public void DrawGateways(Graphics2D g2d)
    {
	for (int i = 0; i < gateways.size(); i++) {
		Object o = gateways.get(i);
		Gateway bo = (Gateway)o;
		g2d.drawImage(bo.getImage(), bo.getx()+map.getx(), bo.gety()+map.gety(), this);
	}
    }