Prova a vedere questo.
Su IE funziona, su FF non l'ho testato e quindi non garantisco
Codice PHP:
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Tooltip image</title>
<script language="javascript">
var mouseX
var mouseY
function Tooltip(foto){
document.getElementById('pop').innerHTML="[img]"+foto+"[/img]"
}
function Show(obj){
document.getElementById(obj).style.display="block";
}
function Hide(obj){
document.getElementById(obj).style.display="none";
}
function coords(e){
if(!e) e=window.event;
mouseX = e.clientX;
mouseY = e.clientY;
document.getElementById('pop').style.left=mouseX;
document.getElementById('pop').style.top=mouseY;
}
document.onmousemove=coords;
</script>
</head>
<body bgcolor="#ffffff">
<div id="pop" style="position:absolute;z-index:2;width:410px;height:277px;background-color:#ffffff;top:200;left:100;"></div>
<div>
<table>
<tr>
<td>[img]img1_small.jpg[/img]</td>
<td>[img]img2_small.jpg[/img]</td>
<td>[img]img3_small.jpg[/img]</td>
</tr>
</table>
</div>
</body>
</html>