var Lightbox={init:function(options){this.options=$extend({resizeDuration:400,resizeTransition:false,initialWidth:250,initialHeight:250,animateCaption:true,showCounter:true},options||{});this.anchors=[];$each(document.links,function(el){if(el.rel&&el.rel.test(/^lightbox/i)){el.onclick=this.click.pass(el,this);this.anchors.push(el);}},this);this.eventKeyDown=this.keyboardListener.bindAsEventListener(this);this.eventPosition=this.position.bind(this);this.overlay=new Element('div',{'id':'lbOverlay'}).injectInside(document.body);this.center=new Element('div',{'id':'lbCenter','styles':{'width':this.options.initialWidth,'height':this.options.initialHeight,'marginLeft':-(this.options.initialWidth/2),'display':'none'}}).injectInside(document.body);this.image=new Element('div',{'id':'lbImage'}).injectInside(this.center);this.URL=new Element('div',{'id':'lbURL'}).injectInside(this.center);this.prevLink=new Element('a',{'id':'lbPrevLink','href':'#','styles':{'display':'none'}}).injectInside(this.image);this.nextLink=this.prevLink.clone().setProperty('id','lbNextLink').injectInside(this.image);this.prevLink.onclick=this.previous.bind(this);this.nextLink.onclick=this.next.bind(this);this.bottomContainer=new Element('div',{'id':'lbBottomContainer','styles':{'display':'none'}}).injectInside(document.body);this.bottom=new Element('div',{'id':'lbBottom'}).injectInside(this.bottomContainer);new Element('a',{'id':'lbCloseLink','href':'javascript:void(0)'}).injectInside(this.bottom).onclick=this.overlay.onclick=this.close.bind(this);this.caption=new Element('div',{'id':'lbCaption'}).injectInside(this.bottom);this.number=new Element('div',{'id':'lbNumber'}).injectInside(this.bottom);new Element('div',{'styles':{'clear':'both'}}).injectInside(this.bottom);var nextEffect=this.nextEffect.bind(this);var nextEffectURL=this.nextEffectURL.bind(this);this.fx={overlay:this.overlay.effect('opacity',{duration:500}).hide(),resize:this.center.effects($extend({duration:this.options.resizeDuration,onComplete:nextEffect},this.options.resizeTransition?{transition:this.options.resizeTransition}:{})),resizeURL:this.center.effects($extend({duration:this.options.resizeDuration,onComplete:nextEffectURL},this.options.resizeTransition?{transition:this.options.resizeTransition}:{})),image:this.image.effect('opacity',{duration:500,onComplete:nextEffect}),bottom:this.bottom.effect('margin-top',{duration:400,onComplete:nextEffect})};this.preloadPrev=new Image();this.preloadNext=new Image();},refresh:function(){this.anchors=[];$each(document.links,function(el){if(el.rel&&el.rel.test(/^lightbox/i)){el.onclick=this.click.pass(el,this);this.anchors.push(el);}},this);},reloadAjaxContent:function(){this.URL.innerHTML='';this.center.setStyles({width:this.options.initialWidth,height:this.options.initialHeight,marginLeft:-(this.options.initialWidth/2)});this.openURL(this.URLs,0);},click:function(link){this.overlay.style.display='block';if(link.href.indexOf('.php')!=-1){return this.showURL(link.href,link.title);}
if(link.rel.length==8)return this.show(link.href,link.title);var j,imageNum,images=[];this.anchors.each(function(el){if(el.rel==link.rel){for(j=0;j<images.length;j++)if(images[j][0]==el.href)break;if(j==images.length){images.push([el.href,el.title]);if(el.href==link.href)imageNum=j;}}},this);return this.open(images,imageNum);},show:function(url,title){this.loadType='image';this.image.style.zIndex='2';this.URL.innerHTML='';this.URL.style.zIndex='1';return this.open([[url,title]],0);},showURL:function(url,title){this.loadType='URL';this.URL.innerHTML='';this.URL.style.zIndex='2';this.image.style.zIndex='1';return this.openURL([[url,title]],0);},open:function(images,imageNum){this.images=images;this.position();this.setup(true);this.top=window.getScrollTop()+(window.getHeight()/15);this.center.setStyles({top:this.top,display:''});this.fx.overlay.start(0.8);return this.changeImage(imageNum);},openURL:function(URLs,URLNum){this.prevLink.style.display='none';this.nextLink.style.display='none';this.URLs=URLs;this.position();this.setup(true);this.top=window.getScrollTop()+(window.getHeight()/15);this.center.setStyles({top:this.top,display:''});this.fx.overlay.start(0.8);return this.changeURL(URLNum);},position:function(){this.overlay.setStyles({'top':(window.getScrollTop()-300),'height':(window.getHeight()+500)});},setup:function(open){var