var agent=navigator.userAgent.toLowerCase();
var IE=(agent.indexOf("msie")!=-1&&agent.indexOf("opera")==-1);
var IE7=(agent.indexOf("msie 7")!=-1);
var OPERA=(agent.indexOf("opera")!=-1);
var STRICT_MODE=(document.compatMode=="CSS1Compat");
var _DOMAIN=undefined;var GALLERY_W=675;
var log=getLogger();

if(document.location.href.indexOf("#jslog")!=-1) log.enable();
	function Logger(){
		this.enable=loggerEnable;
		this.clear=loggerClear;
		this.log=loggerLog;
		this.debug=loggerDebug;
		this.info=loggerInfo;
		this.error=loggerError;
		var console=undefined;
		try{
			console=document.createElement("textarea");
			console.style.display="none";
			console.style.position="absolute";
			console.style.right="2px";
			console.style.bottom="2px";
			console.style.width="23em";
			console.style.height="40em";
			console.style.fontFamily="monospace";
			console.style.fontSize="9px";
			console.style.color="#000000";
			setOpacity(console,0.7);
			console.border="1px solid #808080";
			console.ondblclick=clearLogger;
			}
		catch(e){}
		this.console=console;
		this.enabled=false;
		this.logTimeStart=getTimeMillis();
	}

	function getLogger(){
		var log=undefined;
		var win=window;
		while(log==undefined){
			try{
				log=win.document.log;
				}
			catch(e){break;}
		
		if(win==win.parent)break;
			win=win.parent;
		}
		if(log==undefined){
			log=new Logger();
			document.log=log;
		}
		return log;
	}
	
	function clearLogger(){
		getLogger().clear();
	}
	
	function loggerEnable(){
		if(this.enabled||this.console==undefined)
		return;
		if(window.document.body!=undefined){
			window.document.body.appendChild(this.console);
			this.console.style.display="";
			this.enabled=true;
		}
	}
	
	function loggerDebug(msg){
		this.log("DEBUG",msg);
	}
	
	function loggerInfo(msg){
		this.log("INFO",msg);
	}
	
	function loggerError(msg,e){
		this.log("ERROR",msg,e);
	}
	
	function loggerLog(level,msg,e){
		if(!this.enabled||this.console==undefined)
		return;
		var millis=(getTimeMillis()-this.logTimeStart)+"";
		while(millis.length<6) millis+=" ";
		var m=millis+" ";
		if(msg!=undefined) m+=msg+" ";
		if(e!=undefined) m+=e.name+": "+e.message;
		this.console.value+=m+"\n";
	}
	
	function loggerClear(){
		if(!this.enabled||this.console==undefined)
		return;
		this.console.value="";
	}
	
	function getTimeMillis(){
		var t=new Date();
		return Date.UTC(t.getFullYear(),t.getMonth(),t.getDay(),t.getHours(),t.getMinutes(),t.getSeconds(),t.getMilliseconds());
	}
	
	function getEvent(event){
		return(event!=undefined?event:window.event);
	}
	
	function preventDefault(event){
		if(event.preventDefault){
			event.preventDefault();
			event.stopPropagation();
		}
		else{
			event.returnValue=false;
			event.cancelBubble=true;
		}
	}
	
	function getEventTarget(event){
		if(event==undefined)
		return undefined;
		if(event.srcElement!=undefined)
		return event.srcElement;
		else
		return event.target;
	}

	function getResponse(url,async,getXML,callback,data){
		var req=undefined;
		try{
			req=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch(e1){
			try{
				req=new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch(e2){
				req=new XMLHttpRequest();
			}
		}
		if(req==undefined){
			log.error("Failed to initialize XML/HTTP");
			return undefined;
		}
		req.open("GET",url,async);
		if(!async){
			req.send(undefined);
			if(req.readyState!=4){
				log.error("Request failed: "+req.readyState);
				return undefined;
			}
		if(!getXML)
			return req.responseText;
		else
			return req.responseXML;
		}
		else{
			req.onreadystatechange=function(){
				callback(req,data);
			};
			req.send(undefined);
			return undefined;
		}
	}
	
	function getElementsByTagName(node,tag){
		if(node==undefined)
		return undefined;
		if(tag.indexOf(":")!=-1&&!IE){
			tag=tag.split(":")[1];
			return node.getElementsByTagName(tag);
		}
		else{
			return node.getElementsByTagName(tag);
		}
	}
	
	function getFirstElementsValue(node,tag){
		if(node==undefined)
		return undefined;
		var nodes=getElementsByTagName(node,tag);
		if(nodes.length===0)
		return undefined;
		else
		return getElementValue(nodes[0]);
	}
	
	function getElementValue(node){
		var i;
		var val="";
		for(i=0;i<node.childNodes.length;i++)val+=node.childNodes[i].nodeValue;
		return val;
	}
	
	function trim(str){
		if(str==undefined)
		return undefined;
		return str.replace(/^\s*([\s\S]*\S+)\s*$|^\s*$/,'$1');
	}
	
	function getRootWindow(){
		var win=window;
		while(win!=undefined){
			try{
				if(win===win.parent){
					break;
				}
				else if(win.parent!=undefined&&win.parent.document.location.href.indexOf("/selenium-server/")!=-1){
					break;
				}
				win=win.parent;
			}
			catch(e){
				break;
			}
		}
		return win;
	}
	
	function getURLParams(){
		var i,params=[];
		var url=window.location.search;
		if(url==undefined||url.length===0)
		return undefined;
		url=url.substring(1);
		var namevals=url.replace(/\+/g," ").split("&");
		for(i=0;i<namevals.length;i++){
			var name,val;
			var pos=namevals[i].indexOf("=");
			if(pos!=-1){
				name=namevals[i].substring(0,pos);
				val=unescape(namevals[i].substring(pos+1));
			}
			else{
				name=namevals[i];
				val=undefined;
			}
			params[name]=val;
		}
		return params;
	}
	
