a function used to locate lat/lng by address name (google maps api v3)

geocoding_script

function initialize() {
  map = new google.maps.Map(document.getElementById("your_map_canvas"));
  // example => geocoding('China Beijing')
  function geocoding(address){
      geocoder.geocode( {'address': address }, function(results, status) {
        if(status == google.maps.GeocoderStatus.OK){
            $.map(results, function(item) {
              map.setCenter(new google.maps.LatLng(item.geometry.location.lat(),item.geometry.location.lng()));
              map.setZoom(item.address_components.length * 2 + 3);
              marker.setPosition(map.getCenter())
            })
        }
        else{
          alert('Can not find' + address);
        };      
      });
    };
}