ActiveLand = "start";

function ShowLand(id) {
	if (ActiveLand == "start") {
		document.getElementById(id).style.visibility='visible';
		ActiveLand = id;
	} else {
		document.getElementById(ActiveLand).style.visibility='hidden';
		document.getElementById(id).style.visibility='visible';
		ActiveLand = id;
	}
}

function HideLand(id) {
	document.getElementById(id).style.visibility='hidden';
}