public Sprite getSubImage(int sX, int sY, int w, int h)
    {
	try {
		Sprite s = new Sprite(w, h);
		int[] thePixels = new int[w * h];
		for (int i = sX; i < w; i++)
		{
			for (int i1 = sY; i1 < h; i1++)
			{
				int i2 = i - sX;
				int i3 = i1 - sY;
				thePixels[i2 + i3 * w] = this.myPixels[i + i1 * this.myWidth];
			}
		}
		s.myHeight = h - sY;
		s.myWidth = w - sX;
		s.myPixels = thePixels;
		return s;
	} catch(Exception e) {
		e.printStackTrace();
	}
	return null;
    }