function initialize() {
  var latlng1 = new google.maps.LatLng(34.961108, 135.728341);
  var opts1 = {
    zoom: 15,
    center: latlng1,
    mapTypeControl: false,
    mapTypeId: google.maps.MapTypeId.ROADMAP,
    scrollwheel: false
  };
  var map1 = new google.maps.Map(document.getElementById("map_canvas1"), opts1);
  var latlng2 = new google.maps.LatLng(34.962224, 135.733166);
  var opts2 = {
    zoom: 15,
    center: latlng2,
    mapTypeControl: false,
    mapTypeId: google.maps.MapTypeId.ROADMAP,
    scrollwheel: false
  };
  var map2 = new google.maps.Map(document.getElementById("map_canvas2"), opts2);
  var latlng3 = new google.maps.LatLng(35.695339, 139.763623);
  var opts3 = {
    zoom: 15,
    center: latlng3,
    mapTypeControl: false,
    mapTypeId: google.maps.MapTypeId.ROADMAP,
    scrollwheel: false
  };
  var map3 = new google.maps.Map(document.getElementById("map_canvas3"), opts3);
  var latlng5 = new google.maps.LatLng(35.701935, 139.753132);
  var opts5 = {
    zoom: 15,
    center: latlng5,
    mapTypeControl: false,
    mapTypeId: google.maps.MapTypeId.ROADMAP,
    scrollwheel: false
  };
  var map5 = new google.maps.Map(document.getElementById("map_canvas5"), opts5);
  var latlng6 = new google.maps.LatLng(34.9691644, 135.8885353);
  var opts6 = {
    zoom: 15,
    center: latlng6,
    mapTypeControl: false,
    mapTypeId: google.maps.MapTypeId.ROADMAP,
    scrollwheel: false
  };
  var map6 = new google.maps.Map(document.getElementById("map_canvas6"), opts6);


  var image = {
    url : 'https://www.sunm.co.jp/img/marker.png',
    scaledSize : new google.maps.Size(42, 42)
  }

  var marker = new google.maps.Marker({
    position: latlng1,
    map: map1,
    icon: image,
    title: 'サンエムカラー本社'
  });
  var marker = new google.maps.Marker({
    position: latlng2,
    map: map2,
    icon: image,
    title: '印刷事業部'
  });
  var marker = new google.maps.Marker({
    position: latlng3,
    map: map3,
    icon: image,
    title: '東京支社'
  });
  var marker = new google.maps.Marker({
    position: latlng5,
    map: map5,
    icon: image,
    title: '水道橋営業所'
  });
  var marker = new google.maps.Marker({
    position: latlng6,
    map: map6,
    icon: image,
    title: '滋賀事業部'
  });

}