/*
Simple Image Trail script- By JavaScriptKit.com
Visit http://www.javascriptkit.com for this script and more
This notice must stay intact
*/

var offsetfrommouse=[-250,230]; //image x,y offsets from cursor position in pixels. Enter 0,0 for no offset
var displayduration=0; //duration in seconds image should remain visible. 0 for always.
var currentimageheight = 270;	// maximum image size.

if (document.getElementById || document.all){
	document.write('<div id="trailimageid">');
	document.write('</div>');
}

function gettrailobj(){
if (document.getElementById)
	return document.getElementById("trailimageid").style
else if (document.all)
	return document.all.trailimageid.style
}

function gettrailobjnostyle(){
	if (document.getElementById)
	return document.getElementById("trailimageid")
else if (document.all)
	return document.all.trailimagid
}


function truebody(){
return (!window.opera && document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function findPos(elem) {
	var curLeft = curTop = 0;
	
	if(elem.offsetParent) {
		do {
			//console.log('elem=%s#%s; top=%d',elem,elem.id,elem.offsetTop);
			curLeft += elem.offsetLeft;
			curTop += elem.offsetTop;
		} while(elem = elem.offsetParent)
	}

	return [curLeft,curTop];
}

function showtrail(sender,imagename,height,offsetX,offsetY){
	//console.clear();
	var senderPos = findPos(sender);
	//console.log('sender = %s (%d)', sender, senderPos[1]);
	//,title,description,ratingaverage,ratingnumber,showthumb
	if (height > 0){
		currentimageheight = height;
	}

	document.onmousemove=followmouse;

	var trailObj = gettrailobjnostyle();
	var popupPos = findPos(trailObj);
	//console.log('trailObj.top=%d',popupPos[1]);
	
	newHTML = '<div id="ezineCoverPopUp" style="top:'+ (senderPos[1]-popupPos[1]+(offsetY!=null?offsetY:0)) + 'px;'
		+ ('left:' + offsetX + 'px;') + '">';
	newHTML = newHTML + '<div align="center" style="padding: 8px 2px 2px 2px;"><img src="' + imagename + '" border="0"></div>';

	newHTML = newHTML + '</div>';

	trailObj.innerHTML = newHTML;

	var trailObjStyle = gettrailobj();
	trailObjStyle.visibility="visible";
	//trailObj.top = '400px !important';
	//console.log('trailObj=%s', trailObj);
}


function hidetrail(){
	gettrailobj().visibility="hidden"
	document.onmousemove=""
	gettrailobj().left="-500px"

}

function followmouse(e){
	try {
		/*

		var xcoord=offsetfrommouse[0]
		var ycoord=offsetfrommouse[1]
		
	
		var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15
		var docheight=document.all? Math.min(truebody().scrollHeight, truebody().clientHeight) : Math.min(window.innerHeight)
	
		alert("xccord = " + xcoord + "; ycoord = " + ycoord + "\r\n" 
			  + "docwidth=" + docwidth + "; docheight=" + docheight );
		
		//if (document.all){
		//	gettrailobjnostyle().innerHTML = 'A = ' + truebody().scrollHeight + '<br>B = ' + truebody().clientHeight;
		//} else {
		//	gettrailobjnostyle().innerHTML = 'C = ' + document.body.offsetHeight + '<br>D = ' + window.innerHeight;
		//}
	
		if (typeof e != "undefined"){
			if (docwidth - e.pageX < 380){
				alert("case 1");
				xcoord = e.pageX - xcoord - 400; // Move to the left side of the cursor
			} else {
				alert("case 2: " + e.pageX);
				xcoord += e.pageX;
			}
			if (docheight - e.pageY < (currentimageheight + 110)){
				ycoord += e.pageY - Math.max(0,(110 + currentimageheight + e.pageY - docheight - truebody().scrollTop));
			} else {
				ycoord += e.pageY;
			}
	
		} else if (typeof window.event != "undefined"){
			if (docwidth - event.clientX < 380){
				xcoord = event.clientX + truebody().scrollLeft - xcoord - 400; // Move to the left side of the cursor
			} else {
				xcoord += truebody().scrollLeft+event.clientX
			}
			if (docheight - event.clientY < (currentimageheight + 110)){
				ycoord += event.clientY + truebody().scrollTop - Math.max(0,(110 + currentimageheight + event.clientY - docheight));
			} else {
				ycoord += truebody().scrollTop + event.clientY;
			}
		}
	
		alert("xccord = " + xcoord + "; ycoord = " + ycoord + "\r\n" 
			  + "docwidth=" + docwidth + "; docheight=" + docheight );
		
		var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15
		var docheight=document.all? Math.max(truebody().scrollHeight, truebody().clientHeight) : Math.max(document.body.offsetHeight, window.innerHeight)
			if(ycoord < 0) { ycoord = ycoord*-1; }
		alert(gettrailobj() + "\r\n" + gettrailobj().left);
		gettrailobj().left=10+"px";
		gettrailobj().top=ycoord+"px";
		
		*/
	} catch(ex) {
		alert(ex);
	}
	
	document.onmousemove = "";

}