#toTop {display:none;text-decoration:none;position:fixed;bottom:10px;left:10px;overflow:hidden;width:51px;height:51px;border:none;text-indent:-999px;background:url(ui.totop.png) no-repeat left top;}

#toTopHover {background:url(ui.totop.png) no-repeat left -51px;width:51px;height:51px;display:block;overflow:hidden;float:left;opacity: 0;-moz-opacity: 0;filter:alpha(opacity=0);}

#toTop:active, #toTop:focus {outline:none;}