var Lightbox={init:function(options){this.options=Object.extend({resizeDuration:400,resizeTransition:Fx.Transitions.sineInOut,initialWidth:250,initialHeight:250,animateCaption:true,defaultIframeWidth:700,defaultIframeHeight:310},options||{});if(window.ie6&&document.compatMode=="BackCompat"){this.options.animateCaption=false}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').setProperty('id','lbOverlay').injectInside(document.body);this.center=new Element('div').setProperty('id','lbCenter').setStyles({width:this.options.initialWidth+'px',height:this.options.initialHeight+'px',marginLeft:'-'+(this.options.initialWidth/2)+'px',display:'none'}).injectInside(document.body);this.canvas=new Element('div').setProperty('id','lbCanvas').injectInside(this.center);this.prevLink=new Element('a').setProperties({id:'lbPrevLink',href:'#'}).setStyle('display','none').injectInside(this.canvas);this.nextLink=this.prevLink.clone().setProperty('id','lbNextLink').injectInside(this.canvas);this.prevLink.onclick=this.previous.bind(this);this.nextLink.onclick=this.next.bind(this);this.bottomContainer=new Element('div').setProperty('id','lbBottomContainer').setStyle('display','none').injectInside(document.body);this.bottom=new Element('div').setProperty('id','lbBottom').injectInside(this.bottomContainer);new Element('a').setProperties({id:'lbCloseLink',href:'#'}).injectInside(this.bottom).onclick=this.overlay.onclick=this.close.bind(this);this.caption=new Element('div').setProperty('id','lbCaption').injectInside(this.bottom);this.number=new Element('div').setProperty('id','lbNumber').injectInside(this.bottom);new Element('div').setStyle('clear','both').injectInside(this.bottom);var nextEffect=this.nextEffect.bind(this);this.fx={overlay:this.overlay.effect('opacity',{duration:500}).hide(),resizeCenter:this.center.effects({duration:this.options.resizeDuration,transition:this.options.resizeTransition,onComplete:nextEffect}),image:this.canvas.effect('opacity',{duration:500,onComplete:nextEffect}),bottom:this.bottomContainer.effect('height',{duration:400,onComplete:nextEffect})};this.preloadPrev=new Image();this.preloadNext=new Image()},click:function(link){if(link.rel.length==8)return this.show(link.href,link.title,link.rev);var j,itemNumber,items=[];this.anchors.each(function(el){if(el.rel==link.rel){for(j=0;j<items.length;j++)if(items[j][0]==el.href&&items[j][2]==el.rev)break;if(j==items.length){items.push([el.href,el.title,el.rev]);if(el.href==link.href&&el.rev==link.rev)itemNumber=j}}},this);return this.open(items,itemNumber)},show:function(url,title,rev){return this.open([[url,title,rev]],0)},open:function(items,itemNumber){this.items=items;this.position();this.setup(true);var wh=(window.getHeight()==0)?window.getScrollHeight():window.getHeight();var st=document.body.scrollTop||document.documentElement.scrollTop;this.top=st+(wh/15);this.center.setStyles({top:this.top+'px',display:''});this.fx.overlay.start(0.8);return this.changeItem(itemNumber)},position:function(){var ww=(window.getWidth()==0)?window.getScrollWidth()-22:window.getWidth();var wh=(window.getHeight()==0)?window.getScrollHeight():window.getHeight();var st=document.body.scrollTop||document.documentElement.scrollTop;this.overlay.setStyles({top:st+'px',height:wh+'px',width:ww+'px'})},setup:function(open){var elements=$A(document.getElementsByTagName('object'));if(window.ie)elements.extend(document.getElementsByTagName('select'));elements.each(function(el){el.style.visibility=open?'hidden':''});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:case 88:case 67:this.close();break;case 37:case 80:this.previous();break;case 39:case 78:this.next()}},previous:function(){return this.changeItem(this.activeItem-1)},next:function(){return this.changeItem(this.activeItem+1)},changeItem:function(itemNumber){if(this.step||(itemNumber<0)||(itemNumber>=this.items.length))return false;this.step=1;this.activeItem=itemNumber;this.bottomContainer.style.display=this.prevLink.style.display=this.nextLink.style.display='none';this.fx.image.hide();this.center.className='lbLoading';this.removeCurrentItem();var url=this.items[this.activeItem][0];var rev=this.items[this.activeItem][2];var re_imageURL=/\.