Help with some sliding code

hello all,

a quick and i think relatively simple code addition (although i can’t figure it out)…

on the attached .fla, can someone please help me with the code i should add so when you click the “3” button, the white box moves down, and then over to the left 500px or so. i can make it so it move diagonally, but i want it to move down first, and after it has moved down, it slides over to the left. any help would be very much appreciated.

thanks for any help!
s.