Code:
timer = 0;
onEnterFrame = function(){
	if(timer <= 60){ //change that number to the desired number of frames to wait before hiding
		timer ++;
	}else{
		ba._visible = false;
		bb._visible = false;
		bc._visible = false;
		bd._visible = false;
		controlpanel._visible = false;
	}
}
onMouseMove = function(){
	ba._visible = true;
	bb._visible = true;
	bc._visible = true;
	bd._visible = true;
	controlpanel._visible = true;
	timer = 0;
}
That should be it.