	function setCookie(name,value,expire){
		var expiry=(expire==undefined)?"":("; expires="+expire.toGMTString());
		document.cookie=name+"="+value+expiry;
	}
	
	function getCookie(name){
		if(document.cookie==undefined||document.cookie.length===0)
		return undefined;
		var search=name+"=";
		var index=document.cookie.indexOf(search);
		if(index!=-1){
			index+=search.length;
			var end=document.cookie.indexOf(";",index);
			if(end==-1)end=document.cookie.length;
			return unescape(document.cookie.substring(index,end));
		}
	}
	
	function removeCookie(name){
		var today=new Date();
		var expires=new Date();
		expires.setTime(today.getTime()-1);
		setCookie(name,"",expires);
	}
	
	function getMessage(id){
		if(MESSAGES[id]==undefined){
			return"("+id+")";
		}
		else{
			return MESSAGES[id];
		}
	}
	function localizeNodeAttribs(node){
		var i;
		if(node==undefined)
		return;
		if(node.alt!=undefined&&node.alt.indexOf("#")===0){
			node.alt=getMessage(node.alt.substring(1));
		}
		if(node.title!=undefined&&node.title.indexOf("#")===0){
			node.title=getMessage(node.title.substring(1));
		}
		if(node.childNodes!=undefined){
			for(i=0;i<node.childNodes.length;i++){
				localizeNodeAttribs(node.childNodes[i]);
			}
		}
	}
	
	function padNumber(n,pad){
		n=n+"";
		while(n.length<pad){
			n="0"+n;
		}
		return n;
	}
	
	function formatDate(date,longFormat){
		if(date==undefined)
		return undefined;
		return padNumber(date.getMonth()+1,2)+"/"+padNumber(date.getDate(),2)+(longFormat?"/"+date.getFullYear():"")+" "+padNumber(date.getHours(),2)+":"+padNumber(date.getMinutes(),2);
	}
	
	function parseISOTime(strTime){
		if(strTime==undefined)
		return undefined;
		var isoRE=/^(\d{4})-(\d\d)-(\d\d)T(\d\d):(\d\d):(\d\d)(\.\d{3})?([Z+-])?(\d\d)?:?(\d\d)?$/;
		if(!isoRE.test(strTime)){
			return undefined;
		}
		else{
			return new Date(RegExp.$1,RegExp.$2-1,RegExp.$3,RegExp.$4,RegExp.$5,RegExp.$6);
		}
	}
	
	function setOpacity(elt,opacity){
		if(IE){
			elt.style.filter="alpha(opacity="+parseInt(opacity*100)+")";
		}
		
		elt.style.KhtmlOpacity=opacity;
		elt.style.opacity=opacity;
	}

	function getWindowSize(win){
		var availW=win.innerWidth;
		if(availW==undefined||availW===0||isNaN(availW))availW=win.document.documentElement.clientWidth;
		if(availW==undefined||availW===0||isNaN(availW))availW=win.document.body.clientWidth;
		var availH=win.innerHeight;
		if(availH==undefined||availH===0||isNaN(availH))availH=win.document.documentElement.clientHeight;
		if(availH==undefined||availH===0||isNaN(availH))availH=win.document.body.clientHeight;
		return{
			w:availW,h:availH
		};
	}
	
	function getDocumentSize(win){
		var winSize=getWindowSize(win);
		var scrollPos=getScrollPos(win);
		var w=winSize.w+scrollPos.left;
		var h=winSize.h+scrollPos.top;
		w=Math.max(w,win.document.body.offsetWidth);
		h=Math.max(h,win.document.body.offsetHeight);
		w=Math.max(w,win.document.body.scrollWidth);
		h=Math.max(h,win.document.body.scrollHeight);
		return{
			w:w,h:h
		};
	}
	
	function getScrollPos(win){
		var scrollTop=win.pageYOffset;
		if(scrollTop==undefined||scrollTop===0)scrollTop=win.document.documentElement.scrollTop;
		if(scrollTop==undefined||scrollTop===0)scrollTop=win.document.body.scrollTop;
		var scrollLeft=win.pageXOffset;
		if(scrollLeft==undefined||scrollLeft===0)scrollLeft=win.document.documentElement.scrollLeft;
		if(scrollLeft==undefined||scrollLeft===0)scrollLeft=win.document.body.scrollLeft;
		return{
			top:scrollTop,left:scrollLeft
		};
	}
	
	var CLEAR_EVENTS=["onclick","ondblclick","onkeydown","onkeypress","onmousedown","onmouseup","onmousemove","onmouseover","onmouseout","onmousewheeldown","oncontextmenu"];
	
	function clearEvents(){
		var i,j;
		var count=0;
		if(document.all==undefined)
		return;
		for(i=0;
		i<document.all.length;
		i++){
			for(j=0;j<CLEAR_EVENTS.length;j++){
				var event=document.all[i][CLEAR_EVENTS[j]];
				if(event!=undefined){
					document.all[i][CLEAR_EVENTS[j]]=null;
					count++;
				}
			}
		}
	}
	
	if(window.attachEvent){
		window.attachEvent("onunload",clearEvents);
	}
		
	function getUniqueURL(url){
		if(url!=undefined&&url.indexOf("")===0){
			var d=new Date();
			d=d.getFullYear()+"-"+padNumber(d.getMonth()+1,2)+"-"+padNumber(d.getDate(),2);url="/v"+d+url;
		}
		return url;
	}
	
