Orb Blaster

You play as a cannon trying to shoot the falling orbs. I have (tried to) integrate the Kongregate API into this game. Just to let you know (before I get a lot of comments on this ?issue?) I have PURPOSEFULLY set the game so that you can only have one bullet on the screen at a time. If you want me to change it, comment on it. I am going to add sounds, but there has been a glitch and I will update the game. Please note that I am a beginner Flash programmer and this is my first ?real? game.