how can i do this script work when it loads on other file?

[cutmim]

Ex. the file with the script gonna load on the "main" file, but the movement of the movieclips doens't work.

The script i'm using is this:

onClipEvent (enterFrame) {
_root.navegacao._y+= (yy-_root.navegacao._y)/5;
_root.navegacao1._y+= (yy-_root.navegacao1._y)/5;
_root.navegacao2._y+= (yy-_root.navegacao2._y)/5;
_root.navegacao3._x+= (xx-_root.navegacao3._x)/5;
}

If anyone could help me?