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<title></title>
<style type="text/css">
*
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width: 100px;
background-color: Gray;
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</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<ul>
<li onmousemove="mouse_over(1010)" onmouseout="mouse_out(1010)"><a href="">.NET精华区</a>
<div class="subSheet dis_none" id="1010">
<ul>
<li><a href="">新手入门</a></li>
<li><a href="">托管代码</a></li>
<li><a href="">非托管代码</a></li>
</ul>
</div>
</li>
<li onmousemove="mouse_over(1011)" onmouseout="mouse_out(1011)"><a href="">嵌入式</a>
<div class="subSheet dis_none" id="1011">
<ul>
<li><a href="">新手入门</a></li>
<li><a href="">嵌入式入门</a></li>
<li><a href="">嵌入式进阶</a></li>
</ul>
</div>
</li>
<li onmousemove="mouse_over(1012)" onmouseout="mouse_out(1012)"><a href="">单片机</a>
<div class="subSheet dis_none" id="1012">
<ul>
<li><a href="">新手入门</a></li>
<li><a href="">单片机入门</a></li>
<li><a href="">单片机进阶</a></li>
</ul>
</div>
</li>
<li><a href="">软件测试</a></li>
</ul>
</div>
</form>
</body>
</html>
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<script type="text/javascript">
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