title: Call parent function from an itemRenderer
body: <p>I want to call the parent function called "edit_groups()" from the itemRenderer. 
  The code for my itemRenderer is:</p>
  
  <pre><code>&lt;mx:VBox id="vbx_container" paddingBottom="4" paddingLeft="4" paddingRight="4" paddingTop="4" borderStyle="solid"
      dropShadowEnabled="true" width="100%" height="100%" horizontalScrollPolicy="off" verticalScrollPolicy="off" &gt;
      &lt;mx:Canvas width="100%" height="100%" horizontalScrollPolicy="off" verticalScrollPolicy="off" &gt;
          &lt;mx:Image id="image" width="100" height="100" source="{data.thumb}" scaleContent="true" maintainAspectRatio="true"
              complete="{image_smoothing_handler(event);}" trustContent="true" doubleClick="{CALL THE PARENT FUNCTION "edit_groups()"}"/&gt;
      &lt;/mx:Canvas&gt;
  &lt;/mx:VBox&gt;
  </code></pre>
  
  <p>And I call my itemRenderer from an application like:   </p>
  
  <pre><code>list_groups_modify.itemRenderer=new ClassFactory(groups.list_groups_modify_item_renderer);
  
  &lt;mx:Label text="{data.label}" textAlign="center" maxWidth="60" toolTip="{data.label}"/&gt;
  </code></pre>
  
  <p>Regards
  Zeeshan</p>