2 questions: 1. menu 2. reverse?

hi, i have 2 questions .

  1. can someone explain or show me how to program a menu like this easily?

menu should look like this:

  • 4 buttons in the center (one under the other)
  • if you click the first one the other move down and subbuttons appear underneath the forst one.
  • this should work with all of them.

my problem with that is the close mechanism.

example: first button is “opened” now you click the second. now it should close first and then open the second.

hope you understand my english ^^

second question could be used in that menu i think.
is there an action to play a movie reverse?

thx a lot for help!!!