title: Show loading image while $.ajax is performed
body: <p>I am just wondering how to show an image that indicates that the async request is running. I use the following code to perform a async request:</p>
  
  <pre><code>$.ajax({
    url: uri,
    cache: false,
    success: function(html){
      $('.info').append(html);
    }
  });
  </code></pre>
  
  <p>Any ideas?</p>