Button inside button?

Hi
i was thinking if i could make a button that when you do mouseover it brings up a bar saying “background” at the top and a list of colours to choose
the colours are buttons and u click to change the background for the whole site

What would the actions be?

i thought maybe

 on (release) {
	gotoAndPlay("background", 2);
}
 

but when you go over the button inside the button it disapears to the buton u mouseover