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jquery弹出层

 
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<!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=utf-8" />

<title>jquery弹出层实例</title>

<script type="text/javascript" src="js/jquery-1.4.4.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>
 

 

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