration:function(slide){return slide.retrieve('ssDuration');},show:function(slide,options){slide=(typeof slide=='number')?this.slides[slide]:slide;if(slide!=this.current&&!this.transitioning){this.transitioning=true;var transition=(options&&options.transition)?options.transition:this.getTransition(slide),duration=(options&&options.duration)?options.duration:this.getDuration(slide),previous=this.current.setStyle('z-index',1),next=this.reset(slide);var slideData={previous:{element:previous,index:this.slides.indexOf(previous)},next:{element:next,index:this.slides.indexOf(next)}};this.fireEvent('show',slideData);this.transitions[transition](previous,next,duration,this);(function(){previous.setStyle('display','none');this.fireEvent('showComplete',slideData);this.transitioning=false;}).bind(this).delay(duration);this.current=next;}
return this;},reset:function(slide){return slide.setStyles({'position':'absolute','z-index':0,'display':'block','left':0,'top':0}).fade('show');},nextSlide:function(){var next=((this.slides.indexOf(this.current)+1)==this.slides.length)?this.slides[0]:this.current.getNext();return(next);},previousSlide:function(){var previous=(this.slides.indexOf(this.current)==0)?this.slides[(this.slides.length-1)]:this.current.getPrevious();return(previous);},showNext:function(options){this.show(this.nextSlide(),options);return this;},showPrevious:function(options){this.show(this.previousSlide(),options);return this;},play:function(){this.startLoop();this.fireEvent('play');return this;},pause:function(){this.stopLoop();this.fireEvent('pause');return this;},reverse:function(){var fn=(this.loopMethod==this.showNext)?this.showPrevious:this.showNext;this.setLoop(fn,this.options.delay);this.fireEvent('reverse');return this;},toElement:function(){return this.element;}});Element.Properties.slideshow={set:function(options){var slideshow=this.retrieve('slideshow');if(slideshow)slideshow.pause();return this.eliminate('slideshow').store('slideshow:options',options);},get:function(options){if(options||!this.retrieve('slideshow')){if(options||!this.retrieve('slideshow:options'))this.set('slideshow',options);this.store('slideshow',new SlideShow(this,this.retrieve('slideshow:options')));}
return this.retrieve('slideshow');}};Element.implement({playSlideShow:function(options){this.get('slideshow',options).play();return this;},pauseSlideShow:function(options){this.get('slideshow',options).pause();return this;}});SlideShow.adders={transitions:{},add:function(className,fn){this.transitions[className]=fn;this.implement({transitions:this.transitions});},addAllThese:function(transitions){$A(transitions).each(function(transition){this.add(transition[0],transition[1]);},this);}}
$extend(SlideShow,SlideShow.adders);SlideShow.implement(SlideShow.adders);SlideShow.add('fade',function(previous,next,duration,instance){previous.set('tween',{duration:duration}).fade('out');return this;});SlideShow.addAllThese([['none',function(previous,next,duration,instance){previous.setStyle('display','none');return this;}],['crossFade',function(previous,next,duration,instance){previous.set('tween',{duration:duration}).fade('out');next.set('tween',{duration:duration}).fade('in');return this;}],['fadeThroughBackground',function(previous,next,duration,instance){var half=duration/2;next.set('tween',{duration:half}).fade('hide');previous.set('tween',{duration:half,onComplete:function(){next.fade('in');}}).fade('out');}],['pushLeft',function(previous,next,duration,instance){var distance=instance.element.getSize().x;next.setStyle('left',distance);new Fx.Elements([previous,next],{duration:duration}).start({0:{left:[-distance]},1:{left:[0]}});return this;}],['pushRight',function(p,n,d,i){var distance=i.element.getSize().x;n.setStyle('left',-distance);new Fx.Elements([p,n],{duration:d}).start({0:{left:[distance]},1:{left:[0]}});return this;}],['pushUp',function(p,n,d,i){var distance=i.element.getSize().y;n.setStyle('top',distance);new Fx.Elements([p,n],{duration:d}).start({0:{top:[-distance]},1:{top:[0]}});return this;}],['pushDown',function(p,n,d,i){var distance=i.element.getSize().y;n.setStyle('top',-distance);new Fx.Elements([p,n],{duration:d}).start({0:{top:[distance]},1:{top:[0]}});return this;}],['blindRight',function(p,n,d,i){var distance=i.element.getSize().x;n.setStyles({left:-distance,'z-index':2}).set('tween',{duration:d}).tween('left',0);return this;}],['blindLeft',function(p,n,d,i){var distance=i.element.getSize().x;n.setStyles({left:distance,'z-index':2}).set('tween',{duration:d}).tween('left',0);return this;}],['blindUp',function(p,n,d,i){var distance=i.element.getSize().y;n.setStyles({top:distance,'z-index':2}).set('tween',{duration:d}).tween('top',0);return this;}],['blindDown',function(p,n,d,i){var distance=i.element.getSize().y;n.setStyles({top:-distance,'z-index':2}).set('tween',{duration:d}).tween('top',0);return this;}],['blindDownFade',function(p,n,d,i){this.blindDown(p,n,d,i).fade(p,n,d,i);}],['blindUpFade',function(p,n,d,i){this.blindUp(p,n,d,i).fade(p,n,d,i);}],['blindLeftFade',function(p,n,d,i){this.blindLeft(p,n,d,i).fade(p,n,d,i);}],['blindRightFade',function(p,n,d,i){this.blindRight(p,n,d,i).fade(p,n,d,i);}]]);