Expanding/revealing boxes

so i saw a really cool website here

i know it was done with Swift, but I would like to accomplish ONLY the expand effect. i want to have four pictures that expand and collapse like that. no jumping or bouncing (unless it’s easy!). :slight_smile:

can anyone teach me how to do that or point me in the right place?

i have good flash knowledge :slight_smile: i’m just not an action script expert.

thanks everyone!!!