Going completely bezerk

Dear flash geniuses,
I am going nuts trying to submit an assignment for school and despite the many questions to the professor I seem to be going in a loop.
I am sure that for you it’s quite silly, however I am in trouble!!!
Can any of you tell me how to fix the button links up top? they seem to be going anywhere they want despite my programming them to go to specific pages… I used to have transitions and other cool stuff in there, but I ended up simplifying hoping it would avoid link problems… I was wrong… now the site is too simple and the buttons don’t even work, how about that.

You can find the files under assignment 4 “work in progress” here:

Please help!!!
thank you so much for the attention