JavaScript实现的简洁圆角二级导航菜单

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  <ul> 
   <li id="tb_1" onmouseover="HoverLi(1);"><a href="#"><span>ASP</span></a></li> 
   <li id="tb_2" onmouseover="HoverLi(2);"><a href="#"><span>PHP</span></a></li> 
   <li id="tb_3" onmouseover="HoverLi(3);"><a href="#"><span>.NET</span></a></li> 
   <li id="tb_4" onmouseover="HoverLi(4);"><a href="#"><span>JSP</span></a></li> 
   <li id="tb_5" onmouseover="HoverLi(5);"><a href="#"><span>JAVA</span></a></li> 
   <li id="tb_6" onmouseover="HoverLi(6);"><a href="#"><span>DELPHI</span></a></li> 
   <li id="tb_7" onmouseover="HoverLi(7);"><a href="#"><span>VC++</span></a></li> 
   <li id="tb_8" onmouseover="HoverLi(8);"><a href="#"><span>AJAX</span></a></li> 
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  <div class="dis" id="tbc_01">ASP的内容一</div> 
  <div class="undis" id="tbc_02">PHP的内容二</div> 
  <div class="undis" id="tbc_03">.NET的内容三</div> 
  <div class="undis" id="tbc_04">JSP的内容四</div> 
  <div class="undis" id="tbc_05">JAVA的内容五</div> 
  <div class="undis" id="tbc_06">DELPHI的内容六</div> 
  <div class="undis" id="tbc_07">VC++的内容七</div> 
  <div class="undis" id="tbc_08">AJAX的内容</div> 
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