at this try2hack site, you have to try to "hack" what they give you, to challenge yourself to get to the next level

i think that in the code for
http://www.try2hack.nl/levels/level2.swf
the username/password needed to get to the next level is located.

problem is, how do i get to it, i always heard that you cant have commercial games in flash cuz someone can easily just steal your code, i need to know how to do that here, plz help