var icon = new GIcon();
icon.image = "http://www.google.com/mapfiles/marker.png";
icon.shadow = "http://www.google.com/mapfiles/shadow50.png";
icon.iconSize = new GSize(20, 34);
icon.shadowSize = new GSize(37, 34);
icon.iconAnchor = new GPoint(10, 34);

function usePointFromPostcode(postcode, callbackFunction) {
	var localSearch = new GlocalSearch();
	
	localSearch.setSearchCompleteCallback(null, 
		function() {
			if (localSearch.results[0])
			{		
				var resultLat = localSearch.results[0].lat;
				var resultLng = localSearch.results[0].lng;
				var point = new GLatLng(resultLat,resultLng);
				callbackFunction(point);
			}else{
				alert("Postcode not found!");
			}
		});	

	localSearch.execute(postcode + ", UK");
}

var marker = false;

function placeMarkerAtPoint(point)
{
	// remove the marker if it already exists
	if(marker != false)
	{
		map.removeOverlay(marker);
	}
	
	marker = new GMarker(point, {draggable: true, 'icon': icon } );
	
	GEvent.addListener(marker, "dragend", function() {
		var point = marker.getPoint();
		map.panTo(point);
		
		document.fire('gmaps:updatePoint', { lat: point.lat().toFixed(5), lon: point.lng().toFixed(5) } );
	});
	
	map.addOverlay(marker);
	
	setCenterToPoint(point);
}

function setCenterToPoint(point)
{
	map.setCenter(point, 17);
	
	document.fire('gmaps:updatePoint', { lat: point.lat().toFixed(5), lon: point.lng().toFixed(5) } );
}