function swapDivs(boxID) {
	/* Obtain reference for the selected boxID layer and its button */
	var box = document.getElementById(boxID);
	
	/* If the selected box is currently invisible, show it */
	if(boxID == "elevation-one") {
		box.style.display = "block";
		document.getElementById("elevation-two").style.display = "none";
		document.getElementById("elevation-three").style.display = "none";
		document.getElementById("elevation-four").style.display = "none";
	}
	if(boxID == "elevation-two") {
		box.style.display = "block";
		document.getElementById("elevation-one").style.display = "none";
		document.getElementById("elevation-three").style.display = "none";
		document.getElementById("elevation-four").style.display = "none";
	}
	if(boxID == "elevation-three") {
		box.style.display = "block";
		document.getElementById("elevation-two").style.display = "none";
		document.getElementById("elevation-one").style.display = "none";
		document.getElementById("elevation-four").style.display = "none";
	}
	if(boxID == "elevation-four") {
		box.style.display = "block";
		document.getElementById("elevation-two").style.display = "none";
		document.getElementById("elevation-three").style.display = "none";
		document.getElementById("elevation-one").style.display = "none";
	}
	
}