     }
     
     /**
+     *  @private 
      *  Set this scrollbar's maximum to the viewport's contentWidth 
      *  less the viewport width. 
-     *
-     *  @see IViewport#contentWidth
-     *  @see IViewport#width 
-     *  
-     *  @langversion 3.0
-     *  @playerversion Flash 10
-     *  @playerversion AIR 1.5
-     *  @productversion Flex 4
      */
     override mx_internal function viewportContentWidthChangeHandler(event:PropertyChangeEvent):void
     {

    } 
    
    /**
     *  Set this scrollbar's maximum to the viewport's contentWidth 
     *  less the viewport width and its pageSize to the viewport's width. 
     *  
     *  @langversion 3.0
     *  @playerversion Flash 10
     *  @playerversion AIR 1.5
     *  @productversion Flex 4
     */
    override mx_internal function viewportResizeHandler(event:ResizeEvent):void
    {

    }
    
    /**
     *  @private 
     *  Set this scrollbar's value to the viewport's current horizontalScrollPosition.
     */
    override mx_internal function viewportHorizontalScrollPositionChangeHandler(event:PropertyChangeEvent):void
    {
