/* ÀÁÈËͼ¿â ËѼ¯ÕûÀí www.lanrentuku.com */
.weixin{position:fixed;;right:0;bottom:0;
_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))); 
}
*html{   
background-image:url(about:blank);  
background-attachment:fixed;   
}  
.weixin .xixi{display:none}
.weixin:hover .xixi{position:absolute;display:block;right:50px;bottom:0;z-index:9}