	var MESSAGES={"gallery.nophotos":"No photos","gallery.thumbs.start":"Start","gallery.thumbs.end":"End","gallery.toolbar.first":"First Photo","gallery.toolbar.prev":"Previous Photo","gallery.toolbar.view":"View Photo","gallery.toolbar.next":"Next Photo","gallery.toolbar.last":"Last Photo","gallery.slider.left":"Expand Window","gallery.slider.right":"Contract Window","photoviewer.toolbar.first":"Skip to first photo (Home)","photoviewer.toolbar.prev":"Previous photo (Left arrow)","photoviewer.toolbar.slideShow":"Start/Stop slideshow (Space)","photoviewer.toolbar.next":"Next photo (Right arrow)","photoviewer.toolbar.last":"Skip to last photo (End)","photoviewer.toolbar.email":"E-mail current photo","photoviewer.toolbar.permalink":"Link to photo","photoviewer.toolbar.close":"Close (Esc)","photoviewer.email.subject.photo":"Photo"};
	var VIEWER_INDEX=0;
	var SLIDE_DURATION=7000;
	var SLIDE_OFFSET=100;
	var SLIDE_PHOTOS=true;
	var FADE_BORDER=false;
	var FADE_STEPS=5;
	var MOVE_STEP=1;
	var PRELOAD_TIMEOUT=15000;
	var BORDER_WIDTH=7;
	var FONT_SIZE=10;
	var OFFSET_LEFT=0;
	var OFFSET_TOP=0;
	var REST_URL="/rest/";
	var P_IMG_ROOT="images/";
	var TOOLBAR_IMG="toolbar.png";
	var TOOLBAR_IMG_RUNNING="toolbar2.png";
	var TOOLBAR_IMG_BACK="toolbar-back";
	var TOOLBAR_IMG_MASK="toolbar-mask.png";
	var TOOLBAR_IMG_LOADING="loading-anim.gif";
	var TOOLBAR_W=440;
	var TOOLBAR_H=75;
	var TOOLBAR_IMG_W=420;
	var TOOLBAR_IMG_H=44;
	var TOOLBAR_FONT_COLOR="#c0c0c0";
	var TOOLBAR_FONT_STYLE="verdana, tahoma, helvetica, sans-serif";
	var VIEWER_ID_PREFIX="ZTAPhotos";
	var VIEWER_ID_BACK=VIEWER_ID_PREFIX+"Back";
	var VIEWER_ID_TOOLBAR=VIEWER_ID_PREFIX+"Toolbar";
	var VIEWER_ID_TOOLBAR_MAP=VIEWER_ID_PREFIX+"ToolbarMap";
	var VIEWER_ID_TOOLBAR_IMG=VIEWER_ID_PREFIX+"ToolbarImg";
	var VIEWER_ID_LOADING=VIEWER_ID_PREFIX+"Loading";
	var VIEWER_ID_TIME=VIEWER_ID_PREFIX+"Time";
	var VIEWER_ID_TITLE=VIEWER_ID_PREFIX+"Title";
	var VIEWER_ID_BYLINE=VIEWER_ID_PREFIX+"Byline";
	var TITLE_MAX_LENGTH=140;
	
	function PhotoViewer(win,handleKeys){
			this.setImageRoot=setImageRoot;
			this.add=addPhoto;
			this.show=showPhoto;
			this.close=closePhoto;
			this.isShown=isPhotoShown;
			this.setBackground=setPhotoBackground;
			this.setShowToolbar=setShowToolbar;
			this.setToolbarImage=setToolbarImage;
			this.setShowCallback=setShowCallback;
			this.setCloseCallback=setCloseCallback;
			this.setLoading=setPhotoLoading;
			this.addBackShade=addBackShade;
			this.addToolbar=addToolbar;
			this.addCaptions=addCaptions;
			this.next=nextPhoto;
			this.prev=prevPhoto;
			this.first=firstPhoto;
			this.last=lastPhoto;
			this.slideShow=slideShow;
			this.slideShowStop=slideShowStop;
			this.handleKey=viewerHandleKey;
			this.email=emailPhoto;
			this.favorite=favoritePhoto;
			this.permalink=linkPhoto;
			this.setBackgroundColor=setBackgroundColor;
			this.setBorderWidth=setBorderWidth;
			this.setSlideDuration=setSlideDuration;
			this.disablePanning=disablePanning;
			this.enablePanning=enablePanning;
			this.disableFading=disableFading;
			this.enableFading=enableFading;
			this.disableShade=disableShade;
			this.enableShade=enableShade;
			this.setShadeColor=setShadeColor;
			this.setShadeOpacity=setShadeOpacity;
			this.setFontSize=setFontSize;
			this.setFont=setFont;
			this.enableAutoPlay=enableAutoPlay;
			this.disableAutoPlay=disableAutoPlay;
			this.enableEmailLink=enableEmailLink;
			this.disableEmailLink=disableEmailLink;
			this.enablePhotoLink=enablePhotoLink;
			this.disablePhotoLink=disablePhotoLink;
			this.hideOverlappingElements=hideOverlappingElements;
			this.showOverlappingElements=showOverlappingElements;this.id=VIEWER_ID_PREFIX+VIEWER_INDEX;VIEWER_INDEX++;
			this.photos=[];
			this.index=0;
			this.win=(win!=undefined?win:window);
			this.shown=false;
			this.showToolbar=true;
			this.backgroundColor="white";
			this.shadeColor="white";
			this.shadeOpacity=0.7;
			this.borderColor="white";
			this.shadeColor="#fe82b4";
			this.shadeOpacity=0.7;
			this.borderWidth=BORDER_WIDTH;
			this.backgroundShade=true;
			this.fadePhotos=true;
			this.autoPlay=false;
			this.enableEmailLink=true;
			this.enablePhotoLink=true;
			this.slideDuration=SLIDE_DURATION;
			this.panPhotos=SLIDE_PHOTOS;
			this.fontSize=FONT_SIZE;
			this.font=undefined;
			if(handleKeys==undefined||handleKeys){
				if(this.win.addEventListener){
					this.win.addEventListener("keydown",viewerHandleKey,false);
				}
				else{
					this.win.document.attachEvent("onkeydown",viewerHandleKey);
				}
			}
			this.win.document.viewer=this;
	}
	
