这是一个多层级弹出窗口插件（Multilayer popup plugin => mPopup）,可以使用在项目中需要弹出多层窗口的情形。
基本使用方法：
$.mPopup('Hello word!!!');结合HTML
<body>
<a id="open1" href="javascript:void(0);">Click here to pop up Box 1</a><br />
<a class="open2" href="javascript:void(0);">Click here to pop up Box 2</a>
<div class="box hidden" id="box1">
<p>
I am box 1.
</p>
<a class="open2" href="javascript:void(0);">Click me to open box 2!</a>
</div>
<div class="box none" id="box2">
<p>
Hi, I am box 2.<br />
If you open me from Box 1, I will in front of box 1.
</p>
<a class="close" href="javascript:void(0);">Click here to close me</a>
</div>
</body>
<script type="text/javascript">
$(document).ready(function(){
var box1 = $('#box1');
$('#open1').click(function(){
$.mPopup(box1,{
padding: 0
});
});
$('.open2').click(function(){
$.mPopup($('#box2'),{
padding: 0,
closeClass: ['close']
});
});
});
</script>示例代码请下载：完整mPopup项目