var offsetfrommouse=[-220,-530]; //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 defaultimageheight = 0;	// maximum image size.
var defaultimagewidth = 0;	// maximum image size.

var timer;

function gettrailobj(){
if (document.getElementById)
return document.getElementById("preview_div").style
}

function gettrailobjnostyle(){
if (document.getElementById)
return document.getElementById("preview_div")
}


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


function hidetrail(){	
	gettrailobj().display= "none";
	document.onmousemove=""
	gettrailobj().left="-500px"
	clearTimeout(timer);
}

function showtrail(imagename, title, width, height, imageTitle, ImageDescription) {
	i = imagename
	t = title
	w = width
	h = height
	it = imageTitle 
	id = ImageDescription 
	timer = setTimeout("show('"+i+"',t,w,h,it,id);",200);
}
function show(imagename, title, width, height, imageTitle, ImageDescription) {
 
    var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth - offsetfrommouse[0]
	var docheight=document.all? Math.min(truebody().scrollHeight, truebody().clientHeight) : Math.min(window.innerHeight)

	if( (navigator.userAgent.indexOf("Konqueror")==-1  || navigator.userAgent.indexOf("Firefox")!=-1 || (navigator.userAgent.indexOf("Opera")==-1 && navigator.appVersion.indexOf("MSIE")!=-1)) && (docwidth>650 && docheight>500)) {
		( width == 0 ) ? width = defaultimagewidth: '';
		( height == 0 ) ? height = defaultimageheight: '';
			
		width+=30
		height+=-50
		defaultimageheight = height
		defaultimagewidth = width
	
		document.onmousemove=followmouse; 

		
		newHTML = '<div class="border_preview" style="width:'+  width +'px'+ height +'px"><div id="loader_container"><div id="loader"><div align="left"><img src="../Images/dnnanim.gif"></div><div id="loader_bg"><div id="progress"> </div></div></div></div>';
//		newHTML = newHTML + '<h2 class="title_h2">' + ' '+title + '</h2>'

			newHTML = newHTML + '<div class="pg-brdr-a" style="background-color: #fff; border:1px  solid #999; padding:2px;" ><img onload="javascript:remove_loading();" src="' + imagename + '" border="0" ></div>';
		newHTML = newHTML + '</div>';
		 //<reference path="../Images/dnnanim.gif" />
//Loading template preview...
		if(navigator.userAgent.indexOf("MSIE")!=-1 && navigator.userAgent.indexOf("Opera")==-1 ){
			newHTML = newHTML+'<iframe src="about:blank" scrolling="no" frameborder="0" width="'+width+'" height="'+height+'"></iframe>';
		}		

		gettrailobjnostyle().innerHTML = newHTML;
		gettrailobj().display="block";
	}
}

function followmouse(e) {

    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)

    if (typeof e != "undefined") {
        if (docwidth - e.pageX < defaultimagewidth + 2 * offsetfrommouse[0]) {
            xcoord = e.pageX - xcoord - defaultimagewidth; // Move to the left side of the cursor
        } else {
            xcoord += e.pageX;
        }
        if (docheight - e.pageY < defaultimageheight + 2 * offsetfrommouse[1]) {
            ycoord += e.pageY - Math.max(0, (2 * offsetfrommouse[1] + defaultimageheight + e.pageY - docheight - truebody().scrollTop));
        } else {
            ycoord += e.pageY;
        }

    } else if (typeof window.event != "undefined") {
        if (docwidth - event.clientX < defaultimagewidth + 2 * offsetfrommouse[0]) {
            xcoord = event.clientX + truebody().scrollLeft - xcoord - defaultimagewidth; // Move to the left side of the cursor
        } else {
            xcoord += truebody().scrollLeft + event.clientX
        }
        if (docheight - event.clientY < (defaultimageheight + 2 * offsetfrommouse[1])) {
            ycoord += event.clientY + truebody().scrollTop - Math.max(0, (2 * offsetfrommouse[1] + defaultimageheight + event.clientY - docheight));
        } else {
            ycoord += truebody().scrollTop + event.clientY;
        }
    }
    gettrailobj().left = xcoord + "px"
    gettrailobj().top = ycoord + "px"
}