/*Top按钮*/
*html{background-image:url(about:blank);background-attachment:fixed;}/*解决IE6下滚动抖动的问题*/
.tbox{width:50px;float:right;position:fixed;right:10px;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;display:none;}/*解决IE6下不兼容 position:fixed 的问题*/
.tbox #gotop{width:50px;height:50px;background:url(../images/icon.png) no-repeat 0 0;display:block;}