Elements=$A(document.getElementsByTagName('object'));Elements.extend(document.getElementsByTagName(window.ie?'select':'embed'));Elements.each(function(el){if(open)el.lbBackupStyle=el.style.visibility;try{el.style.visibility=open?'hidden':el.lbBackupStyle;}catch(ex){;}});var fn=open?'addEvent':'removeEvent';window[fn]('scroll',this.eventPosition)[fn]('resize',this.eventPosition);document[fn]('keydown',this.eventKeyDown);this.step=0;},keyboardListener:function(event){switch(event.keyCode){case 27:this.close();break;case 37:case 80:if(this.loadType=='image'){this.previous();}break;case 39:case 78:if(this.loadType=='image'){this.next();}}},previous:function(){return this.changeImage(this.activeImage-1);},next:function(){return this.changeImage(this.activeImage+1);},changeImage:function(imageNum){if(this.step||(imageNum<0)||(imageNum>=this.images.length))return false;this.step=1;this.activeImage=imageNum;this.bottomContainer.style.display=this.prevLink.style.display=this.nextLink.style.display='none';this.fx.image.hide();this.center.className='lbLoading';this.preload=new Image();this.preload.onload=this.nextEffect.bind(this);this.preload.src=this.images[imageNum][0];return false;},changeURL:function(URLNum){if(this.step||(URLNum<0)||(URLNum>=this.URLs.length))return false;this.step=1;this.activeImage=URLNum;this.bottomContainer.style.display=this.prevLink.style.display=this.nextLink.style.display='none';this.fx.image.hide();this.center.className='lbLoading';var obj=this;new Ajax(this.URLs[URLNum][0],{method:'get',update:this.URL,onComplete:function(){obj.refresh();obj.nextEffectURL();}}).request();return false;},nextEffectURL:function(){switch(this.step++)
{case 1:this.center.className='';URLSize=this.URL.getSize();this.caption.setHTML('<br />&nbsp;&nbsp;<a href="javascript:Lightbox.reloadAjaxContent()" style="font-weight:bold">Please click here if you see garbled text </a>');if(this.center.clientWidth!=URLSize['scrollSize']['x']){this.fx.resizeURL.start({width:URLSize['scrollSize']['x'],height:(URLSize['scrollSize']['y']),marginLeft:-URLSize['scrollSize']['x']/2});break;}
this.step++;case 2:if(this.center.clientHeight!=URLSize['scrollSize']['y']){this.fx.resizeURL.start({height:(URLSize['scrollSize']['y'])});break;}
this.step++;case 3:this.bottomContainer.setStyles({top:this.top+URLSize['scrollSize']['y'],width:URLSize['scrollSize']['x'],height:50,marginLeft:-(URLSize['scrollSize']['x']/2),display:''});this.bottom.style.width=(URLSize['scrollSize']['x']-20)+'px';this.step=0;break;}},nextEffect:function(){switch(this.step++){case 1:this.center.className='';this.image.style.backgroundImage='url('+this.images[this.activeImage][0]+')';this.image.style.width=this.bottom.style.width=this.preload.width+'px';this.image.style.height=this.prevLink.style.height=this.nextLink.style.height=this.preload.height+'px';this.caption.setHTML(this.images[this.activeImage][1]||'');this.number.setHTML((!this.options.showCounter||(this.images.length==1))?'':'Image '+(this.activeImage+1)+' of '+this.images.length);if(this.activeImage)this.preloadPrev.src=this.images[this.activeImage-1][0];if(this.activeImage!=(this.images.length-1))this.preloadNext.src=this.images[this.activeImage+1][0];if(this.center.clientHeight!=this.image.offsetHeight){this.fx.resize.start({height:this.image.offsetHeight});break;}
this.step++;case 2:if(this.center.clientWidth!=this.image.offsetWidth){this.fx.resize.start({width:this.image.offsetWidth,marginLeft:-this.image.offsetWidth/2});break;}
this.step++;case 3:this.bottomContainer.setStyles({top:this.top+this.center.clientHeight,width:this.center.clientWidth,height:0,marginLeft:this.center.style.marginLeft,display:''});this.fx.image.start(1);break;case 4:if(this.options.animateCaption){this.fx.bottom.set(-this.bottom.offsetHeight);this.bottomContainer.style.height='';this.fx.bottom.start(0);break;}
this.bottomContainer.style.height='';case 5:if(this.activeImage)this.prevLink.style.display='';if(this.activeImage!=(this.images.length-1))this.nextLink.style.display='';this.step=0;}},close:function(){if(this.step<0)return;this.step=-1;if(this.preload){this.preload.onload=Class.empty;this.preload=null;}
for(var f in this.fx)this.fx[f].stop();this.center.style.display=this.bottomContainer.style.display='none';this.fx.overlay.chain(this.setup.pass(false,this)).start(0);this.overlay.setStyles({top:0,height:0});this.overlay.style.display='none';return false;}}