title: adding id to a tag in drupal's primary menu
body: <p>i want to add id tags to primary links menu..
  it should look something like this:</p>
  
  <pre><code>&lt;li&gt;&lt;a id="home" href="#"&gt;Home&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;&lt;a id="about" href="#"&gt;About&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;&lt;a id="contact" href="#"&gt;Contact&lt;/a&gt;&lt;/li&gt;
  </code></pre>
  
  <p>currently, it's just</p>
  
  <pre><code>&lt;li&gt;&lt;a href="/test/drupal/content/home"&gt;Home&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;&lt;a href="/test/drupal/content/about"&gt;About&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;&lt;a href="/test/drupal/content/contact"&gt;Contact&lt;/a&gt;&lt;/li&gt;
  </code></pre>
  
  <p>to change the address to "#"  is it ok to use url aliases?</p>
  
  <p>I just want to add attributes to <strong>l()</strong> when it creates the primary menu, thatz it in a nutshell..</p>
  
  <p>any suggestions?
  should i edit any file or create new function to do this job?
  I'm using zen theme(just for an info)
  many thanks..</p>