var map = null;
    var showCoord = true;
    var mapMarker = null;
    var mapCenter = new Array();
    
    /* GlocalSearch is to be used for UK maps */
    var localSearch = new GlocalSearch();
    
    mapCenter['Beijing 2008 lat']    = 39.93;
    mapCenter['Beijing 2008 lng']    = 116.400001;
    mapCenter['Beijing 2008 zoom']   = 11;
    mapCenter['Beijing 2008 type']   = G_NORMAL_MAP;
    mapCenter['Vancouver 2010 lat']  = 49.250494;
    mapCenter['Vancouver 2010 lng']  = -123.111934;
    mapCenter['Vancouver 2010 zoom'] = 11;
    mapCenter['Vancouver 2010 type'] = G_NORMAL_MAP;
    mapCenter['Whistler 2010 lat']   = 50.11557;
    mapCenter['Whistler 2010 lng']   = -122.959156;
    mapCenter['Whistler 2010 zoom']  = 11;
    mapCenter['Whistler 2010 type']  = G_NORMAL_MAP;
    mapCenter['Other Areas 2010 lat']   = 49.621387;
    mapCenter['Other Areas 2010 lng']   = -122.398682;
    mapCenter['Other Areas 2010 zoom']  = 7;
    mapCenter['Other Areas 2010 type']  = G_NORMAL_MAP;
    mapCenter['London 2012 lat']     = 51.500197;
    mapCenter['London 2012 lng']     = -0.126197;
    mapCenter['London 2012 zoom']    = 11;
    mapCenter['London 2012 type']    = G_NORMAL_MAP;

    /* Initialise icons */
    var ihouse32  = new GIcon();
    var ivenue32  = new GIcon();
    
    ihouse32.image = "images/home-32.png";
    ihouse32.iconSize = new GSize(25, 25);
    ihouse32.iconAnchor = new GPoint(12, 12);
    ihouse32.infoWindowAnchor = new GPoint(20, 5);
    
    ivenue32.image = "images/venue-32.png";
    ivenue32.iconSize = new GSize(32, 32);
    ivenue32.iconAnchor = new GPoint(12, 12);
    ivenue32.infoWindowAnchor = new GPoint(20, 5);
    
   
    /* ********************************************************* */
    /* Function to call to initialize the map  */
    /* ********************************************************* */
    function loadMap(gameName, gameId, est_id, loadMarkers, showCoord) {
    
      if (GBrowserIsCompatible()) {
        map = new GMap2(document.getElementById("map"));
        var url = "genMarkersXML.php?gam_id=" + gameId;
        map.addControl(new GSmallMapControl());
        map.addControl(new GMapTypeControl());
		    map.addMapType(G_PHYSICAL_MAP);

        if (est_id == null){
          map.setCenter(new GLatLng(mapCenter[gameName + ' lat'] , mapCenter[gameName + ' lng']), mapCenter[gameName + ' zoom']);
        }else{
          map.setCenter(new GLatLng(mapCenter[gameName + ' lat'] , mapCenter[gameName + ' lng']), mapCenter[gameName + ' zoom']);
          url = url + "&est_id=" + est_id + "&show=true";
        }

        if (showCoord) {
          GEvent.addListener(map, "click", ratg_mapClicked);
        }

        if (loadMarkers == true) {
          // alert("url: " + url);
          GDownloadUrl(url, function(data) {
            var xml = GXml.parse(data);
            var markers = xml.documentElement.getElementsByTagName("marker");
            for (var i = 0; i < markers.length; i++) {
              var type=markers[i].getAttribute("type");

              if (type == "house"){
                var title = markers[i].getAttribute("title");
                var id = markers[i].getAttribute("id");
                var bedroom = markers[i].getAttribute("bedroom");
                var bathroom = markers[i].getAttribute("bathroom");
                var sqft = markers[i].getAttribute("sqft");
                var point = new GLatLng(parseFloat(markers[i].getAttribute("lat")),
                                        parseFloat(markers[i].getAttribute("lng")));
                var html = '<span class=\"infoWindowLink\"><a href=\"view-estate.php?est_id='+id+'\">' + title + '</a><br \>- ' + bedroom +' bedroom(s)<br \>- ' + bathroom + ' bathroom(s)<br />- ' + sqft + 'sq/ft</ul></span>';
                var marker = createMarker(point, html, {icon:ihouse32});
  
