var map = null;
    var geocoder = null;
	var marker = null;
    function initialize() {
      if (GBrowserIsCompatible()) {
	    var crossLayer = new GTileLayer(new GCopyrightCollection(""), 0, 15);
        crossLayer.getTileUrl =  function(tile, zoom) {
          return "./include/tile_crosshairs.png";
        }
        crossLayer.isPng = function() {return true;}

        // Create a new map type incorporating the tile layer
        var layerTerCross = [ G_PHYSICAL_MAP.getTileLayers()[0],
                              crossLayer ];
        var mtTerCross = new GMapType(layerTerCross,
                                      G_PHYSICAL_MAP.getProjection(), "Ter+");
        map = new GMap2(document.getElementById("map_canvas"));
        map.setCenter(new GLatLng(52.467612, -0.571289), 8);
        geocoder = new GClientGeocoder();
		  map.addControl(new GLargeMapControl())

        var mapControl = new GHierarchicalMapTypeControl();
        
        // Set up map type menu relationships
        mapControl.clearRelationships();
        mapControl.addRelationship(G_SATELLITE_MAP, G_HYBRID_MAP, "Labels", false);
        mapControl.addRelationship(G_PHYSICAL_MAP, mtTerCross, "Crosshairs");
  
        // Add control after you've specified the relationships
        map.addControl(mapControl);
      }
    }
	
	
	

    function showAddress(address) {
      if (geocoder) {
        geocoder.getLatLng(
          address,
          function(point) {
            if (!point) {
              alert(address + " not found");
            } else {
              map.setCenter(point, 8);
			  marker = new GMarker(point);
			  
			  map.addOverlay(marker);
            }
          }
        );
      }
    }