请教WEB

Question

  <li><a href="http://www.consideropen.com"
title="Services">Services</a>
<ul>
<li><a
href="http://www.consideropen.com/seattle/web-design-services/design/"
title="Web Design and Graphic Design">Web Design and Graphic
Design</a></li>
<li><a
href="http://www.consideropen.com/seattle/web-design-services/web-development/"
title="Web Development">Web Development</a></li>
<li><a
href="http://www.consideropen.com/seattle/web-design-services/eting/"
title="Internet Marketing">Internet Marketing</a></li>
</ul> </li>
<li><a
href="http://www.consideropen.com/seattle/about/" title="About us">About
us</a></li>如上面代码，Services点下拉还有4个元素，About us没有，现在鼠标点上去Services变成粗体，About us则不变，因为About us下面没有其他超链接了。
请问怎么用代码判别。刚学，表达可能有问题，请各位专家教教我

Answer 1

<li><a href="http://www.consideropen.com"
title="Services">Services</a>
<ul>
<li><a
href="http://www.consideropen.com/seattle/web-design-services/design/"
title="Web Design and Graphic Design">Web Design and Graphic
Design</a></li>
<li><a
href="http://www.consideropen.com/seattle/web-design-services/web-development/"
title="Web Development">Web Development</a></li>
<li><a
href="http://www.consideropen.com/seattle/web-design-services/eting/"
title="Internet Marketing">Internet Marketing</a></li>
</ul></li><li><a
href="http://www.consideropen.com/seattle/about/" title="About us">About
us</a>
<ul>
<li><a
href="http://www.consideropen.com/seattle/web-design-services/design/"
title="Web Design and Graphic Design">Web Design and Graphic
Design</a></li>
<li><a
href="http://www.consideropen.com/seattle/web-design-services/web-development/"
title="Web Development">Web Development</a></li>
<li><a
href="http://www.consideropen.com/seattle/web-design-services/eting/"
title="Internet Marketing">Internet Marketing</a></li>
</ul></li>就这样啊希望对你有帮助