Okay, so I am pretty new to all of this and I am trying to get a marker to be placed at a specific lat longitude when a map is loaded. Here is my code:

function initialize() {
    var map_canvas = document.getElementById('map_canvas');
	var myLatlng = new google.maps.LatLng(39.960478,-75.603013);
    var map_options = {
      center: myLatlng,
      zoom: 20,
	  mapTypeControl: true,
	  mapTypeControlOptions: {
      style: google.maps.MapTypeControlStyle.HORIZONTAL_BAR
    zoomControl: true,
    zoomControlOptions: {
      style: google.maps.ZoomControlStyle.LARGE
      mapTypeId: google.maps.MapTypeId.ROADMAP
  var map = new google.maps.Map(document.getElementById("map_canvas"), map_options);
  var marker = new google.maps.Marker({
	position: myLatlng,
	map: map
  google.maps.event.addDomListener(window, 'load', initialize);
unfortunetly now when i refresh the browser nothing loads, I used this tutorial: https://developers.google.com/maps/d...script/markers
thanks guys