Level problems?

I’m loading external movies into blank movie clips on different levels, For example: I load the “portfolio” section of my site from an external movie into a blank movie clip on my main timeline. Then I load a sub section (“illustrations”) into a blank movie clip on the “portfolio” timeline. My problem is that I have an actionscript on the “illustrations” sub section timeline (to scroll images) that does not function properly. I believe it has to do with levels, but I’m still a little new at this so I’m not sure.

Here is an example of the script I’m using:

onClipEvent (load) {
_parent.largePieceWidth = _width/_parent.pieces;
}

onClipEvent (enterFrame) {
dx = (_parent.LargeSliderTargetLoc - _x) / 3.7
_x = _x+dx;
}

I think the _parent tag is my problem, maybe I need to add the level to it? I tried using _root and this, neither of those worked either. Any help would be much appreciated.

Thanks in advance…

-P.