Help with Sound Fade Button

programming flash
1

I will be having BG music on my site and will have a simple on and off button for it without a volume option. I want it to fade out when turned off, and fade in when turned on.

This is in the first frame of the actions layer:

musicOn = 1;
this.onEnterFrame = function() {
	if (fadeIn01 == 1) {
		_root.myLoop.setVolume(myLoopVolume);
		myLoopVolume = myLoopVolume+5;
		if (myLoopVolume>99) {
			fadeIn01 = 0;
		}
	}
	if (fadeOut01 == 1) {
		_root.myLoop.setVolume(myLoopVolume);
		myLoopVolume = myLoopVolume-5;
		if (myLoopVolume<5) {
			_root.myLoop.stop("myLoop01");
			fadeOut01 = 0;
		}
	}
};

This is what I have to create the sound in a seperate frame:

musicOn = 1;
this.onEnterFrame = function() {
	if (fadeIn01 == 1) {
		_root.myLoop.setVolume(myLoopVolume);
		myLoopVolume = myLoopVolume+5;
		if (myLoopVolume>99) {
			fadeIn01 = 0;
		}
	}
	if (fadeOut01 == 1) {
		_root.myLoop.setVolume(myLoopVolume);
		myLoopVolume = myLoopVolume-5;
		if (myLoopVolume<5) {
			_root.myLoop.stop("myLoop01");
			fadeOut01 = 0;
		}
	}
};

And this is what I have attached to the button:

musicOn = 1;
this.onEnterFrame = function() {
	if (fadeIn01 == 1) {
		_root.myLoop.setVolume(myLoopVolume);
		myLoopVolume = myLoopVolume+5;
		if (myLoopVolume>99) {
			fadeIn01 = 0;
		}
	}
	if (fadeOut01 == 1) {
		_root.myLoop.setVolume(myLoopVolume);
		myLoopVolume = myLoopVolume-5;
		if (myLoopVolume<5) {
			_root.myLoop.stop("myLoop01");
			fadeOut01 = 0;
		}
	}
};

I will also attach a link to the file since it is too big to host I think.
HERE IS THE FLA

Thanks for any help!!

ALSO: I will be loading this movie into another as an external movie. Do I need to change all the _root identifiers to this? or _parent?