public static String getSupportedLanguage(String current) {
		String result = "en";
		CharSequence[] entries = AppState.getContext().getResources()
				.getStringArray(R.array.values_language);
		for (CharSequence lang : entries) {
			if (lang.equals(current.toLowerCase())) {
				result = current;
				break;
			}
		}
		return result;
	}