var offsetfrommouse=[15,-150]; //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 = 10;	// maximum image size.

var defaultimagewidth = 10;	// 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){

	i = imagename

	t = title

	w = width

	h = height

	timer = setTimeout("show('"+i+"',t,w,h);",200);

}

function show(imagename,title,width,height){

  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+=55

  	defaultimageheight = height

  	defaultimagewidth = width

  	document.onmousemove=followmouse; 

  	newHTML = '<div class="border_preview" style="width:'+  (width*1+50) +'px;height:'+ (height*1+50) +'px"><div id="loader_container"><div id="loader"><div align="center">Loading product preview...</div><div id="loader_bg"><div id="progress"> </div></div></div></div>';

  	newHTML = newHTML + '<font class="title_h2">' + ' '+title + '</font>'

  	newHTML = newHTML + '<div class="preview_temp_load"><img onload="javascript:remove_loading();" src="' + imagename + '" border="0" width="' + width + '" height="' + height + '"></div>';

  	newHTML = newHTML + '</div>'; 

  	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"

}