Hi..
here is my code, for ie/ff mouse wheel event is firiing only for scroll track area, not for whole iframe/div.
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
<link rel="stylesheet" type="text/css" href="style/jquery.jscrollpane.css">
<script type="text/javascript" src="script/jquery-1.3.2.js"></script>
<script src="script/jquery.jscrollpane.js"></script>
<script src="script/jquery.mousewheel.js"></script>
<script src="script/jquery.jscrollpane.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$('#test').jScrollPane({ showArrows:true , scrollbarWidth:5});
});
</script>
</head>
<body>
<div id="test" style="height:300px;width:900px;overflow: auto;">
<iframe style="height:1300px;width:900px;" src="http://www.google.com" scrolling="no"></iframe>
</div>
</body>
</html>