title: How can I implement the multi-level list in drupal7 with theme_item_list()?
body: <p>Im using drupal 7, I would like to know whether i can use the function theme_item_list() to implement multi-level list items. As below:</p>
  
  <li>Item 1<ul>test<li>Item 1.1</li><li>Item 1.2</li><li>Item 1.3</li></ul></li>
  <li>Item 2<ul><li>Item 2.1</li><li>Item 2.2</li><li>Item 2.3<ul><li>Item 2.3.1</li><li>Item 2.3.2</li><li>Item 2.3.3</li></ul></li></ul></li><li>Item 3</li>
  
  <p>If possible can anybody help me with an example.</p>