             Math.round(minSlopInches * Capabilities.screenDPI), 
             dragEventThinning ? MAX_DRAG_RATE : NaN);
     }
-        
+    	
     /**
      *  @private
      */

            viewport.clipAndEnableScrolling = true;
            Group(skin).addElementAt(viewport, 0);
            viewport.addEventListener(PropertyChangeEvent.PROPERTY_CHANGE, viewport_propertyChangeHandler);
            viewport.addEventListener(Event.RESIZE, viewport_resizeHandler);
        }
        if (verticalScrollBar)
            verticalScrollBar.viewport = viewport;

     *  <code>horizontalScrollBar</code> skin part to that instance.
     * 
     *  This property should be considered read-only. It is only
     *  set by the Scroller's skin.
     *  To access the HScrollBar instance, use <code>horizontalScrollBar</code>.
     */
    public var horizontalScrollBarFactory:IFactory;
