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jquery 實現的彈窗

<!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>無標題文件</title>
<script type="text/javascript" src="js/jquery.min.js"></script>
</head>
<script>
$(function(){
$("#denglu").click(function(){
$(".inner").fadeIn(500);
$(".out").fadeIn(300);
});
$("#close").click(function(){
$(".out").fadeOut(200);
$(".inner").slideUp(300);
});
})
</script>
<style type="text/css">
*{ margin:0; padding:0;}
.out{ position:absolute;background-color:#666;z-index:9998; opacity:0.3; width:100%;height:100%; display:none; top:0px;}
.inner{ position:absolute; margin:-150px auto auto -225px; width:450px; height:300px; top:50%;left:50%; z-index:9999; border:6px solid #FFF;opacity:1; color:#000; display:none; border-radius:5px; box-shadow:0 0 6px #09F; background-color:#D8DCFA;}
#denglu,#close{ cursor:pointer;}
.close{background:url(images/2014-09-01_182325.jpg) no-repeat;height:21px;width:23px; display:block; float:right;}
.close:hover{ background-image:url(images/2014-09-01_185420.jpg);}
</style>
<body>
<div><p><a id="denglu" class="denglu">登入</a></p></div>
<div class="inner">
<a id="close" class="close"></a>
</div>
<div class="out">
</div>
</body>
</html>