	function PhotoImg(id,src,w,h,time,title,byline){
		this.id=id;
		this.src=src;
		this.w=parseInt(w);
		this.h=parseInt(h);
		this.time=time;
		this.title=title;
		this.byline=byline;
	}
	
	function getViewer(){
		var viewer=undefined;
		var win=window;
		while(viewer==undefined){
			try{
				viewer=win.document.viewer;
			}
			catch(e){
				break;
			}
			if(win===win.parent){
				break;
			}
			win=win.parent;
		}
		return viewer;
	}

	function setImageRoot(root){
		P_IMG_ROOT=root;
	}
	
	function addPhoto(photo,title,time,byline){
		var type=typeof photo;
		if(typeof photo=="string"){
			photo=new PhotoImg(undefined,photo,undefined,undefined,time,title,byline);
		}
		this.photos.push(photo);
	}
	
	function setPhotoBackground(color,border,doShade){
		if(color!=undefined)
		this.backgroundColor=color;
		if(border!=undefined)
		this.borderColor=border;
		if(doShade!=undefined)
		this.backgroundShade=doShade;
	}
	
	function setPhotoLoading(isLoading){
		this.isLoading=isLoading;
		var elt=this.win.document.getElementById(VIEWER_ID_LOADING);
		if(elt==undefined)
		return;
		elt.style.display=isLoading?"":"none";
	}
	
	function setBackgroundColor(color){this.backgroundColor=color;this.borderColor=color;}
	function setBorderWidth(width){this.borderWidth=width;}
	function setSlideDuration(duration){this.slideDuration=duration;}
	function disableShade(){this.backgroundShade=false;}
	function enableShade(){this.backgroundShade=true;}
	function setShadeColor(color){this.shadeColor=color;}
	function setShadeOpacity(opacity){this.shadeOpacity=opacity;}
	function disableFading(){this.fadePhotos=false;}
	function enableFading(){this.fadePhotos=true;}
	function disablePanning(){this.panPhotos=false;}
	function enablePanning(){this.panPhotos=true;}
	function setFontSize(size){this.fontSize=size;}
	function setFont(font){this.font=font;}
	function enableAutoPlay(){this.autoPlay=true;}
	function disableAutoPlay(){this.autoPlay=false;}
	function enableEmailLink(){this.enableEmailLink=true;}
	function disableEmailLink(){this.enableEmailLink=false;}
	function enablePhotoLink(){this.enablePhotoLink=true;}
	function disablePhotoLink(){this.enablePhotoLink=false;}

	function showPhoto(index,cropWidth,opacity){
		if(this.photos.length===0){
			return true;
		}
		if(index!=undefined)
		this.index=index;
		if(this.index<0||this.index>=this.photos.length){
			log.error("Invalid photo index");
			return true;
		}
		var doc=this.win.document;
		var firstShow=false;
		if(!this.shown){
			firstShow=true;
			doc.viewer=this;
			try{
				this.hideOverlappingElements();
			}
			catch(e){}
		}
		var zIndex=16384;
		var winSize=getWindowSize(this.win);
		var availW=winSize.w-20;
		var availH=winSize.h-20;
		var scrollPos=getScrollPos(this.win);
		var scrollLeft=scrollPos.left;
		var scrollTop=scrollPos.top;
		this.addBackShade(zIndex);
		if(this.showToolbar){
			this.addToolbar(availW,zIndex);
			this.addCaptions();
		}
		var photo=this.photos[this.index];
		if(isNaN(photo.w)||isNaN(photo.h)){
			if(photo.preloadImage!=undefined){
				if(isNaN(photo.w)&&photo.preloadImage.width>0)photo.w=photo.preloadImage.width;
				if(isNaN(photo.h)&&photo.preloadImage.height>0)photo.h=photo.preloadImage.height;
			}
				else{
					this.index--;
					this.next();
					return false;
				}
			}
			this.shown=true;
			var offset=20;
			var pw=-1;
			var ph=-1;
			if(parseInt(photo.w)>availW||parseInt(photo.h)>availH){
				if(parseInt(photo.w)/availW>parseInt(photo.h)/availH){
					pw=availW-offset;
					ph=parseInt(pw*photo.h/photo.w);
				}
				else{
					ph=availH-offset;
					pw=parseInt(ph*photo.w/photo.h);
				}
			}
			else{
				pw=parseInt(photo.w);
				ph=parseInt(photo.h);
			}
			if(pw<=0||ph<=0){
				if(!this.showToolbar)throw"Missing photo dimension";
			}
			if(cropWidth==undefined)cropWidth=0;
			var photoDiv=doc.createElement("div");
			photoDiv.style.visibility="hidden";
			photoDiv.style.position="absolute";
			photoDiv.style.zIndex=zIndex;
			photoDiv.style.overflow="hidden";
			photoDiv.style.border=this.borderWidth+"px solid "+this.borderColor;
			photoDiv.style.textAlign="center";
			photoDiv.style.backgroundColor=this.backgroundColor;
			var photoElt=doc.createElement("img");
			photoElt.style.visibility="hidden";
			photoElt.style.position="relative";
			photoElt.style.backgroundColor=this.backgroundColor;
			photoElt.style.border="none";
			photoElt.style.cursor="pointer";
			photoElt.style.zIndex=(parseInt(photoDiv.style.zIndex)+1)+"";
			photoElt.onclick=closeViewer;
			if(opacity!=undefined&&this.fadePhotos){
				var fadeElt=(FADE_BORDER?photoDiv:photoElt);
				setOpacity(fadeElt,opacity);
			}
			var left=parseInt((availW-pw)/2)+OFFSET_LEFT;
			photoDiv.style.left=(left+scrollLeft+cropWidth/2)+"px";
			var top=parseInt((availH-ph)/2)+OFFSET_TOP;
			photoDiv.style.top=(top+scrollTop)+"px";
			photoElt.style.visibility="hidden";
			photoDiv.style.width=(pw-cropWidth)+"px";
			photoDiv.style.height=ph+"px";
			photoElt.style.width=pw+"px";
			photoElt.style.height=ph+"px";
			photoElt.src=photo.src;
			photoDiv.style.visibility="visible";
			photoElt.style.visibility="visible";
			photoDiv.appendChild(photoElt);
			doc.body.appendChild(photoDiv);
			if(this.photoDiv!=undefined){
				try{
					doc.body.removeChild(this.photoDiv);
				}
				catch(e){}
			}
			this.photoDiv=photoDiv;
			this.photoImg=photoElt;
			this.setLoading(false);
			if(this.showCallback!=undefined)this.showCallback(this.index);
			if(firstShow&&this.autoPlay){
				this.slideShow(true);
			}
			return false;
	}
	
