Hit test

1

I am just trying to put this hit test on an infinate menu so it stops at last and first images. that was cool i just killed the on enterframe.
but stangly enough only the hit right is working.

any suggestions???

function activateMenu() {
	menu.onEnterFrame = function() {
		if(this.item == pictArray.length){
		}
			if ((_root._ymouse>=(_root.hit_right._y-40))) {
				trace("hit top");
				this._y += (speed);
			if (this._y<-sub_menu._height/3) {
				trace("up 1");
				this._y = this._y;
				delete menu.onEnterFrame;
			}
			if ((_root._ymouse>=(_root.hit_left._y-40))) {
				trace("hit new");
			}
			if (this._y>0) {
				trace("down 1");
				this._y = this._y;
				delete menu.onEnterFrame;
				his._y = -sub_menu._height/2;
		
			}
		}
	};
}