Xoffset= 16;
Yoffset= 16;

var old,skn,iex=(document.all),yyy=-1000;

var ns4=document.layers
var ns6=document.getElementById&&!document.all
var ie4=document.all

if (ns4)
skn=document.thumbnail_div
else if (ns6)
skn=document.getElementById("thumbnail_div").style
else if (ie4)
skn=document.all.thumbnail_div.style
if(ns4)document.captureEvents(Event.MOUSEMOVE);
else{
skn.visibility="visible"
skn.display="none"
}
document.onmousemove=get_mouse;

function showImg(msg){
	var content="<div id='thumbnail'><img src=http://www.towerdefence.net/images/thumbnails/"+msg+" /></div>";
	yyy=Yoffset;
	if(ns4){skn.document.write(content);skn.document.close();skn.visibility="visible"}
	if(ns6){document.getElementById("thumbnail_div").innerHTML=content;skn.display=''}
	if(ie4){document.all("thumbnail_div").innerHTML=content;skn.display=''}
}

function get_mouse(e){
	var x=(ns4||ns6)?e.pageX:event.x+document.body.scrollLeft;
	skn.left=x+Xoffset;
	var y=(ns4||ns6)?e.pageY:event.y+document.body.scrollTop;
	skn.top=y+yyy;
}

function hideImg(){
	yyy=-1000;
	if(ns4){skn.visibility="hidden";}
	else if (ns6||ie4)
	skn.display="none"
}