IE6支持position:fixed完美解决方法

<!-- pliance patch for microsoft browsers -->
<!--[if lt IE 7]><link rel="stylesheet" href="ie-stuff.css" type="text/css" media="screen"/><![endif]-->

#footer {
position: absolute;
bottom: auto;
clear: both;
:e­xpression(eval(document.patMode &&
document.patMode=='CSS1Compat') ?
documentElement.scrollTop
+(documentElement.clientHeight-this.clientHeight) - 1
: document.body.scrollTop
+(document.body.clientHeight-this.clientHeight) - 1);
}