Keeping two scrolling menus in same position

1

I’m using the ‘infinite’ menu from here and I was wondering this …
I have a top menu and a bottom menu(images to correspond with the above menu items). They both have the same onEnterFrame code so they both scroll in unison. What I’m doing is when the user clicks a top menu button, it’ll load a new image menu into the bottom menu. So, what I want to know is, is there a better way to make sure that the menus stay in sync rather than calling an _xpos for the scrolling menus from the menu buttons?

Like this:


someBtn.onRelease = function(){
bottom_menu._xpos = 200;
scrollmenu._x = 200;
}