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如何让一个层关闭之后，就算刷新页面了也不显示。除非关闭页面再次打开

2009-05-21 21:31 369 查看
<script type="text/javascript"><!--
google_ad_client = "pub-4490194096475053";
/* 内容页,300x250,第一屏 */
google_ad_slot = "3685991503";
google_ad_width = 300;
google_ad_height = 250;
// --></script>
<script src="http://pagead2.googlesyndication.com/pagead/show_ads.js" type="text/javascript"></script>

<script src="http://pagead2.googlesyndication.com/pagead/show_ads.js" type="text/javascript"></script>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>一个层关闭之后，就算刷新页面了也不显示。除非关闭页面再次打开</title>
<style type="text/css">
#myDiv{
border:1px solid red;
background:#cccccc;
width:100px;
height:100px;
}
#mySpan{
cursor:pointer;
}
</style>
<script language="JavaScript" type="text/javascript">
function closeDiv(){
document.getElementById("myDiv").style.display = "none";
document.cookie = "isClose";
}
window.onload = function(){
var arrStr = document.cookie;
if(arrStr.indexOf("isClose") > -1){
closeDiv();
}
}
</script>
</head>
<body>

<div id="myDiv"><span onclick="closeDiv()" id="mySpan">关闭</span></div>
</body>
</html>
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