var geocoder;
var directionDisplay;
var directionsService = new google.maps.DirectionsService();
var map;

function initialize() {
	directionsDisplay = new google.maps.DirectionsRenderer();
	geocoder = new google.maps.Geocoder();
	var startplace = new google.maps.LatLng(52.52340510, 13.41139990);
	var myOptions = {
zoom:8,disableDefaultUI: true,
mapTypeId: google.maps.MapTypeId.ROADMAP,
navigationControl: true,
			navigationControlOptions: {style: google.maps.NavigationControlStyle.},
mapTypeControl: true,
			mapTypeControlOptions: {style: google.maps.MapTypeControlStyle.},
center: startplace
	}
	map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
	directionsDisplay.setMap(map);
	directionsDisplay.setPanel(document.getElementById("map_directions"));

	google.maps.NavigationControlStyle.SMALL;
	codeAddress('');
	
}

function codeAddress(address) {
	if (geocoder) {
		geocoder.geocode( { 'address': address}, function(results, status) {
			if (status == google.maps.GeocoderStatus.OK) {
				map.setCenter(results[0].geometry.location);
				
				var infowindow = new google.maps.InfoWindow({
					content: ""
				});
				
				var marker = new google.maps.Marker({
					position: results[0].geometry.location,
					title:""
				});
						  
				marker.setMap(map); 
				
				google.maps.event.addListener(marker, 'click', function() {
					infowindow.open(map,marker);
				});

			} else {
				alert("Could not find the start location. Please be more specific!");
			}
		});
	}
}
	
function calcRoute() {
	var start = document.getElementById("fromAddress").value;
	var end = '';
	var request = {
		origin:start, 
		destination:end,
		travelMode: google.maps.DirectionsTravelMode.DRIVING
	};
	directionsService.route(request, function(result, status) {
		if (status == google.maps.DirectionsStatus.OK) {
			directionsDisplay.setDirections(result);
		}
	});
}