var map = null;
    var geocoder = null;

    function load() {
      if (GBrowserIsCompatible()) {
        map = new GMap2(document.getElementById("map"));
        // GClientGeocoderを初期化
        geocoder = new GClientGeocoder();
        map.addControl(new GSmallMapControl());
      }
    }
    
    function showAddress(address) {
    if (geocoder) {
      geocoder.getLatLng(
      address,
        function(point) {
          if (!point) {
            alert(address + "は見つかりません");
          } else {
            map.setCenter(point, 17);
            var marker = new GMarker(point);
            map.addOverlay(marker);
          }
        }
      );
      }
    }