<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: none;
position: absolute;
top: 0%;
left: 0%;
100%;
height: 100%;
background-color: black;
z-index: 1001;
-moz-opacity: 0.7;
opacity: .70;
filter: alpha(opacity=70);
}
#show {
display: none;
position: absolute;
top: 25%;
left: 22%;
53%;
height: 49%;
padding: 8px;
border: 8px solid #E8E9F7;
background-color: white;
z-index: 1002;
overflow: auto;
}
</style>
</head>
<body>
<input id="btnshow" type="button" value="Show" onclick="showdiv();" />
<div id="bg" onclick="hidediv();"></div>
<div id="show">测试
<input id="btnclose" type="button" value="Close" onclick="hidediv();" />
</div>
</body>
</html>