var map = null;
var geocoder = null;
var showmap = false;
var bounds = null;
var addresses = null;

function mapload() {
  if (GBrowserIsCompatible()) {
    map = new GMap2(document.getElementById("map"));
    map.addControl(new GSmallMapControl());
    map.addControl(new GMapTypeControl());
    geocoder = new GClientGeocoder();
    bounds = new GLatLngBounds();
  }
}

function showAddress(gmapAddress) {
	var description = null;
	var currAddress = null;
	var currPoint = null;
	var lat = null;
	var lang = null;
	var Exp1 = /(.+)\|(.+)/
	var Exp2 = /\((.+),(.+)\)/

	/* fill an array with all locations */
	addresses = gmapAddress.split(/\n/);
	for (i = 0; i < addresses.length; i++) {
		/*check on a descripive part (format: [description]|[adress])  */
		if (Exp1.exec(addresses[i]) != null ) {
			description = RegExp.$1;
			currAddress = RegExp.$2;			
		}
		else {
			description = null;
			currAddress = addresses[i];
		}
		
		/* check if this is an address or a pair of coordinates (must match format ([latitude], [longitude]) ) */
		if (Exp2.exec(currAddress) != null ) {
			lat 	= RegExp.$1;
			lang 	= RegExp.$2;
			currPoint = new GLatLng(parseFloat(lat), parseFloat(lang));
			
			/* add an geocoded point to the map */
			addGeocodedPoint(currPoint , description);
		} 
		else {
			/* add an address to the map */
			addAddress(currAddress, description);
		}
		
	}
}

function addGeocodedPoint(point, description) {
	map.setCenter(point);
	var marker = new GMarker(point);
	map.addOverlay(marker);

	GEvent.addListener(marker, "click",
		function() {
			marker.openInfoWindowHtml(description);
	});

	bounds.extend(new GLatLng(point.y, point.x));
	redraw();
}

function addAddress(currAddress, description) {
	if (geocoder) {
		geocoder.getLatLng(currAddress,
			function(point) {
				if (!point) {
					/* document.getElementById("map").style.display = 'none'; */
				} else {
					map.setCenter(point);
					var marker = new GMarker(point);
					map.addOverlay(marker);
					if (description != null) {
						GEvent.addListener(marker, "click",
						function() {
							marker.openInfoWindowHtml("<b>" + description + "</b><br/>" + currAddress);
						});
					}
					else {
						GEvent.addListener(marker, "click",
						function() {
							marker.openInfoWindowHtml("<b>" + currAddress.replace(/,/g, '<br>') + "</b>");
						});
					}
					bounds.extend(new GLatLng(point.y, point.x));
					redraw();
				}
		});
	}
}

function redraw() {
    map.setCenter(bounds.getCenter(), map.getBoundsZoomLevel(bounds)); 
    if (map.getZoom() > 15)
        map.setZoom(15);
}

function mapCallBack(point, currAddress) {
    alert(point);
    if (!point) {
        document.getElementById("map").style.display = 'none';
    } else {
        map.setCenter(point);
        var marker = new GMarker(point);
        map.addOverlay(marker);

        GEvent.addListener(marker, "click", 
            function() {
                marker.openInfoWindowHtml("<b>" + currAddress + "</b>");
            });
        
        bounds.extend(new GLatLng(point.y, point.x));
        redraw();
    }
}

function unloadMap() {
    GUnload();
}