<link type="text/css" href="路徑/jquery.jscrollpane.css" rel="stylesheet" media="all" />
<script type="text/javascript" src="路徑/jquery.mousewheel.js"></script>
<script type="text/javascript" src="路徑/jquery.jscrollpane.min.js"></script>

$(function(){
$("#contentDiv").jScrollPane();
})