take a look at: http://api.jquery.com/mousemove
there is a working example:
<!DOCTYPE html>
<html>
<head>
<style>
div { width:220px; height:170px; margin;10px; margin-right:50px;
background:yellow; border:2px groove; float:right; }
p { margin:0; margin-left:10px; color:red; width:220px;
height:120px; padding-top:70px;
float:left; font-size:14px; }
span { display:block; }
</style>
<script src="http://code.jquery.com/jquery-1.5.js"></script>
</head>
<body>
<p>
Try scrolling too.
<span>Move the mouse over the div.</span>
<span> </span>
</p>
<div></div>
<script>
$("div").mousemove(function(e){
var pageCoords = "( " + e.pageX + ", " + e.pageY + " )";
var clientCoords = "( " + e.clientX + ", " + e.clientY + " )";
$("span:first").text("( e.pageX, e.pageY ) - " + pageCoords);
$("span:last").text("( e.clientX, e.clientY ) - " + clientCoords);
});
</script>
</body>
</html>