Nice job
This was an interesting game you made. The entry of both name/password may be slightly redundant however.
Incidentally, if you want to expand on the game (it's a bit of work) but I think it will be worth it.
Have levels to the game.
Level 1, you're a frog avoiding cars a la Frogger.
Level 2, you're a spaceship avoiding meteors.
Level 3, you're a Ninja avoiding snakes,
etc.
So each time a level is passed the player is rewarded with new graphics and new background music to each level.
That's what us players like to see anyways, is diversity, surprises, and that which piques our curiosity to play more. :)
David