title: jQuery mobile cannot refresh the collapsibleset
body: <p>I am creating an application using jQuery mobile and loading its menu and pages form wordpress throw jsonp.
  I am loding its menu in the form of collapsibleset and listview but i keep on getting errors.
  when I try to refresh the collapsibleset by this code </p>
  
  <pre><code>$(".childnev").html(list);
  $.mobile.loading( 'hide');
  $('.popupmenu').slideToggle('slow');
  
  $(".childnev").collapsibleset('refresh');
  
  $(".childsublist").listview().listview('refresh');
  </code></pre>
  
  <p>It gives me this error </p>
  
  <pre><code>Error: cannot call methods on collapsibleset prior to initialization;
  attempted to call method 'refresh'
  </code></pre>
  
  <p>And when i try to refresh by this code.</p>
  
  <pre><code>$(".childnev").html(list);
  $.mobile.loading( 'hide');
  $('.popupmenu').slideToggle('slow');
  
  $(".childnev").collapsibleset();
  $(".childnev").collapsibleset('refresh');
  
  $(".childsublist").listview().listview('refresh');
  </code></pre>
  
  <p>It again gives me this error </p>
  
  <pre><code>TypeError: o[0] is undefined
  </code></pre>
  
  <p>Am I missing something or doing something wrong? </p>