Ну, котики, мы допрыгались
Штудируем
http://ru.wikipedia.org/wiki/%D0%93%D0%BE%D1%82%D0%BE%D0%B2_%D0%BA_%D1%82%D1%80%D1%83%D0%B4%D1%83_%D0%B8_%D0%BE%D0%B1%D0%BE%D1%80%D0%BE%D0%BD%D0%B5_%D0%A1%D0%A1%D0%A1%D0%A0#III_.D1.81.D1.82.D1.83.D0.BF.D0.B5.D0.BD.D1.8C.C2.A0.E2.80.94_.C2.AB.D0.A1.D0.B8.D0.BB.D0.B0_.D0.B8_.D0.BC.D1.83.D0.B6.D0.B5.D1.81.D1.82.D0.B2.D0.BE.C2.BB.C2.A0.E2.80.94_.D0.B4.D0.BB.D1.8F_.D1.8E.D0.BD.D0.BE.D1.88.D0.B5.D0.B9_.D0.B8_.D0.B4.D0.B5.D0.B2.D1.83.D1.88.D0.B5.D0.BA_16.E2.80.9418_.D0.BB.D0.B5.D1.82