<!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>
<title>DIV CSS遮罩层</title>
<script language="javascript" type="text/javascript">
function showdiv() {
document.getElementById("bg").style.display ="block";
document.getElementById("show").style.display ="block";
}
function hidediv() {
document.getElementById("bg").style.display ='none';
document.getElementById("show").style.display ='none';
}
</script>
<style type="text/css">
#bg{ display:block; position: absolute; top: 0%; left: 0%; width: 100%; height: 100%; background-color: black; z-index:1001; -moz-opacity: 0.7; opacity:.70; filter: alpha(opacity=70);}
#show{display:block; position: absolute; top: 25%; left: 22%; width: 53%; height: 49%; padding: 8px; border: 8px solid #E8E9F7; background-color: white; z-index:1002; overflow: auto;}
</style>
</head>
<body>
<div id="bg"></div>
<div id="show">
<input id="btnclose" type="button" value="关闭×" onclick="hidediv();"/>
</div>
</body>
</html>
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