Ok, found and fixed a bug in Internet Explorer, where the game didn't leave the logo screen properly. Tricky. This should fix it for you, 1w2w3w4w5.
AcidFlux, thanks for the comments, very much appreciated! The gun you described is very similar to one I plan to add soon. The purpose of the number 1 gun is to shoot down planes, which is much harder to do with the rapidfire gun.
Yes, thanks, I've updated my game, added a pre-loader, which I think should fix some problems, and added support for the high scores API! Hope you like it.
Hey, I just found this out uploading my game -- don't put any dashes or underscores or spaces or special characters in the filename that you upload, or it doesn't display! Hope that helps.