(jpe?g|png|gif|bmp)/i;if(url.match(re_imageURL)){this.preload=new Image();this.preload.datatype='image';this.preload.w=this.matchOrDefault(rev,new RegExp("width=(\\d+%?)","i"),-1);this.preload.h=this.matchOrDefault(rev,new RegExp("height=(\\d+%?)","i"),-1);this.preload.onload=this.nextEffect.bind(this);this.preload.src=url}else{this.preload=new Object();this.preload.datatype='iframe';this.preload.w=this.matchOrDefault(rev,new RegExp("width=(\\d+)","i"),this.options.defaultIframeWidth);this.preload.h=this.matchOrDefault(rev,new RegExp("height=(\\d+)","i"),this.options.defaultIframeHeight);this.preload.src=url;this.nextEffect()}return false},nextEffect:function(){switch(this.step++){case 1:this.center.className='';if(this.preload.datatype=='image'){var ws=(this.preload.w==-1)?this.preload.width.toString():this.preload.w.toString();var hs=(this.preload.h==-1)?this.preload.height.toString():this.preload.h.toString();this.p_width=(q=ws.match(/(\d+)%/))?q[1]*this.preload.width*0.01:ws;this.p_height=(q=hs.match(/(\d+)%/))?q[1]*this.preload.height*0.01:hs;new Element('img').setProperties({id:'lbImage',src:this.preload.src,width:this.p_width,height:this.p_height}).injectInside(this.canvas);this.nextLink.style.right=''}else{this.p_width=this.preload.w;this.p_height=this.preload.h;this.iframeId="lbFrame_"+new Date().getTime();new Element('iframe').setProperties({id:this.iframeId,width:this.p_width,height:this.p_height,frameBorder:0,scrolling:'yes',src:this.preload.src}).injectInside(this.canvas);this.nextLink.style.right='25px'}this.canvas.style.width=this.bottom.style.width=this.p_width+'px';this.canvas.style.height=this.prevLink.style.height=this.nextLink.style.height=this.p_height+'px';this.caption.setHTML(this.items[this.activeItem][1]||'');this.number.setHTML((this.items.length==1)?'':'Page '+(this.activeItem+1)+' of '+this.items.length);if(this.activeItem)this.preloadPrev.src=this.items[this.activeItem-1][0];if(this.activeItem!=(this.items.length-1))this.preloadNext.src=this.items[this.activeItem+1][0];if(this.center.clientHeight!=this.canvas.offsetHeight){var oh=(this.p_height==this.canvas.clientHeight)?this.canvas.offsetHeight:eval(this.p_height)+18;this.fx.resizeCenter.start({height:oh});break}this.step++;case 2:if(this.center.clientWidth!=this.canvas.offsetWidth){var ow=(this.p_width==this.canvas.clientWidth)?this.canvas.offsetWidth:eval(this.p_width)+18;this.fx.resizeCenter.start({width:ow,marginLeft:-ow/2});break}this.step++;case 3:this.bottomContainer.setStyles({top:(this.top+this.center.clientHeight)+'px',height:'0px',marginLeft:this.center.style.marginLeft,width:this.center.style.width,display:''});this.fx.image.start(1);break;case 4:if(this.options.animateCaption){this.fx.bottom.start(0,this.bottom.offsetHeight+10);break}this.bottomContainer.style.height=(this.bottom.offsetHeight+10)+'px';case 5:if(this.activeItem){this.prevLink.style.display=''}if(this.activeItem!=(this.items.length-1)){this.nextLink.style.display=''}this.step=0}},close:function(){if(this.step<0)return;this.step=-1;this.removeCurrentItem();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);return false},removeCurrentItem:function(){if(this.preload){if(this.preload.datatype=='image'){$('lbImage').remove();this.preload.onload=Class.empty}else{$(this.iframeId).remove()}this.preload=null}},matchOrDefault:function(str,re,val){var hasQuery=str.match(re);return hasQuery?hasQuery[1]:val}};window.addEvent('domready',Lightbox.init.bind(Lightbox));