	function isPhotoShown(){return this.shown;}
	function closeViewer(){getViewer().close();}

	function onPhotoLoad(event){
		var viewer=getViewer();
		if(viewer!=undefined){
			if(flickrHack(viewer,viewer.index)){
				viewer.setLoading(false);
				viewer.index--;
				viewer.next();
				return;
			}
			viewer.show();
		}
	}
	
	function closePhoto(){
		var win=this.win;
		if(win==undefined)win=window;
		var doc=win.document;
		var elt=this.photoDiv;
		if(elt!=undefined)doc.body.removeChild(elt);
		elt=doc.getElementById(VIEWER_ID_BACK);
		if(elt!=undefined)doc.body.removeChild(elt);
		elt=doc.getElementById(VIEWER_ID_TOOLBAR);
		if(elt!=undefined)doc.body.removeChild(elt);
		this.shown=false;
		this.slideShowRunning=false;
		this.slideShowPaused=false;
		try{
			this.showOverlappingElements();
		}
		catch(e){}
		if(this.closeCallback!=undefined)
		this.closeCallback(this.index);
	}
	
	function nextPhoto(n){
		if(this.isLoading)return;
		if(n==undefined)n=1;
		var oldIndex=this.index;
		if(this.index+n>=this.photos.length){
			if(n>1)this.index=this.photos.length-1;
			else return;
		}
		else if(this.index+n<0){
			if(n<-1)this.index=0;
			else return;
		}
		else{
			this.index+=n;
		}
		if(this.index==oldIndex)return;
		this.slideShowStop();
		var img=new Image();
		this.photos[this.index].preloadImage=img;
		this.setLoading(true);
		img.onload=onPhotoLoad;
		img.onerror=onPhotoLoad;
		img.src=this.photos[this.index].src;
	}
	
	function prevPhoto(n){
		if(n==undefined)n=1;
		this.next(-n);
	}
	
	function firstPhoto(){this.prev(this.photos.length);}
	function lastPhoto(){this.next(this.photos.length);}

	var slideTimeout;
	var slidePreloadImageLoaded=false;
	var slidePreloadTime=undefined;
	function slideShow(start){
		var doc=this.win.document;
		var viewer=this;
		var photoElt=this.photoImg;
		if(photoElt==undefined)return;
		var photoDiv=this.photoDiv;
		var fadeElt=(FADE_BORDER?photoDiv:photoElt);
		if(start!=undefined&&start===true){
			if(this.isLoading||this.index>=this.photos.length-1){
				return;
			}
			if(this.slideShowPaused){
				this.slideShowPaused=false;
				this.setToolbarImage(P_IMG_ROOT+"/"+TOOLBAR_IMG_RUNNING);
				return;
			}
			else if(this.slideShowRunning){
				this.slideShowPaused=true;
				this.setToolbarImage(P_IMG_ROOT+"/"+TOOLBAR_IMG);
				return;
			}
			else{
				this.slideShowRunning=true;
				this.slideShowPaused=false;
				this.slideFirstPhoto=true;
				this.setToolbarImage(P_IMG_ROOT+"/"+TOOLBAR_IMG_RUNNING);
			}
		}
		else if(this.slideShowPaused){
			window.setTimeout(function(){
				viewer.slideShow(false);
			},200);
			return;
		}
		else if(!this.slideShowRunning){
			this.setToolbarImage(P_IMG_ROOT+"/"+TOOLBAR_IMG);
			return;
		}
		var left=0;
		if(photoElt.leftOffset!=undefined){
			left=parseFloat(photoElt.leftOffset);
		}
		if(left===0){
			if(this.index<this.photos.length-1){
				slidePreloadImageLoaded=false;
				var slidePreloadImage=new Image();
				this.photos[this.index+1].preloadImage=slidePreloadImage;
				slidePreloadTime=getTimeMillis();
				slidePreloadImage.onload=onSlideLoad;
				slidePreloadImage.onerror=onSlideLoad;
				slidePreloadImage.src=this.photos[this.index+1].src;
			}
		}
		if(left>-SLIDE_OFFSET){
			left-=MOVE_STEP;
			if(-left<=FADE_STEPS){
				if(fadeElt.style.opacity!=undefined&&parseFloat(fadeElt.style.opacity)<1){
					if(this.fadePhotos&&this.photos[this.index].src!=undefined)setOpacity(fadeElt,-left/FADE_STEPS);
				}
			}
			else if(left+SLIDE_OFFSET<FADE_STEPS){
				if(this.index<this.photos.length-1&&!slidePreloadImageLoaded){
					if(slidePreloadTime!=undefined&&getTimeMillis()-slidePreloadTime>PRELOAD_TIMEOUT)slidePreloadImageLoaded=true;
					left++;
					this.setLoading(true);
				}
				else{
					if(this.index<this.photos.length-1&&this.fadePhotos&&this.photos[this.index].src!=undefined)setOpacity(fadeElt,(left+SLIDE_OFFSET)/FADE_STEPS);
					}
				}
				photoElt.leftOffset=left;
				if(this.panPhotos&&!this.slideFirstPhoto){
					photoElt.style.left=left+"px";
				}
			}
			else{
				if(this.index>=this.photos.length-1){
					this.slideShowRunning=false;
					this.slideShowPaused=false;
					this.setToolbarImage(P_IMG_ROOT+"/"+TOOLBAR_IMG);
					return;
				}
				this.index++;
				this.slideFirstPhoto=false;
				this.show(undefined,(this.panPhotos?SLIDE_OFFSET:0),0);
				fadeElt=(FADE_BORDER?this.photoDiv:this.photoImg);
				if(this.fadePhotos)setOpacity(fadeElt,0);
				this.photoImg.leftOffset=0;
				if(this.panPhotos)this.photoImg.style.left="0px";
			}
			var pause=this.slideDuration/SLIDE_OFFSET;
			if(this.slideFirstPhoto){
				pause/=2;
			}
			slideTimeout=window.setTimeout(function(){
				viewer.slideShow(false);
			},pause);
	}

