function initialize() {
  var myLatlng = new google.maps.LatLng(52.722778,6.218262);
  var myOptions = {
    zoom: 12,
    center: myLatlng,
    disableDefaultUI: true,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  }
  var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
  var weideLatLng = new google.maps.LatLng(52.75606,6.2286);
  var weideMarker = new google.maps.Marker({
      position: weideLatLng,
      map: map
  });
}
 
// marker 52.75606,6.2286 
function loadScript() {
  var script = document.createElement("script");
  script.type = "text/javascript";
  script.src = "http://maps.googleapis.com/maps/api/js?sensor=false&callback=initialize";
  document.body.appendChild(script);
}
  
window.onload = loadScript;