I can't change my vertical scroll, need help!

programming flash
1

Hey
I have a easy dummie code were I have a vertical scroll and i’m trying to change it to horizontal
but I fail everytime I try to fix it and i kinda need some help here!

I have attach a .fla file so you can see it.

The as code is:


btnSlider.onPress = function() { 
	left = mcSliderBar._x;
	right = mcSliderBar._x
	top = mcSliderBar._y;
	bottom = mcSliderBar._y + mcSliderBar._height - btnSlider._height
	startDrag(this, false, left, top, right, bottom)
	Mouse.addListener(mouseListener);
}

btnSlider.onRelease = btnSlider.onReleaseOutside = function() { 
	stopDrag();
	Mouse.removeListener(mouseListener);
}

var mouseListener:Object = new Object();
mouseListener.onMouseMove = function() {
	HowFarCanSliderMove =  mcSliderBar._height - btnSlider._height
	HowFarMustContentsMove = mcContents._height - mcScrollWindow._height
	
	HowMustFasterMustContentMove = HowFarMustContentsMove/HowFarCanSliderMove
	HowFarIsSliderDownBar = btnSlider._y - mcSliderBar._y
	HowFarToMoveContents = HowFarIsSliderDownBar * HowMustFasterMustContentMove
	mcContents._y = mcScrollWindow._y - HowFarToMoveContents
};