	function onSlideLoad(event){
		var viewer=getViewer();
		if(viewer!=undefined){
			if(flickrHack(viewer,viewer.index+1)){
				var slidePreloadImage=viewer.photos[viewer.index+1].preloadImage;
				slidePreloadImage.src=viewer.photos[viewer.index+1].src;
				slidePreloadTime=getTimeMillis();
				return;
			}
			slidePreloadImageLoaded=true;
			viewer.setLoading(false);
		}
	}
	
	function slideShowStop(){
		this.slideShowRunning=false;
		this.slideShowPaused=false;
		var doc=this.win.document;
		var photoElt=this.photoImg;
		if(photoElt!=undefined){
			if(this.fadePhotos){
				var fadeElt=(FADE_BORDER?this.photoDiv:photoElt);
				setOpacity(fadeElt,1);
			}
			photoElt.style.left="0px";
		}
	}
	
	function addBackShade(zIndex){
		var doc=this.win.document;
		if(doc.getElementById(VIEWER_ID_BACK)!=undefined){
			return;
		}
		var photoBack=doc.createElement("div");
		photoBack.id=VIEWER_ID_BACK;
		photoBack.style.top="0px";
		photoBack.style.left="0px";
		photoBack.style.bottom="0px";
		photoBack.style.right="0px";
		photoBack.style.margin="0";
		photoBack.style.padding="0";
		photoBack.style.border="none";
		if(IE&&!(IE7&&STRICT_MODE)){
			photoBack.style.position="absolute";
			var docSize=getDocumentSize(this.win);
			photoBack.style.width=(docSize.w-21)+"px";
			photoBack.style.height=(docSize.h-4)+"px";
		}
		else{
			photoBack.style.position="fixed";
			photoBack.style.width="100%";
			photoBack.style.height="100%";
		}
		photoBack.style.zIndex=zIndex-1;
		photoBack.style.backgroundColor=this.shadeColor;
		if(this.backgroundShade)setOpacity(photoBack,this.shadeOpacity);
		else
		setOpacity(photoBack,0.0);
		photoBack.onclick=closeViewer;
		doc.body.appendChild(photoBack);
	}
	
	function addToolbar(availW,zIndex){
		var doc=this.win.document;
		var i;
		if(doc.getElementById(VIEWER_ID_TOOLBAR)!=undefined)
		return;
		var photoToolbar=doc.createElement("div");
		photoToolbar.id=VIEWER_ID_TOOLBAR;
		var bottom=10;
		if(IE&&!(IE7&&STRICT_MODE)){
			photoToolbar.style.position="absolute";
			if(IE7)bottom-=getScrollPos(this.win).top;
		}
		else{
			photoToolbar.style.position="fixed";
		}
		photoToolbar.style.bottom=bottom+"px";
		photoToolbar.style.left=(availW-TOOLBAR_W+10)/2+"px";
		photoToolbar.style.width=TOOLBAR_W+"px";
		photoToolbar.style.height=TOOLBAR_H+"px";
		photoToolbar.style.textAlign="center";
		setOpacity(photoToolbar,0.7);
		photoToolbar.style.zIndex=zIndex+1;
		var imgBack=TOOLBAR_IMG_BACK;

