Buttons are messing up?

Hi guys,

I am having trouble with unload an loading movies. Basically I am loading a movie into a container, which works a charm:

graphicsbut.onRelease = function() {

container._x = -22 ;
container._y = 0 ;


And then I want to load another movie above this one, also working:
Dyson_hit.onRelease = function()
loadMovieNum(“Graphics/Catwalks.swf”, 2);

But NOW the problem…I want to unload them both when a close button is pressed?
Ideally I would like to add that second movie clip into a container so I can position it correctly, but when I try copying the code I use on the first it doesn’t seem to work…is it to do with the “root” bit perhaps?