*{padding:0px;margin:0px;}*html{background-image:url(about:blank);background-attachment:fixed;}#tbox{width:54px;float:left;position:fixed;left:50px;bottom:15px;_position:absolute;_bottom:auto;_top:expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight-this.offsetHeight-(parseInt(this.currentStyle.marginTop,10)||0)-(parseInt(this.currentStyle.marginBottom,10)||0)));_margin-bottom:15px;}#pinglun,#xiangguan,#gotop{width:54px;height:56px;background:url(../images/icon.png) no-repeat;display:block;}#pinglun{background-position:0 0;}#xiangguan{background-position:0 -59px;}#gotop{background-position:0 -118px;}