title: jQUERY get the parent folder of url
body: <p>I want to use Ajax to load an <code>xml</code> file. This file is located into another folder of the root directory.</p>
  
  <ol>
  <li>How do I get the root directory path with <code>jQuery</code>?</li>
  <li>How do I move to the parent directory of the current path with <code>jQuery</code>?</li>
  </ol>