             var trackPos:Number = track ? track.y : 0;
             var layoutItem:ILayoutItem = LayoutItemFactory.getLayoutItemFor(thumb);
             layoutItem.setActualPosition(layoutItem.actualPosition.x,
-            					    	 Math.round(trackPos + thumbPos));
+                                         Math.round(trackPos + thumbPos));
         }
     }
 

    }
    
    /**
     *  If viewport is non null then ask it to compute the verical
     *  scroll position delta for step up/down.  The delta is added
     *  to this scrollbar's value.  
     * 
     *  @see viewport
     *  @see #setValue
     *  @see IViewport#verticalScrollPositionDelta
     */
    override public function step(increase:Boolean = true):void
    {

import flash.ui.Keyboard;
import mx.layout.ILayoutItem;
import mx.layout.LayoutItemFactory;
import mx.components.baseClasses.FxScrollBar;   

/**
 *  The FxVScrollBar (vertical ScrollBar) control lets you control
 *  the portion of data that is displayed when there is too much data
 *  to fit vertically in a display area.
 * 
 *  <p>Although you can use the FxVScrollBar control as a stand-alone control,
 *  you usually combine it as part of another group of components to
 *  provide scrolling functionality.</p>
 */
