loadMovie PROBLEMS

“loadMovie” has never been a problem for me, BUT now I have a porblem. I have a main movie “main.swf” and when navigating to other parts of the site I am using loadMovie(“AboutUs.swf”, “placeholder_mc”) to load content.

BUT my PROBLEM is my “AboutUs.swf” works great on it’s own, but when loaded in the “main.swf” it just sits there. None of the actionscript seems to work. The AboutUs.swf is very similar to this tutorial here: http://www.kirupa.com/developer/flash5/slidingmenu.htm

some of the actionscript is as follows:

MovieClip.prototype.move = function () {
dest = _root.xnew ;
pos = this._x ;
vel = (dest-pos)/6;
this._x += vel ;
}

and the button’s:

on (press) {
_root.xnew = _root.mask2._x+(8)*100/2;
}

SO my conclusion is that I need to alter the script to target the loaded the movie. I would love any advice as far as getting the actionscript to talk properly when loaded into another swf.

HELP