public void updateCityColour(String forceName, String cityName)
    {
        setCityImageLocation(forceName);        // Gets the city image path for inForce.
        switch (cityName)                      // Sets the city image for inCity.
        {
            case "许昌": //gp.getXuchangButton().setIcon(new ImageIcon(getClass().getResource(cityImageLocation)));
                        //gp.getXuchangButton().setPressedIcon(new ImageIcon(getClass().getResource(cityImagePressedLocation)));
                        break;
            case "江陵": //gp.getJianglingButton().setIcon(new ImageIcon(getClass().getResource(cityImageLocation)));
                        //gp.getJianglingButton().setPressedIcon(new ImageIcon(getClass().getResource(cityImagePressedLocation)));
                        break;
            case "柴桑": //gp.getChaisangButton().setIcon(new ImageIcon(getClass().getResource(cityImageLocation)));
                        //gp.getChaisangButton().setPressedIcon(new ImageIcon(getClass().getResource(cityImagePressedLocation)));
                        break;
            case "襄阳": //gp.getXiangyangButton().setIcon(new ImageIcon(getClass().getResource(cityImageLocation)));
                        //gp.getXiangyangButton().setPressedIcon(new ImageIcon(getClass().getResource(cityImagePressedLocation)));
                        break;
            case "庐江": //gp.getLujiangButton().setIcon(new ImageIcon(getClass().getResource(cityImageLocation)));
                        //gp.getLujiangButton().setPressedIcon(new ImageIcon(getClass().getResource(cityImagePressedLocation)));
                        break;
            default: break;
        }
    }