title: Ajax: Add new <div> from JSON with jQuery
body: <p>In a page I have this HTML code: <br>
  <pre> <code>
  &lt;div id="content"&gt;
      &lt;div class="container"&gt;
          &lt;div class="author"&gt;@Francesc&lt;/div&gt;
          &lt;div class="message">Hey World!&lt;/div>
          &lt;div class="time">13/06/2010 11:53 GMT&lt;/div>
      &lt;/div&gt;
      &lt;div class="container"&gt;
          &lt;div class="author"&gt;@SomeOtherUser&lt;/div&gt;
          &lt;div class="message">Bye World!&lt;/div>
          &lt;div class="time">13/06/2010 14:53 GMT&lt;/div>
      &lt;/div&gt;
      &lt;div class="container"&gt;
          &lt;div class="author"&gt;@Me&lt;/div&gt;
          &lt;div class="message">Hey World!&lt;/div>
          &lt;div class="time">13/06/2010 18:53 GMT&lt;/div>
      &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  I want to ask, how to get a JSON file, from the server that has more recent messages and put them to the top, I mean above the first <code>&lt;div class="container"&gt;</code>.</p>
  
  <p>Another question, it's possible to pass with GET when submiting the request to the server, the time  of last update? How can I do it?<br>
  Thanks.</p>