I'm using Googles Map API V3 to geocode an address, then I want to store the Latitude and Longitude that it is returning. The Latitude that I am hard coding to "35" is showing up as expected, however I'm failing to capture the "results" of the GeoCode request. Can anyone spot where I am missing them at?

Code:
function loadScript()
{
var script = document.createElement("script");
script.src = "http://maps.googleapis.com/maps/api/js?      key=AIzaSyDaukwjA3JdWZhHyUhvxiEHfKAjPhAz8jM&sensor=false&callback=initialize"; document.body.appendChild(script);
}

window.onload = loadScript;


var geocoder;
  var map;
  function initialize() {
    geocoder = new google.maps.Geocoder();
    var latlng = new google.maps.LatLng(-34.397, 150.644);
    var mapOptions = {
      zoom: 17,
      center: latlng,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    }
    map = new google.maps.Map(document.getElementById("map-canvas"), mapOptions);
  }

  function codeAddress() {
   var addresstxt = document.getElementById("properties_street_address").value;
   var citytxt = document.getElementById("properties_city").value;
   var statetxt = document.getElementById("properties_state").value;
   var zipcodetxt = document.getElementById("properties_zip_code").value;
   
    var address = addresstxt + ' ' + citytxt+','+ statetxt+' '+zipcodetxt;
    geocoder.geocode( { 'address': address}, function(results, status) {
      if (status == google.maps.GeocoderStatus.OK) {
        map.setCenter(results[0].geometry.location);
        var marker = new google.maps.Marker({
            map: map,
            position: results[0].geometry.location
        });
        var lat = '35';
        var lng = results[0].geometry.location.lng;
        document.getElementById("properties_lattitude").value = lat;
        document.getElementById("properties_longitude").value = lng;
      } else {
        alert("Geocode was not successful for the following reason: " + status);
      }
    });
  }