var Lightbox={activeImage:null,badObjects:['select','object','embed'],container:null,enableSlideshow:null,groupName:null,imageArray:[],options:null,overlayDuration:null,overlayOpacity:null,playSlides:null,refTags:['a','area'],relAttribute:null,resizeDuration:null,slideShowTimer:null,startImage:null,initialize:function(options){if(!document.getElementsByTagName){return;}
this.options=$H({animate:true,autoPlay:true,borderSize:39,containerID:document,enableSlideshow:true,googleAnalytics:false,imageDataLocation:'south',initImage:'',loop:true,overlayDuration:.2,overlayOpacity:.8,prefix:'',relAttribute:'lightbox',resizeSpeed:7,showGroupName:false,slideTime:4,strings:{closeLink:'',loadingMsg:'loading',nextLink:'',prevLink:'',startSlideshow:'',stopSlideshow:'',numDisplayPrefix:'',numDisplaySeparator:'/'},featBrowser:true,breathingSize:50}).merge(options);if(this.options.animate){this.overlayDuration=Math.max(this.options.overlayDuration,0);this.options.resizeSpeed=Math.max(Math.min(this.options.resizeSpeed,10),1);this.resizeDuration=(11- this.options.resizeSpeed)*0.15;}else{this.overlayDuration=0;this.resizeDuration=0;}
this.enableSlideshow=this.options.enableSlideshow;this.overlayOpacity=Math.max(Math.min(this.options.overlayOpacity,1),0);this.playSlides=this.options.autoPlay;this.container=$(this.options.containerID);this.relAttribute=this.options.relAttribute;this.updateImageList();var objBody=this.container!=document?this.container:document.getElementsByTagName('body').item(0);var objOverlay=document.createElement('div');objOverlay.setAttribute('id',this.getID('overlay'));objOverlay.style.display='none';objBody.appendChild(objOverlay);Event.observe(objOverlay,'click',this.end.bindAsEventListener(this));var objLightbox=document.createElement('div');objLightbox.setAttribute('id',this.getID('lightbox'));objLightbox.style.display='none';objBody.appendChild(objLightbox);var objImageDataContainer=document.createElement('div');objImageDataContainer.setAttribute('id',this.getID('imageDataContainer'));objImageDataContainer.className=this.getID('clearfix');var objImageData=document.createElement('div');objImageData.setAttribute('id',this.getID('imageData'));objImageDataContainer.appendChild(objImageData);var objImageDetails=document.createElement('div');objImageDetails.setAttribute('id',this.getID('imageDetails'));objImageData.appendChild(objImageDetails);var objCaption=document.createElement('span');objCaption.setAttribute('id',this.getID('caption'));objImageDetails.appendChild(objCaption);var objNumberDisplay=document.createElement('span');objNumberDisplay.setAttribute('id',this.getID('numberDisplay'));objImageDetails.appendChild(objNumberDisplay);var objDetailsNav=document.createElement('span');objDetailsNav.setAttribute('id',this.getID('detailsNav'));objImageDetails.appendChild(objDetailsNav);var objPrevLink=document.createElement('a');objPrevLink.setAttribute('id',this.getID('prevLinkDetails'));objPrevLink.setAttribute('href','javascript:void(0);');objPrevLink.innerHTML=this.options.strings.prevLink;objDetailsNav.appendChild(objPrevLink);Event.observe(objPrevLink,'click',this.showPrev.bindAsEventListener(this));var objSlideShowControl=document.createElement('a');objSlideShowControl.setAttribute('id',this.getID('slideShowControl'));objSlideShowControl.setAttribute('href','javascript:void(0);');objDetailsNav.appendChild(objSlideShowControl);Event.observe(objSlideShowControl,'click',this.toggleSlideShow.bindAsEventListener(this));var