Ho trovato in rete questo codice per recuperare la posizione del mouse ma funziona solo in Explorer e chrome.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Aratti@py</title>
<script language="JavaScript" type="text/JavaScript">
function checkS(e){
// capture the mouse position
var posx = 0;
var posy = 0;
if (!e) var e = window.event;
if (e.pageX || e.pageY)
{
posx = e.pageX;
posy = e.pageY;
}
else if (e.clientX || e.clientY)
{
posx = e.clientX;
posy = e.clientY;
}
document.getElementById('pos').innerHTML = 'Mouse position is: X='+posx+' Y='+posy;
document.getElementById('pos').style.left = posx;
document.getElementById('pos').style.top = posy;
document.getElementById('pos').style.display='bloc k';
}
</script>
</head>
<body onClick="checkS(event)">
<div id="pos" style="position:absolute; display:none;">test</div>
</body>
</html>