function L(key) {
	if (_locale == null) {
		throw new Error("Local settings not defined.");
	}
	
	var value = _locale[key];
	
	if (value === undefined) {
		throw new Error("A value for key: '" + key + "' has not been defined for the current locale: '" + _locale["id"] + "'");
	}
	
	return value;
}