objNextLink=document.createElement('a');objNextLink.setAttribute('id',this.getID('nextLinkDetails'));objNextLink.setAttribute('href','javascript:void(0);');objNextLink.innerHTML=this.options.strings.nextLink;objDetailsNav.appendChild(objNextLink);Event.observe(objNextLink,'click',this.showNext.bindAsEventListener(this));var objClose=document.createElement('div');objClose.setAttribute('id',this.getID('close'));objImageData.appendChild(objClose);var objCloseLink=document.createElement('a');objCloseLink.setAttribute('id',this.getID('closeLink'));objCloseLink.setAttribute('href','javascript:void(0);');objCloseLink.innerHTML=this.options.strings.closeLink;objClose.appendChild(objCloseLink);Event.observe(objCloseLink,'click',this.end.bindAsEventListener(this));var objOuterImageContainer=document.createElement('table');objOuterImageContainer.setAttribute('id',this.getID('outerImageContainer'));objOuterImageContainer.cellSpacing=0;objLightbox.appendChild(objOuterImageContainer);var objOICTop=objOuterImageContainer.insertRow(-1);var objOICTL=objOICTop.insertCell(-1);objOICTL.className='tl';var objOICTC=objOICTop.insertCell(-1);objOICTC.className='tc';var objOICTR=objOICTop.insertCell(-1);objOICTR.className='tr';var objOICMiddle=objOuterImageContainer.insertRow(-1);var objOICML=objOICMiddle.insertCell(-1);objOICML.className='ml';var objLightboxFrameBody=objOICMiddle.insertCell(-1);objLightboxFrameBody.setAttribute('id',this.getID('lightboxFrameBody'));objLightboxFrameBody.innerHTML=' ';var objOICMR=objOICMiddle.insertCell(-1);objOICMR.className='mr';var objOICBottom=objOuterImageContainer.insertRow(-1);var objOICBL=objOICBottom.insertCell(-1);objOICBL.className='bl';var objOICBC=objOICBottom.insertCell(-1);objOICBC.className='bc';var objOICBR=objOICBottom.insertCell(-1);objOICBR.className='br';if(this.options.imageDataLocation=='north'){objLightboxFrameBody.appendChild(objImageDataContainer);}
var objImageContainer=document.createElement('div');objImageContainer.setAttribute('id',this.getID('imageContainer'));objLightboxFrameBody.appendChild(objImageContainer);var objLightboxImage=document.createElement('img');objLightboxImage.setAttribute('id',this.getID('lightboxImage'));objImageContainer.appendChild(objLightboxImage);var objHoverNav=document.createElement('div');objHoverNav.setAttribute('id',this.getID('hoverNav'));objImageContainer.appendChild(objHoverNav);var objPrevLinkImg=document.createElement('a');objPrevLinkImg.setAttribute('id',this.getID('prevLinkImg'));objPrevLinkImg.setAttribute('href','javascript:void(0);');objHoverNav.appendChild(objPrevLinkImg);Event.observe(objPrevLinkImg,'click',this.showPrev.bindAsEventListener(this));var objNextLinkImg=document.createElement('a');objNextLinkImg.setAttribute('id',this.getID('nextLinkImg'));objNextLinkImg.setAttribute('href','javascript:void(0);');objHoverNav.appendChild(objNextLinkImg);Event.observe(objNextLinkImg,'click',this.showNext.bindAsEventListener(this));var objLoading=document.createElement('div');objLoading.setAttribute('id',this.getID('loading'));objImageContainer.appendChild(objLoading);var objLoadingLink=document.createElement('a');objLoadingLink.setAttribute('id',this.getID('loadingLink'));objLoadingLink.setAttribute('href','javascript:void(0);');objLoadingLink.innerHTML=this.options.strings.loadingMsg;objLoading.appendChild(objLoadingLink);Event.observe(objLoadingLink,'click',this.end.bindAsEventListener(this));if(this.options.imageDataLocation!='north'){objLightboxFrameBody.appendChild(objImageDataContainer);}
