Non-existing locale error

[CurlyBraceTT]

When setting non-exising locale (I set up 'idontexist') picker is not working. I understand, that it could be desireble behavior, but I don't have any ways to check if picker has a locale translate for my language. Tuned translate function a little:

var translate = function(locale, s) {
	if (typeof lang[locale] !== "undefined" && typeof lang[locale][s] !== "undefined"){
		return lang[locale][s];
	}
	return lang.en[s];
};