function load() {
  if (GBrowserIsCompatible()) {
    //map setting
    var map = new GMap2(document.getElementById("map"));
    map.setCenter(new GLatLng(35.6965841,139.4147486), 17);
    map.addControl(new GSmallMapControl());
    map.addControl(new GMapTypeControl());
    
    // set original marker
    var marker = new GMarker(new GLatLng(35.6958441,139.4147486));
    G_DEFAULT_ICON.image = "http://www.tamori-naika.com/files/image/map_pin.png";
    GEvent.addListener(marker, "click", function() {
      var html = '<div class="gmap-listener" style="width:auto;"><strong>たもり内科クリニック</strong><br /><small>立川市錦町2-1-33 立川南口ＨＭビル1Ｆ<br /><a href="/access/map-image" />より簡単な地図を表示</a></small><\/div>';
      marker.openInfoWindowHtml(html);
    });
    
    map.addOverlay(marker);
    GEvent.trigger(marker, "click");
  }
}