#toTop{display:none;text-decoration:none;position:fixed;bottom:20px;right:20px;overflow:hidden;width:42px;height:42px;border:none;text-indent:100%;background:url(../image/ui.totop.png) no-repeat left top #d9d9d9}#toTopHover{background:url(../image/ui.totop.png) no-repeat left -42px;width:42px;height:42px;display:block;overflow:hidden;float:left;opacity:0;-moz-opacity:0;filter:alpha(opacity=0)}#toTop:active,#toTop:focus{outline:none}