*{padding:0; margin:0}
#totop{position:fixed;bottom:20px;right:15px;z-index:999;width:71px; cursor:pointer; display:none;}
*html #totop{position:absolute;cursor:pointer;left:20px; display:none;top:expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight)-112+"px")}
#totop a{display:block;width:71px;height:72px;padding-top:48px;background:url(../userimage/toTop.gif) no-repeat;text-align:center;color:#888}
#totop a.cur{background-position:-88px 0;text-decoration:none;color:#ff0000}