jQuery事件控制点击内容下拉

1、设计实例
<!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事件</title>
<script type="text/javascript" src="jquery-1.8.0.js"></script>
<style type="text/css">
    body{
		font-family:微软雅黑;
		font-size:12px;
		font-stretch:normal;
		background-color:!important;
		400px;
		height:auto;
	}
   .total{
	   border:#00FF00 solid 1px;
	   font-size:12px;
   }
   .module{
	   padding:6px;
	   font-size:14px;
	   font-weight:bolder;
	   background-color:#FC6;
   }
   .content{
	   padding:8px;
	   font-size:12px;
	   font-family:微软雅黑;
	   text-align:center;
	   display:none;
   }
   .open{
	   background-color:#0000FF;
   }
</style>
<script type="text/javascript">
     $(function(){
	       $(".content").html("你好，世界真美好！");
		   $(".module").click(function(){
				$(this).addClass("open").next(".content").css("display","block"); 
				$(this).css("color","#FFFFF");  
		   });	 
	 });
</script>
</head>

<body>
   <div class="total">
        <div class="module">模块</div>
        <div class="content"></div>
   </div>
</body>
</html>
2、实例结果
（1）初始化
（2）点击“模块”