1) Load jQuery and the Mouse Wheel plugin Mouse Wheel plugin is here. <script type='text/javascript' src='http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js?ver=1.3.2'></script> <script type='text/javascript' src='/js/jquery.mousewheel.min.js'></script> 2) Attach mousewheel event to body The “30” represents speed. preventDefault ensures the page won’t scroll down. $(function() { $("bo