@Override
	public int getScrollableUnitIncrement(Rectangle visibleRect, int orientation, int direction) {
		//System.out.println("getScrollableUnitIncrement");
		switch(orientation) {
			case SwingConstants.VERTICAL:
				return visibleRect.height / 10;
				
			case SwingConstants.HORIZONTAL:
				return visibleRect.width / 10;
				
			default:
				throw new IllegalArgumentException("Invalid orientation: " + orientation);
		}
	}