if(this.options.initImage!=''){this.start($(this.options.initImage));}},updateImageList:function(){var el,els,rel;for(var i=0;i<this.refTags.length;i++){els=this.container.getElementsByTagName(this.refTags[i]);for(var j=0;j<els.length;j++){el=els[j];rel=String(el.getAttribute('rel'));if(el.getAttribute('href')&&(rel.toLowerCase().match(this.relAttribute))){el.onclick=function(){Lightbox.start(this);return false;}}}}},start:function(imageLink){this.hideBadObjects();var pageSize=this.getPageSize();$(this.getID('overlay')).setStyle({height:pageSize.pageHeight+'px'});new Effect.Appear(this.getID('overlay'),{duration:this.overlayDuration,from:0,to:this.overlayOpacity});this.imageArray=[];this.groupName=null;var rel=imageLink.getAttribute('rel');var imageTitle='';if(rel==this.relAttribute){imageTitle=imageLink.getAttribute('title')?imageLink.getAttribute('title'):'';this.imageArray.push({'link':imageLink.getAttribute('href'),'title':imageTitle});this.startImage=0;}else{var els=this.container.getElementsByTagName(imageLink.tagName);for(var i=0;i<els.length;i++){var el=els[i];if(el.getAttribute('href')&&(el.getAttribute('rel')==rel)){imageTitle=el.getAttribute('title')?el.getAttribute('title'):'';this.imageArray.push({'link':el.getAttribute('href'),'title':imageTitle});if(el==imageLink){this.startImage=this.imageArray.length-1;}}}
this.groupName=rel.substring(this.relAttribute.length+1,rel.length-1);}
var pageScroll=this.getPageScroll();var lightboxTop=pageScroll.y+(pageSize.winHeight/15);$(this.getID('lightbox')).setStyle({top:lightboxTop+'px'}).show();if(Lightbox.options.featBrowser)
Event.observe(window,'resize',(function(e){this.adjustImageSize(true);}).bind(this));this.changeImage(this.startImage);},changeImage:function(imageNum){this.activeImage=imageNum;this.disableKeyboardNav();this.pauseSlideShow();$(this.getID('loading')).show();$(this.getID('lightboxImage')).hide();$(this.getID('hoverNav')).hide();$(this.getID('imageDataContainer')).hide();$(this.getID('numberDisplay')).hide();$(this.getID('detailsNav')).hide();var imgPreloader=new Image();imgPreloader.onload=function(){$(Lightbox.getID('lightboxImage')).src=imgPreloader.src;Lightbox.imageArray[Lightbox.activeImage].width=imgPreloader.width;Lightbox.imageArray[Lightbox.activeImage].height=imgPreloader.height;Lightbox.adjustImageSize(false);}
imgPreloader.src=this.imageArray[this.activeImage].link;if(this.options.googleAnalytics){urchinTracker(this.imageArray[this.activeImage].link);}},adjustImageSize:function(recall){imgWidth=this.imageArray[this.activeImage].width;imgHeight=this.imageArray[this.activeImage].height;var arrayPageSize=this.getPageSize();if(Lightbox.options.featBrowser==true){var imageProportion=imgWidth/imgHeight;var winProportion=arrayPageSize.winWidth/arrayPageSize.winHeight;if(imageProportion>winProportion){var maxWidth=arrayPageSize.winWidth-(Lightbox.options.borderSize*2)-(Lightbox.options.breathingSize*2);var maxHeight=Math.round(maxWidth/imageProportion);}else{var maxHeight=arrayPageSize.winHeight-(Lightbox.options.borderSize*2)-(arrayPageSize.winHeight/15)- Lightbox.options.breathingSize;var maxWidth=Math.round(maxHeight*imageProportion);}
if(imgWidth>maxWidth||imgHeight>maxHeight){imgWidth=maxWidth;imgHeight=maxHeight;}}
