Click a button, fill the screen

Hey all,

I’m looking for something I saw last year some time in the forums.
This is what it does:

There are a series of buttons on the top of the screen, and when clicked, they fill the stage area, and when clicked again, they move back to their original location.

As they switched, they ‘grew’ to the size visually.

K, don’t know if I explained myself correctly, but hopefully someone will be able to locate what I’m looking for.

Thanks a lot guys.