function switchMenu(id) {
	var oElements = document.getElementsByTagName("div");
	for (i=0;i < oElements.length; i++) {
		oElement = oElements[i];
		oElement_id = oElement.id;
		if (oElement_id == id) {
			if (oElement.style.display != "block") {
				oElement.style.display = 'block'
			} else {
				oElement.style.display = 'none'
			}
		} else if (oElement_id.substring(0, 4) == id.substring(0, 4)) {
/*		} else {*/
			oElement.style.display = 'none'
		}
	}
}

function initMap(lat, lng, zoom, memo) {
	var map = new google.maps.Map2(document.getElementById("map"));
	var point = new google.maps.LatLng(lat, lng);
	var marker = new google.maps.Marker(point);
	map.addControl(new google.maps.SmallMapControl());
	map.addControl(new google.maps.ScaleControl());
	map.setCenter(point, zoom);
	map.addOverlay(marker);
	google.maps.Event.addListener(marker, 'click', function() {
		marker.openInfoWindow(
			document.createTextNode(memo)
		);
	});
}