cssでの演算
298 ワード
.mycss{
position:fixed;
bottom:10px;
margin-left:7px;
_position:absolute;
_top:expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight - 120));
width:22px;
height:59px;
background:url(images/backtop.gif) no-repeat;
cursor:pointer;
}