private static void addCompatibilityWarning(HTMLElement root) {
		for (Object o : root.getChildren()) {
			if (o instanceof HTML) {
				for (Object e : ((HTMLElement) o).getChildren()) {
					if (e instanceof BODY) {
						BODY body = (BODY) e;
						((BODY) e).addObject(new Warning(
								"You are using an incompatible Browser"));
					}
				}
			}
		}
	}