title: Render div over existing div
body: <p>I have this code which simulates what is going on in my code:</p>
  
  <p><a href="http://jsfiddle.net/xrLLaqs6/" rel="nofollow">Fiddle</a></p>
  
  <pre><code>&lt;table style="width:100%" id="tableID"&gt;
      &lt;tr&gt;
          &lt;td&gt;Jill&lt;/td&gt;
          &lt;td&gt;Smith&lt;/td&gt;
          &lt;td&gt;50&lt;/td&gt;
      &lt;/tr&gt;
      &lt;tr&gt;
          &lt;td&gt;Eve&lt;/td&gt;
          &lt;td&gt;Jackson&lt;/td&gt;
          &lt;td&gt;94&lt;/td&gt;
      &lt;/tr&gt;
  &lt;/table&gt;
  &lt;button type="button" onclick="show('#tableID')"&gt;Click Me!&lt;/button&gt;
  
  &lt;script type="text/javascript"&gt;
      function show(id) {
          $(id).html('&lt;p class="pleaseWait"&gt;Please Wait&lt;/p&gt;');
      }
  &lt;/script&gt;
  </code></pre>
  
  <p>When a user clicks the button, a request is sent off somewhere and when the reply comes back, the table is updated.</p>
  
  <p>In the meantime, a "Please Wait" message is displayed instead of the table.</p>
  
  <p>I would like the "loading" div to appear over the existing table instead of replacing it. </p>
  
  <p>I thought the best way to go about this would be to add a css class to the existing element (<code>tableID</code> in this case) to dim it but I'm not sure how to render another div (the "Please Wait" message) over it.</p>
  
  <p>Any ideas would be appreciated!</p>