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jquery弹出框-锁屏幕

  作者：会飞的

<!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=&q

<!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=gb2312" />

<title>tes</title>

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.0/jquery.min.js"></script>

<style>

/*弹出层*/

#box_bg{width:100%; background:#CCCCCC; position:absolute; top:0%; left:0%; z-index:10; display:none;}

#login{width:330px; position:absolute; left:50%;top:50%;margin-left:-165px; z-index:200;border:10px solid #ccd8dd;padding:20px;background:#fff;position:relative;font-size:14px;zoom:1;}

</style>

<script type="text/javascript">

$(document).ready(function(){

$("#ceng").click(function(){

var h = $(document).height();

var h1 = $(document).scrollTop();

var h2 = $('#login').css('margin-top');

h2 = parseFloat(h2);

$('#box_bg').css({display:'block',opacity:0.5,height:h+'px'});

$('#login').css({display:'block'});

$('#login').css({display:'block',marginTop:(h2+h1)+'px'});

});

$("#close_login").click(function(){

   $("#login").hide();

   $("#box_bg").hide();

   $("#login").css({marginTop:'px'});

});

});

</script>

</head>

<body>

<span id="ceng">点击这里弹出层</span> 

<br/>这是个有趣的测试

<div class="wrap" id="login" style="display:none;">

<div class="float_div" style="width:330px;">

        <center id="close_login">点击关闭。</center>               

    </div>

</div>

<div id="box_bg"></div>

</body>


</html>


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