code: public static void releaseGraphicsForImage(Image image) throws SlickException {
  		Graphics g = (Graphics) graphics.remove(image.getTexture());
  		
  		if (g != null) {
  			g.destroy();
  		}
  	}
docs: Release any graphics context that is assocaited with the given image
  
  @param image The image to release
  @throws SlickException Indicates a failure to release the context