title: jquerymobile loading message theme
body: <p>I have a question about the loading message on jQuery Mobile.</p>
  
  <p>By default, the loading message theme is <code>a</code>, according to jQuery Mobile code:  </p>
  
  <pre><code>&lt;div class="ui-loader ui-body-a ui-corner-all" style="top: 204.5px; "&gt;...&lt;/div&gt;
  </code></pre>
  
  <p>I would like to know how I can change the default theme of this div, I can't figure it out.</p>
  
  <p>Thanks in advance.</p>