var map = null;
    var geocoder = null;
    function initialize() {
      if (GBrowserIsCompatible()) {
        map = new GMap2(document.getElementById("map_canvas"));
        map.setCenter(new GLatLng(-25.274398,133.775136), 4);
        map.addControl(new GSmallMapControl());
        map.addControl(new GMapTypeControl());
        geocoder = new GClientGeocoder();
         icon = new GIcon();
         icon.iconSize = new GSize(12, 20);
         icon.shadowSize = new GSize(22, 20);
         icon.iconAnchor = new GPoint(6, 20); 
      }
    }

    function addAddressToMap(response) {
      map.clearOverlays();
      if (!response || response.Status.code != 200) {
        alert("Sorry, we were unable to geocode that address");
      } else {
        place = response.Placemark[0];
        point = new GLatLng(place.Point.coordinates[1],
                            place.Point.coordinates[0]);
        marker = new GMarker(point);
        map.addOverlay(marker);
        marker.openInfoWindowHtml(place.address + '<br>' +
          '<b>Country code:</b> ' + place.AddressDetails.Country.CountryNameCode);
      }
    }

    function findLocation(address) {
      document.forms[0].q.value = address;
      showLocation();
    }

    function showLocation() {
      var address = document.forms[0].q.value;
      geocoder.getLocations(address, addAddressToMap);
    }

    function showAddress(address,placename) {
      if (geocoder) {
        geocoder.getLatLng(
          address,
          function(point) {
            if (!point) {
              alert(address + " not found");
            } else {
              map.setCenter(point, 15);
              var marker = new GMarker(point);
              map.addOverlay(marker);
              marker.openInfoWindowHtml('<b>' + placename + '</b><br>' + address);
            }
          }
        );
      }
    }