I am no expert by any means, and this is just a guess. However, I am currently in a flash class at my college and if I'm recalling correctly, a classmate made a comment regarding using multiple "if"s in the same way. I believe my professor said you would need to use "else if"s instead of continually using "if". Not sure if that is right or makes sense but it's worth a shot. Hope it works. If not, I tried =) Maybe the link below would help?
(take out curly brackets and spaces) sorry, won't let me post a "real" link because I'm new.