JavaScript DHTML/jQuery/unload
To display an alert when a page is unloaded:
$(window).unload( function () { alert("Bye now!"); } );
Unload event
<html>
<head>
<script type="text/javascript" src="js/jquery-1.3.2.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$(window).unload( function () { alert("Bye now!"); } );
});
</script>
</head>
<body>
<body>
<form action="javascript:alert("success!");">
<div>
<input type="text" />
<input type="submit" />
</div>
</form>
<div></div>
</body>
</html>