$(this.getID('overlay')).setStyle({height:arrayPageSize.pageHeight+'px'});$(this.getID('lightboxImage')).setStyle({height:imgHeight+'px',width:imgWidth+'px'});if(recall==true){$(this.getID('outerImageContainer')).setStyle({height:(imgHeight+(Lightbox.options.borderSize*2))+'px',width:(imgWidth+(Lightbox.options.borderSize*2))+'px'});}else{this.resizeImageContainer(imgWidth,imgHeight);}},resizeImageContainer:function(imgWidth,imgHeight){var cDims=$(this.getID('outerImageContainer')).getDimensions();var xScale=((imgWidth+(this.options.borderSize*2))/cDims.width)*100;var yScale=((imgHeight+(this.options.borderSize*2))/cDims.height)*100;var wDiff=(cDims.width- this.options.borderSize*2)- imgWidth;var hDiff=(cDims.height- this.options.borderSize*2)- imgHeight;var effectScale=[];if(!(hDiff==0))effectScale[effectScale.length]=new Effect.Scale(this.getID('outerImageContainer'),yScale,{scaleX:false,sync:true});if(!(wDiff==0))effectScale[effectScale.length]=new Effect.Scale(this.getID('outerImageContainer'),xScale,{scaleY:false,sync:true});if(effectScale.length)new Effect.Parallel(effectScale,{delay:this.resizeDuration,duration:this.resizeDuration});if((hDiff==0)&&(wDiff==0)){if(navigator.appVersion.indexOf('MSIE')!=-1){this.pause(250);}else{this.pause(100);}}
$(this.getID('prevLinkImg')).setStyle({height:imgHeight+'px'});$(this.getID('nextLinkImg')).setStyle({height:imgHeight+'px'});$(this.getID('imageDataContainer')).setStyle({width:(imgWidth)+'px'});this.showImage();},showImage:function(){$(this.getID('loading')).hide();new Effect.Appear(this.getID('lightboxImage'),{duration:0.5,queue:'end',afterFinish:function(){Lightbox.updateDetails();}});this.preloadNeighborImages();},updateDetails:function(){$(this.getID('caption')).show();$(this.getID('caption')).update(this.imageArray[this.activeImage].title);if(this.imageArray.length>1){var num_display=this.options.strings.numDisplayPrefix+' '+ eval(this.activeImage+ 1)+' '+ this.options.strings.numDisplaySeparator+' '+ this.imageArray.length;if(this.options.showGroupName&&this.groupName!=''){num_display+=' '+this.options.strings.numDisplaySeparator+' '+this.groupName;}
$(this.getID('numberDisplay')).update(num_display).show();if(!this.enableSlideshow){$(this.getID('slideShowControl')).hide();}
$(this.getID('detailsNav')).show();}
new Effect.Parallel([new Effect.SlideDown(this.getID('imageDataContainer'),{sync:true}),new Effect.Appear(this.getID('imageDataContainer'),{sync:true})],{duration:.65,afterFinish:function(){Lightbox.updateNav();}});},updateNav:function(){$(this.getID('imageDataContainer')).setStyle({width:'100%'});if(this.imageArray.length>1){$(this.getID('hoverNav')).show();if(this.enableSlideshow){if(this.playSlides){this.startSlideShow();}else{this.stopSlideShow();}}}
this.enableKeyboardNav();},startSlideShow:function(){this.playSlides=true;this.slideShowTimer=new PeriodicalExecuter(function(pe){Lightbox.showNext();pe.stop();},this.options.slideTime);$(this.getID('slideShowControl')).update(this.options.strings.stopSlideshow);$(this.getID('slideShowControl')).addClassName('started');},stopSlideShow:function(){this.playSlides=false;if(this.slideShowTimer){this.slideShowTimer.stop();}
$(this.getID('slideShowControl')).update(this.options.strings.startSlideshow);$(this.getID('slideShowControl')).removeClassName('started');},toggleSlideShow:function(){if(this.playSlides){this.stopSlideShow();}else{this.startSlideShow();}},pauseSlideShow:function(){if(this.slideShowTimer){this.slideShowTimer.stop();}},showNext:function(){if(this.imageArray.length>1){if(!this.options.loop&&((this.activeImage==this.imageArray.length- 1&&this.startImage==0)||(this.activeImage+1==this.startImage))){return this.end();}
