@Override
	public void mouseWheelMoved(MouseWheelEvent event) {
		if (event.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) {
			int amt = event.getUnitsToScroll();
			JScrollBar bar = event.isShiftDown() ? mHSB : mVSB;
			bar.setValue(bar.getValue() + amt * bar.getUnitIncrement());
		}
	}