兼容ie中fixed

 

.publish{
    width:27px;
    height:131px;
    background:url(publish.png) no-repeat;
    cursor:pointer;
    position:fixed;
    top:180px;
    right:0;
    _position:absolute;
     _top:expression(eval(document.documentElement.scrollTop+180));
    _right:0;
}