if(this.activeImage==this.imageArray.length- 1){this.changeImage(0);}else{this.changeImage(this.activeImage+1);}}},showPrev:function(){if(this.imageArray.length>1){if(this.activeImage==0){this.changeImage(this.imageArray.length- 1);}else{this.changeImage(this.activeImage-1);}}},showFirst:function(){if(this.imageArray.length>1){this.changeImage(0);}},showLast:function(){if(this.imageArray.length>1){this.changeImage(this.imageArray.length- 1);}},enableKeyboardNav:function(){document.onkeydown=this.keyboardAction;},disableKeyboardNav:function(){document.onkeydown='';},keyboardAction:function(e){if(e==null){keycode=event.keyCode;}else{keycode=e.which;}
key=String.fromCharCode(keycode).toLowerCase();if(key=='x'||key=='o'||key=='c'){Lightbox.end();}else if(key=='p'||key=='%'){Lightbox.showPrev();}else if(key=='n'||key=='\''){Lightbox.showNext();}else if(key=='f'){Lightbox.showFirst();}else if(key=='l'){Lightbox.showLast();}else if(key=='s'){if(Lightbox.imageArray.length>0&&Lightbox.options.enableSlideshow){Lightbox.toggleSlideShow();}}},preloadNeighborImages:function(){var nextImageID=this.imageArray.length- 1==this.activeImage?0:this.activeImage+ 1;nextImage=new Image();nextImage.src=this.imageArray[nextImageID].link
var prevImageID=this.activeImage==0?this.imageArray.length- 1:this.activeImage- 1;prevImage=new Image();prevImage.src=this.imageArray[prevImageID].link;},end:function(){this.disableKeyboardNav();this.pauseSlideShow();$(this.getID('lightbox')).hide();new Effect.Fade(this.getID('overlay'),{duration:this.overlayDuration});this.showBadObjects();},showBadObjects:function(){var els;var tags=Lightbox.badObjects;for(var i=0;i<tags.length;i++){els=document.getElementsByTagName(tags[i]);for(var j=0;j<els.length;j++){$(els[j]).setStyle({visibility:'visible'});}}},hideBadObjects:function(){var els;var tags=Lightbox.badObjects;for(var i=0;i<tags.length;i++){els=document.getElementsByTagName(tags[i]);for(var j=0;j<els.length;j++){$(els[j]).setStyle({visibility:'hidden'});}}},pause:function(numberMillis){var now=new Date();var exitTime=now.getTime()+ numberMillis;while(true){now=new Date();if(now.getTime()>exitTime)
return;}},getPageScroll:function(){var x,y;if(self.pageYOffset){x=self.pageXOffset;y=self.pageYOffset;}else if(document.documentElement&&document.documentElement.scrollTop){x=document.documentElement.scrollLeft;y=document.documentElement.scrollTop;}else if(document.body){x=document.body.scrollLeft;y=document.body.scrollTop;}
return{x:x,y:y};},getPageSize:function(){var scrollX,scrollY,windowX,windowY,pageX,pageY;if(window.innerHeight&&window.scrollMaxY){scrollX=document.body.scrollWidth;scrollY=window.innerHeight+ window.scrollMaxY;}else if(document.body.scrollHeight>document.body.offsetHeight){scrollX=document.body.scrollWidth;scrollY=document.body.scrollHeight;}else{scrollX=document.body.offsetWidth;scrollY=document.body.offsetHeight;}
if(self.innerHeight){windowX=self.innerWidth;windowY=self.innerHeight;}else if(document.documentElement&&document.documentElement.clientHeight){windowX=document.documentElement.clientWidth;windowY=document.documentElement.clientHeight;}else if(document.body){windowX=document.body.clientWidth;windowY=document.body.clientHeight;}
pageY=(scrollY<windowY)?windowY:scrollY;pageX=(scrollX<windowX)?windowX:scrollX;return{pageWidth:pageX,pageHeight:pageY,winWidth:windowX,winHeight:windowY};},getID:function(id){return this.options.prefix+id;}}
Event.observe(window,'load',function(){Lightbox.initialize(window['LightBoxOpt']);});