public static void register(int id, String fileName, int left, int top, int width, int height) {
   JGLTextureSpec spec = new JGLTextureSpec();
   spec.setFileName(fileName);
   ;
   spec.setLeft(left);
   ;
   spec.setTop(top);
   ;
   spec.setWidth(width);
   ;
   spec.setHeight(height);
   ;
   register(id, spec);
 }
 public static void register(int id, String fileName) {
   JGLTextureSpec spec = new JGLTextureSpec();
   spec.setFileName(fileName);
   register(id, spec);
 }