title: jQuery UI Multiselect widget clear all check boxes
body: <p>Hopefully a quick one...</p>
  
  <p>I need to fire the uncheckAll event in the click event of a separate button on my page, I have tried the following:</p>
  
  <pre><code>$('.masterProviderOrgsListBox').multiselect().uncheckAll();
  </code></pre>
  
  <p>but this isnt a recognised method. I basically want to fire the same method that is fired when you click the "Uncheck All" box in the header.</p>
  
  <p>I was previously doing this:</p>
  
  <pre><code>$('.masterProviderOrgsListBox option:selected').removeAttr("selected");
  </code></pre>
  
  <p>but this removes the selections on the actual multiselect rather than the jQuery UI widget.</p>
  
  <p>Couldnt find anything in the documentation, any ideas?</p>