<title>自动关闭的DIV层</title>

<title>自动关闭的DIV层</title>
<script language="javascript">
function timer(){
 var box=document.getElementById("abc");
 box.style.display="none";
}
setTimeout("timer()",6000);//6秒后消失
</script>
<div id="abc" style="background:yellow;padding:20px;position:absolute; left:92px; top:38px; width:200px; height:169px; z-index:1">友情提示：本层5秒后会消失！</div>