var map;
var gdir;
var geocoder = null;
var addressMarker;

// dados do ponto
// pegue-os do banco de dados
var marker;
var myHtml = "aqui voce poe qualquer conteudo html referente a este ponto!!!!";		
var latitude = "-20.372931935951932";
var longitude = "-40.648764967918396";
    var mapType = "1";

function initialize() {
	if (GBrowserIsCompatible()) {
		// crio o mapa
		map = new GMap2(document.getElementById("map_canvas")); //div de destino
		//map.setMapType(G_SATELLITE_MAP); // tipo de mapa
		//map.setMapType(G_HYBRID_TYPE); // tipo de mapa		
		//map.addMapType(G_PHYSICAL_MAP); // tipo de mapa
		
		// centralizo o mapa (centralize no mesma latitude e longitude que o ponto)
		map.setCenter(new GLatLng(latitude, longitude), 18);
        
		map.setMapType(map.getMapTypes()[1]); // tipo de mapa

		
		// controles
		map.enableScrollWheelZoom(); // controle pelo scrool do mouse
		map.addControl(new GMapTypeControl()); // controle do tipo de mapa (topo, lado direito)
		map.addControl(new GLargeMapControl());	// controle de localização (lado esquerdo) [tamanho grande]
		// map.addControl(new GSmallMapControl()); // controle de localização (lado esquerdo) [tamanho pequeno]				
		
		// ponto fixo
		var localizacao = new GLatLng(latitude, longitude); // latitude e longitude do ponto (busque no banco-de-dados)
		marker = new GMarker(localizacao);			
		GEvent.addListener(marker,"click", function() {						
			marker.openInfoWindowHtml(myHtml);		
		});	
		map.addOverlay(marker); 		
	
		// localizacao (traçar rota entre A e B)
		gdir = new GDirections(map, document.getElementById("directions"));		
		GEvent.addListener(gdir, "error", handleErrors);
		
	}
}
function setDirections(fromAddress, toAddress, locale) {
	gdir.load("from: " + fromAddress + " to: " + toAddress, { "locale": locale });
}

function handleErrors(){
	if (gdir.getStatus().code == G_GEO_UNKNOWN_ADDRESS)
		alert("No corresponding geographic location could be found for one of the specified addresses. This may be due to the fact that the address is relatively new, or it may be incorrect.\nError code: " + gdir.getStatus().code);
	else if (gdir.getStatus().code == G_GEO_SERVER_ERROR)
		alert("A geocoding or directions request could not be successfully processed, yet the exact reason for the failure is not known.\n Error code: " + gdir.getStatus().code);
	else if (gdir.getStatus().code == G_GEO_MISSING_QUERY)
		alert("The HTTP q parameter was either missing or had no value. For geocoder requests, this means that an empty address was specified as input. For directions requests, this means that no query was specified in the input.\n Error code: " + gdir.getStatus().code);
	else if (gdir.getStatus().code == G_GEO_BAD_KEY)
		alert("The given key is either invalid or does not match the domain for which it was given. \n Error code: " + gdir.getStatus().code);
	else if (gdir.getStatus().code == G_GEO_BAD_REQUEST)
		alert("A directions request could not be successfully parsed.\n Error code: " + gdir.getStatus().code);
	else 
		alert("An unknown error occurred.");
}