Do you know how to do this?

Hi everyone,

i saw this really amazing website http://www.johnbiondo.net/
i would like very much to know how to do this: when you press a menu button and press another menu button afterwards, the first menu button plays an ending animation for that specific button before it starts the animation for whatever second menu button you pressed, it’s a very cool transition, esp coz it doesn’t open to another page but sort of loads an mc into the same spot. Does kirupa have a tutorial for something like this?
Thanks!:bounce: