var map;
var markers = new Array(1);
function onLoad() {
      map = new GMap2(document.getElementById("map"));
      map.setCenter(new GLatLng(34.955687100873284,138.39611917734146),14);
      map.addControl(new GLargeMapControl());
      map.addControl(new GMapTypeControl());
      map.addControl(new GOverviewMapControl());
      map.setMapType(G_NORMAL_MAP);
      var marker = null;
      var n_markers = 0;
      var markeropts = new Object();
      marker = new GMarker(new GPoint(138.39624255895615,34.955748653983434), markeropts);
      markers[n_markers] = marker;
      n_markers++;
      map.addOverlay(marker);
}