// determine lat, log, zoom
    var lat  = 50.629864;   // default latitude
    var long = -120.441742; // default longitude
    var zoom = 12;         // default zoom
    function getLatLongZoom() {
      searchString = window.location.search;
      if (searchString.indexOf("lat=") != -1) {
        startPos = searchString.indexOf("lat=") + 4;
        endPos   = searchString.length;
        lat      = parseFloat(searchString.substr(startPos, endPos));
      }
      if (searchString.indexOf("long=") != -1) {
        startPos = searchString.indexOf("long=") + 5;
        endPos   = searchString.length;
        long     = parseFloat(searchString.substr(startPos, endPos));
      }
      if (searchString.indexOf("zoom=") != -1) {
        startPos = searchString.indexOf("zoom=") + 5;
        endPos   = searchString.length;
        zoom     = parseInt(searchString.substr(startPos, endPos));
      }
    }
    // called onLoad
    var iconBlue = new GIcon();
    iconBlue.image = 'images/mm_20_blue.png';
    iconBlue.shadow = 'images/mm_20_shadow.png';
    iconBlue.iconSize = new GSize(12, 20);
    iconBlue.shadowSize = new GSize(22, 20);
    iconBlue.iconAnchor = new GPoint(6, 20);
    iconBlue.infoWindowAnchor = new GPoint(5, 1);

    var iconRed = new GIcon();
    iconRed.image = 'images/mm_20_red.png';
    iconRed.shadow = 'images/mm_20_shadow.png';
    iconRed.iconSize = new GSize(12, 20);
    iconRed.shadowSize = new GSize(22, 20);
    iconRed.iconAnchor = new GPoint(6, 20);
    iconRed.infoWindowAnchor = new GPoint(5, 1);

    var customIcons = [];
    customIcons["ForSale"] = iconRed;
    customIcons["Sold"] = iconBlue;

    // called onLoad
    function load() {
      if (GBrowserIsCompatible()) {
        // Create map
        var map = new GMap2(document.getElementById("map"));
        // Center map
        getLatLongZoom(); // get lat, log, zoom
        var point = new GLatLng(lat, long); // var point = new GLatLng(50.614291, -120.461998);
        map.setCenter(point, zoom, G_HYBRID_MAP); // map.setCenter(point, 5, G_NORMAL_MAP);
        // Add controls
        map.addControl(new GMapTypeControl());
        // map.addControl(new GOverviewMapControl());
        // map.addControl(new GScaleControl());
        map.addControl(new GLargeMapControl());
        // map.addControl(new GSmallMapControl());

        GDownloadUrl("map.xml", function(data) {
          var xml = GXml.parse(data);
          var markers = xml.documentElement.getElementsByTagName("marker");
          for (var i = 0; i < markers.length; i++) {
            var name = markers[i].getAttribute("name");
            var address = markers[i].getAttribute("address");
            var width = markers[i].getAttribute("width");
            var height = markers[i].getAttribute("height");
            var type = markers[i].getAttribute("type");
            var point = new GLatLng(parseFloat(markers[i].getAttribute("lat")),
                                    parseFloat(markers[i].getAttribute("lng")));
            var marker = createMarker(point, name, address, width, height, type);
            map.addOverlay(marker);
          }
        });
      }
    }

    function createMarker(point, name, address, width, height, type) {
      var marker = new GMarker(point, customIcons[type]);
      var infoHtml = '<div align="center">';
      infoHtml += name;
      infoHtml += '<br />';
      infoHtml += address;
      infoHtml += '</div>';
      GEvent.addListener(marker, 'click', function() {
        marker.openInfoWindowHtml(infoHtml);
      });
      return marker;
    }