摘要： CSS代码.to_top a,.to_top a:hover{ background:url(../images/gotop1_03.gif) no-repeat;}.to_top a{ background-position:0 0;float:left;height:83px;overflow:hidden;width:25px;position:fixed;bottom:35px;cursor:pointer;right:20px; _position:absolute; _right:auto; _left:expression(eval(document.do... 阅读全文