public void draw(Graphics g) {
		g.setColor(Color.BLUE);
		g.drawRect(bounds.left(),bounds.top(),bounds.width()-1,bounds.height()-1);
		if (nodes.get(0) != null) {
			for (int i = 0; i < 4; i++) {
				nodes.get(i).draw(g);
			}
		}
	}