how can i play desert operations game in a mac book pro?

I am using a Mac Book Pro with OS X Yosemite 10.10.3 and i am trying to access to www.desert-operations.mx game, the webpage just display main page, i type login and password but i can not access to the game.

I already installed adobe flash player 18.0.0.209

I have modified security parameters in order to allow this webpage running