#toTop{display:none;text-decoration:none;position:fixed;bottom:10px;right:10px;border-radius:6px;overflow:hidden;width:51px;height:51px;border:1px solid #fff;background:#000 url(../images/back-to-top.png)center center no-repeat;}
#toTopHover{background:#000 url(../images/back-to-top.png)center center no-repeat;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;}