NavPeople = new Image(48,17); NavPeople.src = "gpx/menu_people.gif";
NavPeopleOn = new Image(48,17); NavPeopleOn.src = "gpx/menu_people_on.gif";
NavPlaces = new Image(48,17); NavPlaces.src = "gpx/menu_places.gif";
NavPlacesOn = new Image(48,17); NavPlacesOn.src = "gpx/menu_places_on.gif";
NavContact = new Image(48,17); NavContact.src = "gpx/menu_contact.gif";
NavContactOn = new Image(48,17); NavContactOn.src = "gpx/menu_contact_on.gif";

function TurnOn(imgname) {
	document.getElementById(imgname).src = eval( imgname + "On.src" );
}
function TurnOff(imgname) {
	document.getElementById(imgname).src = eval( imgname + ".src" );
}