

add this to template -> footer








/*Begin Phuxuyen.net Scroll to top*/
<script type="text/javascript" src="clientscript/totop.js"></script>
<style type='text/css'>
#totop,#totop2{
    position: fixed;right: -30px;bottom: -80px;
    width: 149px;height: 249px;overflow: hidden;
    cursor: pointer;display: none;
    background: url(../images/up.png) no-repeat 0px 0;
    z-index: 9999;
}

#totop2{
    background: url(../images/up.png) no-repeat -149px 0;
}
</style>
/*End Phuxuyen.net Scroll to top*/