*{padding:0px;margin:0px;}
*html{background-image:url(about:blank);background-attachment:fixed;}
#tbox{position:fixed;width:50px;height:150px
_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,#weix{width:50px;height:50px;display:block;background-image: url(../img/top.png);background-repeat: no-repeat;margin-bottom: 3px;border-radius: 2px;}
#pinglun{background-position:0 -100px;}
#xiangguan{background-position:0 -50px;}
#weix{background-position:0 -150px;}
#gotop{background-position:0 0px;}
#signin_menu{display:none;position:absolute;width:209px;height:209px;z-index:100;text-align:left;bottom: 3px;right: 52px;margin-right: 0px;
*margin-right: -1px;}

@media screen and (max-width: 720px){#tbox{width:30px;}#pinglun,#xiangguan,#gotop,#weix{width:30px;height:30px;background-image: url(../img/sj-top.png);}#pinglun{background-position:0 -60px;}#xiangguan{background-position:0 -30px;}#weix{background-position:0 -90px;}#signin_menu{right: 32px;}}