public JPanel getRegionPanel(String region) {
		if (region.equals(NORTH)) {
			return northPanel;
		} else if (region.equals(SOUTH)) {
			return southPanel;
		} else if (region.equals(WEST)) {
			return westPanel;
		} else if (region.equals(EAST)) {
			return eastPanel;
		} else if (region.equals(CENTER)) {
			return centerPanel;
		} else {
			throw new ErrorException("getRegionPanel: Illegal region " + region);
		}
	}