google.load("maps", "2.x");
   
  // ページが読み込まれたときにこの関数を呼び出します
  function initialize() {

    var map = new GMap2(document.getElementById("map_area"));
    var point = new GLatLng(35.660211, 140.489509);
    var html = "<h2 style=\"font-size:12px;\">有限会社ハヤカワ商行</h2><div style=\"font-size: 12px;\">〒289-1732<br>千葉県山武郡横芝光町横芝2028<br>TEL:0479-82-0509<br>FAX:0479-82-5588<br></div>";

    //map.addControl(new GMapTypeControl());
    //map.addControl(new GSmallMapControl());
    map.addControl(new GLargeMapControl());
    map.setCenter(new google.maps.LatLng(35.660211, 140.489509), 13);
    map.addOverlay(createMarker(point,html));
    map.openInfoWindowHtml(map.getCenter(),html);

    function createMarker(point,html){

      var marker = new GMarker(point);
      var message = html;

        GEvent.addListener(marker, "click", function(){
          map.openInfoWindowHtml(point, html);
        });

      return marker;

    }

  }