.go-top{ visibility:hidden;  position:fixed; _position:absolute; bottom:160px; left:50%; width:27px; height:73px; background:url(gotop.gif) no-repeat 0 0;margin-left:500px; margin-bottom:0; text-align:center; font-size:12px; line-height:13px; cursor:pointer; color:#999999;}
.go-top i{ position:relative; _left:2px; display:block; width:12px; margin:0 auto; line-height:16px; height:14px; overflow:hidden;writing-mode:tb-rl;transform: rotate(90deg);-webkit-transform: rotate(90deg);-moz-transform: rotate(90deg);-o-transform: rotate(90deg); font-family:"ËÎÌå"; font-weight:700;}
.go-top a{ text-decoration:none; color:#999999; outline:none;}
.go-top:hover{background-position:-29px 0;}