右下角弹出信息（自动关闭）

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<title>右下角弹出框</title> 
</head> 
<style type="text/css"> 
#rbbox{position:absolute;right:0;bottom:0;width:300px;height:0px;overflow:hidden} 
.button{display:inline;float:right;font-size:12px;cursor:pointer} 
</style> 
<body><div id="rbbox">关闭<iframe 
src="http://www.gxlcms.com/404.htm" frameborder="0" height="200" width="300" 
scrolling="no"></iframe></div> 
<script language="javascript" type="text/javascript"> 
window.onload=function(){showBox();setTimeout("closeBox()",5000)} 
function showBox(o){ 
if (o==undefined) o=document.getElementById("rbbox"); 
o.style.height=o.clientHeight+2+"px"; 
if (o.clientHeight<200) setTimeout(function(){showBox(o)},5); 
} 
function closeBox(){document.getElementById("rbbox").style.display="none";} 
</ script> 
</body> 
</html>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

右下角弹出信息（自动关闭）_广告代码