.weixin{width:37px; height:37px; background:url(../images/x_ico.png) no-repeat; bottom:183px; _margin-bottom:183px; position:fixed; right:50px; cursor:pointer; _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)));z-index:299;}
.weixin_img{
	width:276px;
	height:300px;
	background:url(../images/erweima.png) no-repeat; 
	position:fixed; 
	right:10px; 
	bottom:10px; 
	z-index:9999; 
	/* display:none;  */
	_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:67px;
	z-index:299;}