http://ru.wikipedia.org/wiki/%D0%92%D0%BE%D0%B7%D1%80%D0%B0%D1%81%D1%82_%D1%83%D0%B3%D0%BE%D0%BB%D0%BE%D0%B2%D0%BD%D0%BE%D0%B9_%D0%BE%D1%82%D0%B2%D0%B5%D1%82%D1%81%D1%82%D0%B2%D0%B5%D0%BD%D0%BD%D0%BE%D1%81%D1%82%D0%B8Добрее быть не пробовали? Вежливее?