public static String getKeys(String which) {
		int[] case_ = { 1, 2, 3 };
		String[] which_ = { "ip", "user", "pass" };
		int use = 0;
		for (int i = 0; i < which_.length; i++) {
			if (which == which_[i]) {
				use = case_[i];
			}
		}
		switch (use) {
		case 1:
			return Variables.ip;
		case 2:
			return Variables.user;
		case 3:
			return Variables.pass;
		}
		return null;
	}