     }
 
     /**
-     * @private
-     * Stop scrolling the track if the mouse leaves the stage
-     * area. Remove the listeners and stop the Timer.
+     *  @private
+     *  Stop scrolling the track if the mouse leaves the stage
+     *  area. Remove the listeners and stop the Timer.
      */
     private function track_mouseLeaveHandler(event:Event):void
     {
         trackScrolling = false;
         removeSystemHandlers(MouseEvent.MOUSE_MOVE, track_mouseMoveHandler,
                 stage_track_mouseMoveHandler);
-        systemManager.removeEventListener(
-            MouseEvent.MOUSE_UP, track_mouseLeaveHandler, true);
+        systemManager.removeEventListener(MouseEvent.MOUSE_UP,
+                track_mouseLeaveHandler, true);
         systemManager.stage.removeEventListener(Event.MOUSE_LEAVE, 
                             track_mouseLeaveHandler);
 

    }

    /**
     * @private
     * If we are still in the middle of track-scrolling, restart the
     * timer when the mouse re-enters the track area.
     */
    private function track_rollOverHandler(event:MouseEvent):void
    {

    [SkinPart(required="false")]
    
    /**
     *  <code>decrementButton</code> is an optional SkinPart that defines a button 
     *  that, when pressed, will step the scrollbar "up", which is equivalent 
     *  to a decreasing step in the <code>value</code> property.
     */
    public var decrementButton:Button;
    
    [SkinPart(required="false")]
    
    /**
     *  <code>incrementButton</code> is an optional SkinPart that defines a button 
     *  that, when pressed, will step the scrollbar "down", which is equivalent
     *  to a increasing step in the <code>value</code> property.
     */
    public var incrementButton:Button;
    
    //--------------------------------------------------------------------------
    //
    //  Variables
    //
    //--------------------------------------------------------------------------

    // TODO: transient?    
    // Direction indicator for current track-scrolling operations
