样式:
<style type="text/css">
body{_background-attachment:fixed; _background-image:url(nothing);}
#status-box{width:100px; height:100px; color:#FFF; background-color:black; position:fixed; _position:absolute; bottom:0;_top:expression(documentElement.scrollTop+document.documentElement.clientHeight-100); right:0;}
#cs{background-color:#ccc;width:200px;height:120px;position:absolute;left:100px;top:100px;}
</style>
body:
<body> <div >随页面走动</div> <div style="height:900px;"></div> <div >静态层</div> </body>