     public function set minScrollPosition(value:Number):void
     {
         _minScrollPosition = value;
+        invalidateDisplayList();
     }
 
     //----------------------------------

     *  @param minScrollPosition Number which represents the bottom of the 
     *  scrolling range.
     *
     *  @param maxScrollPosition Number which represetns the top of the 
     *  scrolling range.
     *
     *  @param pageScrollSize Number which represents the increment to move when 

    public function set maxScrollPosition(value:Number):void
    {
        _maxScrollPosition = value;
        invalidateDisplayList();
    }

    //----------------------------------
