      *  @param event The MouseEvent object.
      *  
      *  @langversion 3.0
-     *  @playerversion Flash 9
-     *  @playerversion AIR 1.1
-     *  @productversion Flex 3
+     *  @playerversion Flash 10
+     *  @playerversion AIR 1.5
+     *  @productversion Flex 4
      */
     protected function mouseMoveHandler(event:MouseEvent):void
     {

        
        // Hide the drop indicator
        layout.hideDropIndicator();
        
        // Hide focus
        drawFocus(false);

     *  @param event The MouseEvent object.
     *  
     *  @langversion 3.0
     *  @playerversion Flash 10
     *  @playerversion AIR 1.5
     *  @productversion Flex 4
     */
    protected function item_mouseDownHandler(event:MouseEvent):void
    {
