.liu-feedback{position:fixed;top:10%;width:33px;height:89px;overflow:hidden;z-index:1000;}
.liu-feedback a{background:#000;color:#fff;display:block;width:33px;height:89px;padding:0;margin:0;opacity:0.50;filter:alpha(opacity=50);}
.liu-feedback a:hover{opacity:1.0;filter:alpha(opacity=100);}
.liu-feedback a span{position:absolute;left:-9999em;top:0;}
.liu-feedback.edge-right{right:0;}