Even i was confused after watching this link

http://www.youtube.com/watch?v=5zzHIf9YQ0M

Please check this 2 links u ll hav still more confusion

http://www.youtube.com/watch?v=_Q0T_s_cl8g&feature=player_embedded

http://www.youtube.com/watch?v=VvWs0zhHpPI&feature=related

If any 1 has any idea please do share it.