function initialize() {
    var myLatlng = new google.maps.LatLng(34.740131, 137.650366);
    var myOptions = {
      zoom: 14,
      center: myLatlng,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    }
    var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
    
    var marker = new google.maps.Marker({
        position: myLatlng, 
        map: map,
        title:""
    });   
  }