		imgBack+=".png";
		photoToolbar.style.backgroundImage="url('"+P_IMG_ROOT+"/"+imgBack+"')";
		photoToolbar.style.backgroundPosition="50% 0%";
		photoToolbar.style.backgroundRepeat="no-repeat";
		if(STRICT_MODE){
			photoToolbar.style.lineHeight="0.8em";
		}
		var toolbarMask=undefined;
		if(!this.enableEmailLink){
			toolbarMask=doc.createElement("img");
			toolbarMask.style.position="absolute";
			toolbarMask.style.width=44;
			toolbarMask.style.height=44;
			toolbarMask.style.left="289px";
			toolbarMask.style.top="0px";
			toolbarMask.src=P_IMG_ROOT+"/"+TOOLBAR_IMG_MASK;
			photoToolbar.appendChild(toolbarMask);
		}
		if(!this.enablePhotoLink){
			toolbarMask=doc.createElement("img");
			toolbarMask.style.position="absolute";
			toolbarMask.style.width=44;
			toolbarMask.style.height=44;
			toolbarMask.style.left="339px";
			toolbarMask.style.top="0px";
			toolbarMask.src=P_IMG_ROOT+"/"+TOOLBAR_IMG_MASK;
			photoToolbar.appendChild(toolbarMask);
		}
		var imgMap=doc.createElement("map");
		imgMap.name=VIEWER_ID_TOOLBAR_MAP;
		imgMap.id=VIEWER_ID_TOOLBAR_MAP;
		var areas=[];
		areas.push(["document.viewer.first()","17",getMessage("photoviewer.toolbar.first")]);
		areas.push(["document.viewer.prev()","68",getMessage("photoviewer.toolbar.prev")]);
		areas.push(["document.viewer.slideShow(true)","122",getMessage("photoviewer.toolbar.slideShow")]);
		areas.push(["document.viewer.next()","175",getMessage("photoviewer.toolbar.next")]);
		areas.push(["document.viewer.last()","227",getMessage("photoviewer.toolbar.last")]);
		if(this.enableEmailLink)areas.push(["document.viewer.email()","300",getMessage("photoviewer.toolbar.email")]);
		if(this.enablePhotoLink)areas.push(["document.viewer.permalink()","350",getMessage("photoviewer.toolbar.permalink")]);
		areas.push(["document.viewer.close()","402",getMessage("photoviewer.toolbar.close")]);
		for(i=0;i<areas.length;i++){
			var area=doc.createElement("area");
			area.href="javascript:void("+areas[i][0]+")";
			area.alt=areas[i][2];
			area.title=area.alt;
			area.shape="circle";
			area.coords=areas[i][1]+", 21, 22";
			area.onclick=blurElement;
			imgMap.appendChild(area);
		}
		var img=doc.createElement("img");
		img.id=VIEWER_ID_TOOLBAR_IMG;
		img.src=P_IMG_ROOT+"/"+TOOLBAR_IMG;
		img.width=TOOLBAR_IMG_W;
		img.height=TOOLBAR_IMG_H;
		img.style.border="none";
		img.style.background="none";
		img.style.margin="4px";
		img.useMap="#"+VIEWER_ID_TOOLBAR_MAP;
		photoToolbar.appendChild(imgMap);
		photoToolbar.appendChild(img);
		var loadingIcon=doc.createElement("img");
		loadingIcon.id=VIEWER_ID_LOADING;
		loadingIcon.width=16;
		loadingIcon.height=16;
		loadingIcon.style.display="none";
		loadingIcon.style.position="absolute";
		loadingIcon.style.left=(273-8)+"px";
		loadingIcon.style.top=(24-8)+"px";
		loadingIcon.src=P_IMG_ROOT+"/"+TOOLBAR_IMG_LOADING;
		loadingIcon.style.border="none";
		loadingIcon.style.background="none";
		photoToolbar.appendChild(loadingIcon);
		photoToolbar.appendChild(doc.createElement("br"));
		var photoTime=doc.createElement("span");
		photoTime.id=VIEWER_ID_TIME;
		photoTime.position="relative";
		photoTime.style.color=TOOLBAR_FONT_COLOR;
		photoTime.style.fontFamily=TOOLBAR_FONT_STYLE;
		photoTime.style.fontSize=this.fontSize+"px";
		if(STRICT_MODE){
			photoTime.style.lineHeight=this.fontSize+"px";
		}
		if(this.font!=undefined){
			photoTime.style.font=this.font;
		}
		photoTime.style.cssFloat="none";
		photoTime.style.textAlign="right";
		photoTime.style.padding="0px 10px";
		photoTime.appendChild(doc.createTextNode(" "));
		photoToolbar.appendChild(photoTime);
		var photoTitle=doc.createElement("span");
		photoTitle.id=VIEWER_ID_TITLE;
		photoTitle.position="relative";
		photoTitle.style.color=TOOLBAR_FONT_COLOR;
		photoTitle.style.fontFamily=TOOLBAR_FONT_STYLE;
		photoTitle.style.fontSize=this.fontSize+"px";
		if(STRICT_MODE){
			photoTitle.style.lineHeight=this.fontSize+"px";
		}
		if(this.font!=undefined){
			photoTitle.style.font=this.font;
		}
		photoTitle.style.cssFloat="none";
		photoTitle.style.textAlign="left";
		photoTitle.style.paddingRight="20px";
		photoTitle.appendChild(doc.createTextNode(" "));
		photoToolbar.appendChild(photoTitle);
		doc.body.appendChild(photoToolbar);
		var photoByline=doc.createElement("div");
		photoByline.appendChild(doc.createTextNode(""));
		photoByline.style.color=TOOLBAR_FONT_COLOR;
		photoByline.style.fontFamily=TOOLBAR_FONT_STYLE;
		photoByline.style.fontSize=this.fontSize+"px";
		if(this.font!=undefined){
			photoByline.style.font=this.font;
		}
		photoByline.id=VIEWER_ID_BYLINE;
		photoByline.style.position="absolute";
		photoByline.style.right="5px";
		photoByline.style.bottom="5px";
		photoByline.style.zIndex=zIndex+1;
		doc.body.appendChild(photoByline);
	}
	
	function blurElement(event){
		var target=getEventTarget(getEvent(event));
		if(target!=undefined)
		target.blur();
	}
	
	function setToolbarImage(img){
		var doc=this.win.document;
		var elt=doc.getElementById(VIEWER_ID_TOOLBAR_IMG);
		if(elt!=undefined)elt.src=img;
	}
	
	function setShowToolbar(doShow){
		this.showToolbar=doShow;
	}
	
	function addCaptions(){
		var photo=this.photos[this.index];
		var doc=this.win.document;
		var photoTime=doc.getElementById(VIEWER_ID_TIME);
		var photoTitle=doc.getElementById(VIEWER_ID_TITLE);
		var photoByline=doc.getElementById(VIEWER_ID_BYLINE);
		var time=(this.index+1)+"/"+this.photos.length;
		if(photo.time!=undefined){
			time+=" ["+photo.time+"]";
		}
	
		photoTime.firstChild.nodeValue=time;
		var title=(photo.title!=undefined?photo.title:"");
		photoTitle.title="";
		photoTitle.alt="";
	
		if(title.length>TITLE_MAX_LENGTH){
			photoTitle.title=title;
			photoTitle.alt=title;
			title=title.substring(0,TITLE_MAX_LENGTH)+" ...";
		}
	
		if(title.indexOf("\n")!==0){
			title=title.replace("\n","<br />");
			photoTitle.innerHTML=title;
		}
		else{
			photoTitle.nodeValue=title;
		}
	
		if(photo.byline!=undefined&&photo.byline.length>0){
			photoByline.firstChild.nodeValue=photo.byline;
		}
		else{
			photoByline.firstChild.nodeValue="";
		}
	}
	
