title: Setting an <li class="active"> using MasterPage
body: <p>Code below I have located under my MasterPage. Once one of the tabs get clicked for example "Contact Us" I would like to set the <em>li class</em> to active. I cannot figure out how to do this. Any help would be great.      </p>
  
  <pre><code>&lt;div id="navcontainer"&gt;
      &lt;div class="section-wrapper"&gt;
          &lt;ul class="links"&gt;      
              &lt;li class=""&gt;                
                  &lt;a href=""&gt;Our Company&lt;/a&gt;
              &lt;/li&gt;       
              &lt;li class=""&gt;               
                      &lt;a href="Contact%20Us/Default.aspx"&gt;Contact Us&lt;/a&gt;
              &lt;/li&gt;       
              &lt;li class=""&gt;                
                      &lt;a href=""&gt;Tab 3&lt;/a&gt;
              &lt;/li&gt;       
              &lt;li class=""&gt;                
                      &lt;a href=""&gt;Tab 4&lt;/a&gt;
              &lt;/li&gt;   
              &lt;li class=""&gt;                
                      &lt;a href=""&gt;Tab 5&lt;/a&gt;
              &lt;/li&gt;               
          &lt;/ul&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>