3-way If/Else toggle

I have several buttons which make visible different sub navigations - however some of the sub navigations are relative to more than one section.
The button code below works for the individual buttons, but I need it to say something like this:

  • if Btn1 is selected myMC is visible.
  • if Btn2 is selected myMC is visible.
  • if both buttons are selected and the user deselects one of the buttons myMC is visible.
  • if both Btn1 and Btn2 are deselected myMC is not visible.
Btn1.onRelease = function() {
if (myMC._visible == false) {
		myMC._visible = true;
	} else {
		myMC._visible = false;
	}
Btn2.onRelease = function() {
if (myMC._visible == false) {
		myMC._visible = true;
	} else {
		myMC._visible = false;
	}

does that make sense? thanks in advance…