                if (est_id != null && parseFloat(markers[i].getAttribute("lat")) != 0 && parseFloat(markers[i].getAttribute("lng")) != 0){
                  map.setCenter(point, 13);
                }else{
                  map.setCenter(new GLatLng(mapCenter[gameName + ' lat'] , mapCenter[gameName + ' lng']), mapCenter[gameName + ' zoom']);
                }
                map.addOverlay(marker);
                
              }else if (type == "venue"){
                var venue = markers[i].getAttribute("venue");
                var URL = markers[i].getAttribute("url");
                var point = new GLatLng(parseFloat(markers[i].getAttribute("lat")),
                                        parseFloat(markers[i].getAttribute("lng")));
                var html = '<span class=\"infoWindowLink\"><br \><a href=\"'+ URL + '\" target=\"_blank\">' + venue + '</a></span>';
                var marker = createMarker(point, html, {icon:ivenue32});
                map.addOverlay(marker);
              }
            }
          });
        }
      }
    }


    function createMarker(point, html, type) {
      var marker = new GMarker(point, type);
      /*
      GEvent.addListener(marker, 'click', function() {
        marker.openInfoWindowHtml(html);
      });
      */
      GEvent.addListener(marker, "mouseover", function() {
        marker.openInfoWindowHtml(html);
      });
      
      return marker;
    }    
    
    /* ************************************** */
    /* Center map on given game               */
    /* ************************************** */
    function centerMapForGame(gameName)
    {
      map.setCenter(new GLatLng(mapCenter[gameName + ' lat'] , mapCenter[gameName + ' lng']), mapCenter[gameName + ' zoom']);
      map.setMapType(mapCenter[gameName + ' type']);
    }

    /* ************************************** */
    /* Callback when map is clicked           */
    /* ************************************** */
    function ratg_mapClicked(marker, point) {
      if (marker) {
        var point1 = marker.getPoint();
        marker.openInfoWindowHtml(infoWindow[point1.lat() + ',' + point1.lng()]);
      }else{
        if (showCoord){
          if (mapMarker == null){
            mapMarker = new GMarker(point,{icon:ihouse32});
          }else{
            mapMarker.setPoint(point,{icon:ihouse32});
          }

          map.addOverlay(mapMarker);
          mapMarker.openInfoWindowHtml("<span class=\"infoWindowLink\">New coordinates:<br />latitude: " + point.lat() + "<br>longitude: " + point.lng() + "</span>");
          document.estate.est_lat.value = point.lat();
          document.estate.est_lng.value = point.lng();
        }
      }
    }

    /* ************************************* */
    /* Return a GPoint from address          */
    /* ************************************* */
    function searchGoogleMaps(address) {
      
      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);
            showFullAddressInfo(address, false, point);
          }else{
            alert("address not found!");
          }
        });  
        
      localSearch.execute(address);
    }

    /* ***************************************** */
    /* Show the full address info on the map and 
       display an info window with the geocodes  */
    /* ***************************************** */
    function showFullAddressInfo(address, showCoord, point)
    {
      if (!point) {
        alert("Address not found");
      } else {
        var coord = "";
        map.setCenter(point, 13);

        if (mapMarker == null){
          mapMarker = new GMarker(point,{icon:ihouse32});
        }else{
          mapMarker.setPoint(point,{icon:ihouse32});
        }

        map.addOverlay(mapMarker);
        if (showCoord) {
          coord = "<br>" + "lat: " + point.lat() + "<br>long: " + point.lng();
        }
        var html =  "<span class=\"infoWindowLink\"><br>" + address + coord + "</span>";
        mapMarker.openInfoWindowHtml(html);
        document.estate.est_lat.value = point.lat();
        document.estate.est_lng.value = point.lng();

      }
    }