 import mx.events.FlexEvent;
 import mx.events.ResizeEvent;
 import mx.events.SandboxMouseEvent;
-import mx.events.TouchScrollEvent;
+import mx.events.GestureCaptureEvent;
 
 import spark.components.Button;
 import spark.events.TrackBaseEvent;

        if (instance == thumb)
        {
            thumb.addEventListener(MouseEvent.MOUSE_DOWN, thumb_mouseDownHandler);
            thumb.addEventListener(TouchScrollEvent.TOUCH_SCROLL_STARTING, thumb_touchScrollDragStart);
            thumb.addEventListener(ResizeEvent.RESIZE, thumb_resizeHandler);
            thumb.addEventListener(FlexEvent.UPDATE_COMPLETE, thumb_updateCompleteHandler);
            thumb.stickyHighlighting = true;

        if (instance == thumb)
        {
            thumb.removeEventListener(MouseEvent.MOUSE_DOWN, thumb_mouseDownHandler);
            thumb.removeEventListener(GestureCaptureEvent.GESTURE_CAPTURE_STARTING, thumb_gestureCaptureStartingHandler);
            thumb.removeEventListener(ResizeEvent.RESIZE, thumb_resizeHandler);            
            thumb.removeEventListener(FlexEvent.UPDATE_COMPLETE, thumb_updateCompleteHandler);            
        }
