Сессия



здесь swf - http://tka4.org/materials/study/7%20sem/%d0%a7%d1%82%d0%be%20%d0%bd%d0%b0%d1%81%20%d0%b6%d0%b4%d1%91%d1%82%20%d0%b2%20%d1%81%d0%b5%d1%81%d1%81%d0%b8%d1%8e.swf