来自:http://my.oschina.net/u/246503/blog/42330
<!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></title>
<style type="text/css">
#brg
{
width: 100%;
height: 100%;
background: #333;
position: absolute;
top: 0;
left: 0;
filter: alpha(opacity=60);
-moz-opacity: 0.6;
opacity: 0.6;
position: absolute;
top: 0;
left: 0;
display: none;
}
#showdiv
{
width: 100%;
height: auto;
position: absolute;
left: 300px;
top: 150px;
z-index: 330;
display: none;
}
#testdiv
{
width: 800px;
height: auto;
margin: 0 0;
border: 1px solid #4d4d4d;
background: #f2f2f2;
}
#close
{
width: 200px;
height: 27px;
line-height: 27px;
font-size: 14px;
font-weight: bold;
border: 1px solid #4d4d4d;
text-align: center;
cursor: pointer;
margin: 0 auto;
background: #333;
color: #fff;
}
</style>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.0/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
var bheight = document.body.clientHeight;
$("#btnAdd").click(function() {
$("#brg").css("display", "block");
$("#showdiv").css("display", "block");
$("#brg").css("height", document.body.scrollHeight);
$("#showdiv").css("top", document.body.scrollTop + 100);
});
$("#close").click(function() {
$("#brg").css("display", "none");
$("#showdiv").css("display", "none");
});
});
</script>
</head>
<body>
<button id="btnAdd">
button</button>
this is the test
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<!-- 遮罩层DEMO-->
<div id="brg">
</div>
<div id="showdiv">
<div id="close">
关闭
</div>
<div id="testdiv">
要显示的内容
</div>
</div>
<!-- END遮罩层DEMO-->
</body>
</html>