Frame transition help

Hi, i am creating a presentation for school in flash. I need some help as I want to animate the transition between frames when buttons are pressed.

Check out the flash file of what I have done so far:

http://www.farahday.host.sk/paul.fla

I want it so that when a button is pressed the blue shapes close, hiding the whole screen and then open again to reveal the new page. Please help, either tell me how to do it or send me an updated fla file.

Paul