Making Two MovieClips Move Together

I’ve made a draggable menu for a flash site ([COLOR=SeaGreen]menu_mc[/COLOR]), but the buttons don’t work inside the movie clip when I apply startDrag. To remedy the problem, I simply made another movie clip ([COLOR=DarkOrchid]menubuttons[/COLOR]). I now want to more or less attach the two movieclips:

if (menu_mc.moveTo(x,y)) {

I also tried some pretty iffy statements:

menubuttons._x = menu_mc._x

That last one works initially, but when I move [COLOR=SeaGreen]menu_mc[/COLOR], [COLOR=DarkOrchid]menubuttons [/COLOR]stays put.