	function setCloseCallback(callback){this.closeCallback=callback;}
	function setShowCallback(callback){this.showCallback=callback;}

	function emailPhoto(){
		var photo=this.photos[this.index];
		var doc=this.win.document;
		var title=(photo.title!=undefined?photo.title:getMessage("photoviewer.email.subject.photo"));
		var mailtoLink="mailto:?subject="+title+"&body="+getPhotoURL(photo.src);
		doc.location.href=mailtoLink;
	}
	
	function getPhotoURL(url){
		var loc=document.location;
		if(/\w+:\/\/.+/.test(url)){
			return url;
		}
		else if(url.indexOf("/")===0){
			return loc.protocol+"//"+loc.host+url;
		}
		else{
			var path=loc.pathname;
			var pos=path.lastIndexOf("/");
			if(pos!=-1){
				path=path.substring(0,pos);
			}
			return loc.protocol+"//"+loc.host+path+"/"+url;
		}
	}
	
	function linkPhoto(){var photo=this.photos[this.index];window.open(photo.src);}

	function favoritePhoto(){
		var photo=this.photos[this.index];
		var doc=this.win.document;
		var restURL=REST_URL+"markfeatured?id"+photo.id;
		try{
			var res=getResponse(restURL,false,true);
		}
		catch(e){
			return;
		}
	}
	
	function hideOverlappingElements(node){
		if(node==undefined){
			node=this.win.document.body;
			this.hideOverlappingElements(node);
			return;
		}
		if(node.style!=undefined&&node.style.visibility!="hidden"){
			var nodeName=node.nodeName.toLowerCase();
			if((node.className!=undefined&&node.className.indexOf("SlideshowDoHide")!=-1)||(IE&&(nodeName=="select"||nodeName=="object"||nodeName=="embed"))){
				node.style.visibility="hidden";
				if(this.hiddenElements==undefined)this.hiddenElements=[];
				this.hiddenElements.push(node);
			}
		}
		if(node.childNodes!=undefined){
			var i;
			for(i=0;
			i<node.childNodes.length;
			i++){
				this.hideOverlappingElements(node.childNodes[i]);
			}
		}
	}
	
	function showOverlappingElements(){
		var i;
		if(this.hiddenElements!=undefined){
			for(i=0;
			i<this.hiddenElements.length;
			i++){
				this.hiddenElements[i].style.visibility="visible";
			}
			this.hiddenElements=[];
		}
	}
	
	function viewerHandleKey(event){
		if(!getViewer)return true;
		var viewer=getViewer();
		if(viewer==undefined||!viewer.shown)return true;
		event=getEvent(event);
		if(event.ctrlKey||event.altKey)return true;
		var keyCode=event.keyCode;
		switch(keyCode){
			case 37:case 38:viewer.prev();
			break;
			case 39:case 40:viewer.next();
			break;
			case 33:viewer.prev(10);
			break;
			case 34:viewer.next(10);
			break;
			case 36:viewer.first();
			break;
			case 35:viewer.last();
			break;
			case 32:case 13:viewer.slideShow(true);
			break;
			case 27:viewer.close();
			break;
			default:return true;
		}
		preventDefault(event);
		return false;
	}
	
	function flickrHack(viewer,index){
		if(viewer.photos[index]!=undefined){
			var preloadPhoto=viewer.photos[index].preloadImage;
			if(preloadPhoto!=undefined&&preloadPhoto.width==500&&preloadPhoto.height==375){
				var flickrRE=/.+static\.flickr\.com.+_b\.jpg/;
				if(flickrRE.test(preloadPhoto.src)){
					viewer.photos[index].src=viewer.photos[index].src.replace(/_b\.jpg/,"_o.jpg");
					return true;
				}
			}
		}
		return false;
	}
	
	function findPhotosTT(viewer,node){
		var i;
		if(node.nodeName.toLowerCase()=="a"){
			var onclick=node.getAttribute("onclick");
			if(onclick==undefined){
				onclick=node.onclick;
			}
			if(onclick!=undefined&&new String(onclick).indexOf("popupImg")!=-1){
				var popupRE=/.*popupImg\((.+?),(.+?),(.+?)\).*/;
				if(popupRE.test(onclick)){
					var url,w,h;
					if(node.photoUrl!=undefined){
						url=node.photoUrl;
						w=node.photoW;
						h=node.photoH;
					}
					else{
						url=RegExp.$1;
						if(url.charAt(0)=="'"&&url.charAt(url.length-1)=="'")url=url.substring(1,url.length-1);
						w=parseInt(RegExp.$2);
						h=parseInt(RegExp.$3);
					}
					var photo=new PhotoImg(undefined,url,w,h);
					var found=false;
					for(i=0;
					i<viewer.photos.length;
					i++){
						if(viewer.photos[i].src==photo.src){
							found=true;
							break;
						}
					}
					if(!found)viewer.add(photo);
				}
			}
		}
		if(node.childNodes!=undefined){
			for(i=0;
			i<node.childNodes.length;
			i++){
				findPhotosTT(viewer,node.childNodes[i]);
			}
		}
	}
	
	var defaultViewer=undefined;
	
	function popupImg(url,w,h,backColor,showToolbar){
		var i;
		if(defaultViewer==undefined)defaultViewer=new PhotoViewer();
		else{
			defaultViewer.photos=[];
			defaultViewer.index=0;
		}
		if(backColor!=undefined)defaultViewer.setBackground(backColor,backColor,false);
		if(showToolbar==undefined||showToolbar){
			findPhotosTT(defaultViewer,window.document.body);
			for(i=0;
			i<defaultViewer.photos.length;
			i++){
				if(defaultViewer.photos[i].src==url){
					defaultViewer.show(i);
				}
			}
		}
		if(defaultViewer.photos===undefined||defaultViewer.photos.length===0){
			defaultViewer.setShowToolbar(false);
			defaultViewer.add(new PhotoImg(undefined,url,w,h));
			defaultViewer.show();
		}
		return false;
	}