Scroller problems

1

Hey im having some trouble with a scroller. For some reason the button that scroll upp doesent work properly. Its acting real wierd. It for a website i am making as an assignment for my digital application course.

Link: Scroll swf

The code:

btnUp.onPress = function() {
		this.onEnterFrame = function() {
			if (contentMain._y + speed < maskedView._y) {
				if (dragger._y <= top) {
					dragger._y = top;
					contentMain._y += speed;
				} else {
					contentMain._y += speed;
					dragger._y -= speed / moveVal;
				}
			} else {
				dragger._y = top;
				contentMain._y = maskedView._y;
				delete this.onEnterFrame;
			}
		};
	};
	btnUp.onDragOut = function() {
		delete this.onEnterFrame;
	};
	btnUp.onMouseOut = function() {
		delete this.onEnterFrame;
	};

apretiate all the help i can get. :smiley: