function swap(operand) {
	if (operand == "lodge") {
		document.getElementById("piclodge").style.visibility = "visible";
		document.getElementById("picroom1").style.visibility = "hidden";
		document.getElementById("picroom2").style.visibility = "hidden";
		document.getElementById("picroom3").style.visibility = "hidden";
	} else if (operand == "pic1") {
		document.getElementById("piclodge").style.visibility = "hidden";
		document.getElementById("picroom1").style.visibility = "visible";
		document.getElementById("picroom2").style.visibility = "hidden";
		document.getElementById("picroom3").style.visibility = "hidden";
	} else if (operand == "pic2") {
		document.getElementById("piclodge").style.visibility = "hidden";
		document.getElementById("picroom1").style.visibility = "hidden";
		document.getElementById("picroom2").style.visibility = "visible";
		document.getElementById("picroom3").style.visibility = "hidden";
	} else if (operand == "pic3") {
		document.getElementById("piclodge").style.visibility = "hidden";
		document.getElementById("picroom1").style.visibility = "hidden";
		document.getElementById("picroom2").style.visibility = "hidden";
		document.getElementById("picroom3").style.visibility = "visible";
	}
}