// -------------------------------------------------------------------
// Image Thumbnail Viewer II- By Dynamic Drive, available at: http://www.dynamicdrive.com
// Last updated: Feb 5th, 2007
// -------------------------------------------------------------------

var thumbnailviewer2 = {
	enableTitle: true, //Should "title" attribute of link be used as description?
	enableTransition: true, //Enable fading transition in IE?
	hideimgmouseout: false, //Hide enlarged image when mouse moves out of anchor link? (if enlarged image is hyperlinked, always set to false!)
	
	/////////////No need to edit beyond here/////////////////////////
	
	iefilterstring: 'progid:DXImageTransform.Microsoft.GradientWipe(GradientSize=1.0 Duration=0.7)', //IE specific multimedia filter string
	iefiltercapable: document.compatMode && window.createPopup? true : false, //Detect browser support for IE filters
	preloadedimages:[], //array to preload enlarged images (ones set to display "onmouseover"
	targetlinks:[], //array to hold participating links (those with rel="enlargeimage:initType")
	alreadyrunflag: false, //flag to indicate whether init() function has been run already come window.onload


loadimage:function(linkobj){
		//var imagepath=linkobj.getAttribute("href") //Get URL to enlarged image
		
		var imagepath=linkobj.getAttribute("rev").split("::")[1]
		var showcontainer=document.getElementById(linkobj.getAttribute("rev").split("::")[0]) //Reference container on page to show enlarged image in
		//var dest=linkobj.getAttribute("rev").split("::")[1] //Get URL enlarged image should be linked to, if any
	
		var description=(thumbnailviewer2.enableTitle && linkobj.getAttribute("title"))? linkobj.getAttribute("title") : "" //Get title attr
		var imageHTML='<img src="'+imagepath+'" style="border: 1px solid #ffffff" />' //Construct HTML for enlarged image
	//	if (typeof dest!="undefined") //Hyperlink the enlarged image?
//		imageHTML='<a href="'+dest+'">'+imageHTML+'</a>'
		if (description!="") //Use title attr of the link as description?
		imageHTML+='<br />'+description
		if (this.iefiltercapable){ //Is this an IE browser that supports filters?
		showcontainer.style.filter=this.iefilterstring
		showcontainer.filters[0].Apply()
		}
		showcontainer.innerHTML=imageHTML

		this.featureImage=showcontainer.getElementsByTagName("img")[0] //Reference enlarged image itself
		this.featureImage.onload=function(){ //When enlarged image has completely loaded
		if (thumbnailviewer2.iefiltercapable) //Is this an IE browser that supports filters?
		showcontainer.filters[0].Play()
		}
		this.featureImage.onerror=function(){ //If an error has occurred while loading the image to show
		if (thumbnailviewer2.iefiltercapable) //Is this an IE browser that supports filters?
		showcontainer.filters[0].Stop()
		}
		},


hideimage:function(linkobj){
		var showcontainer=document.getElementById(linkobj.getAttribute("rev").split("::")[0]) //Reference container on page to show enlarged image in
		showcontainer.innerHTML=""
		},


cleanup:function(){ //Clean up routine on page unload
		if (this.featureImage){this.featureImage.onload=null; this.featureImage.onerror=null; this.featureImage=null}
		
		this.showcontainer=null
		
		for (var i=0; i<this.targetlinks.length; i++){
			this.targetlinks[i].onclick=null
			this.targetlinks[i].onmouseover=null
			this.targetlinks[i].onmouseout=null
		}
		},


addEvent:function(target, functionref, tasktype){ //assign a function to execute to an event handler (ie: onunload)
		var tasktype=(window.addEventListener)? tasktype : "on"+tasktype
		if (target.addEventListener)
			target.addEventListener(tasktype, functionref, false)
		else if (target.attachEvent)
			target.attachEvent(tasktype, functionref)
	},


init:function(){ //Initialize thumbnail viewer script
		this.iefiltercapable=(this.iefiltercapable && this.enableTransition) //True or false: IE filters supported and is enabled by user
		var pagelinks=document.getElementsByTagName("a")
		
		for (var i=0; i<pagelinks.length; i++){ //BEGIN FOR LOOP
			
			if (pagelinks[i].getAttribute("rel") && /enlargeimage:/i.test(pagelinks[i].getAttribute("rel"))){ 
			//Begin if statement: Test for rel="enlargeimage"
				var initType=pagelinks[i].getAttribute("rel").split("::")[1] //Get display type of enlarged image ("click" or "mouseover")
				
				if (initType=="mouseover"){ 
				//If type is "mouseover", preload the enlarged image for quicker display
					this.preloadedimages[this.preloadedimages.length]=new Image()
					this.preloadedimages[this.preloadedimages.length-1].src=pagelinks[i].getAttribute("rev").split("::")[1]
					
					//	pagelinks[i]["onclick"]=function()
//					{ //Cancel default click action
//					return false
//					}
				}
				
				pagelinks[i]["on"+initType]=function(){ //Load enlarged image based on the specified display type (event)
					thumbnailviewer2.loadimage(this) //Load image
					return false
				}
				
				if (this.hideimgmouseout)
					pagelinks[i]["onmouseout"]=function(){
					thumbnailviewer2.hideimage(this)
				}
				this.targetlinks[this.targetlinks.length]=pagelinks[i] //store reference to target link
			} //end if statement
		} //END FOR LOOP
		
		
		} //END init() function
		
}
		
		
		if (document.addEventListener) //Take advantage of "DOMContentLoaded" event in select Mozilla/ Opera browsers for faster init
		thumbnailviewer2.addEvent(document, function(){thumbnailviewer2.alreadyrunflag=1; thumbnailviewer2.init()}, "DOMContentLoaded") //Initialize script on page load
		else if (document.all && document.getElementsByTagName("a").length>0){ //Take advantage of "defer" attr inside SCRIPT tag in IE for instant init
		thumbnailviewer2.alreadyrunflag=1
		thumbnailviewer2.init()
		}
		thumbnailviewer2.addEvent(window, function(){if (!thumbnailviewer2.alreadyrunflag) thumbnailviewer2.init()}, "load") //Default init method: window.onload
		thumbnailviewer2.addEvent(window, function(){thumbnailviewer2.cleanup()}, "unload")