IE6 fixed BUG解决办法

/* 修正IE6振动bug */
* html,* html body{
	background-image:url(about:blank);
	background-attachment:fixed;
}
/* IE6 头部固定 */
* html .fixed-top{
	position:absolute;
	bottom:auto;
	top:expression(eval(document.documentElement.scrollTop));
}
/* IE6 右侧固定 */ 
* html .fixed-right{
	position:absolute;
	right:auto;
	left:expression(eval(document.documentElement.scrollLeft+document.documentElement.clientWidth-this.offsetWidth)-(parseInt(this.currentStyle.marginLeft,10)||0)-(parseInt(this.currentStyle.marginRight,10)||0));
}
/* IE6 底部固定  */
* html .fixed-bottom{
	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)));
}
/* IE6 左侧固定 */
* html .fixed-left{
	position:absolute;
	right:auto;
	left:expression(eval(document.documentElement.scrollLeft));
}