<!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=gbk" />
<title>jquery弹出层实例</title>
<script type="text/javascript" src="http://www.liehuo.net/uploads/Common/js/jquery-1.4.2.min.js"></script>
<script type="text/javascript">
$(function()
{
$("#btnShow").click(function()
{
var str="我是弹出对话框";
$(".form").html(str);
$("#BgDiv").css({ display:"block",height:$(document).height()});
var yscroll=document.documentElement.scrollTop;
$("#DialogDiv").css("top","100px");
$("#DialogDiv").css("display","block");
document.documentElement.scrollTop=0;
});
$("#btnClose").click(function()
{
$("#BgDiv").css("display","none");
$("#DialogDiv").css("display","none");
});
});
</script>
<style type="text/css">
body,h2{margin:0 ; padding:0;}
#BgDiv{background-color:#e3e3e3; position:absolute; z-index:99; left:0; top:0; display:none; width:100%; height:1000px;opacity:0.5;filter: alpha(opacity=50);-moz-opacity: 0.5;}
#DialogDiv{position:absolute;width:400px; left:50%; top:50%; margin-left:-200px; height:auto; z-index:100;background-color:#fff; border:1px #8FA4F5 solid; padding:1px;}
#DialogDiv h2{ height:25px; font-size:14px; background-color:#8FA4F5; position:relative; padding-left:10px; line-height:25px;}
#DialogDiv h2 a{position:absolute; right:5px; font-size:12px; color:#000000}
#DialogDiv .form{padding:10px;}
</style>
</head>
<body >
<div id="BgDiv"></div>
<div id="DialogDiv" style="display:none">
<h2>弹出层<a href="#" id="btnClose">关闭</a></h2>
<div class="form">
我是弹出对话框！！
</div>
</div>
<p> </p>
<p align="center">
<input value="弹出" class="but" type="button" id="btnShow" />
</p>
</body>
</html> <br /><center>如不能显示效果，请按Ctrl+F5刷新本页，更多网页代码：<a href='http://www.liehuo.net/' target='_blank'>http://www.liehuo.net/</a></center>