title: highlight currently selected link in css menu bar
body: <p>I have a page with this URL: <a href="http://localhost:8000/progress/c/?l=1&amp;c=1" rel="nofollow">http://localhost:8000/progress/c/?l=1&amp;c=1</a></p>
  
  <p>And the below content to work as a simple css menu bar.</p>
  
  <pre><code>&lt;div class="menu_div"&gt;
      &lt;ul&gt;
          &lt;li&gt;&lt;a href="/progress/c/?l=1&amp;c=1"&gt; l1c1 &lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href="/progress/c/?l=2&amp;c=1"&gt; l1c1 &lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href="/progress/c/?l=3&amp;c=1"&gt; l1c1 &lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href="/progress/c/?l=4&amp;c=1"&gt; l1c1 &lt;/a&gt;&lt;/li&gt;
      &lt;/ul&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>CSS styling is </p>
  
  <pre><code>.menu_div ul
  {
      padding:6px;
      margin:0px;
      font-size:12px;
      list-style:none;
      text-indent:15px;
  
  }
  .menu_div ul li
  {
      line-height:28px;
      border-bottom:1px solid #000;
  }
  .menu_div ul li a
  {
      text-decoration:none;
      font-color:#3A332D;
      display:block;
  }
  .menu_div ul li a:hover
  {
      background:blue;
  }
  .menu_div ul li#active
  {
      background:blue;
  }
  </code></pre>
  
  <p>When I hover over the links the background color changes but the currently selected menu link is not highlighted in blue.</p>
  
  <p>I'm using django framework.</p>