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                <!DOCTYPE html>
<html lang="en">
      <script src=""></script>    
       // p elements for displaying lat / long and address
       var displayCoords, myAddress; 
      // used with the google apis
      var geocoder;
      var map;
      var infowindow = new google.maps.InfoWindow();
      var marker;
      // Called when the page is loaded
      function init() {
        myAddress = document.getElementById("address");
        geocoder = new google.maps.Geocoder();
        // In order to show something even before a user clicked on the button
        var latlng = new google.maps.LatLng(34.0144, -6.83);
        var mapOptions = {
          zoom: 8,
          center: latlng,
          mapTypeId: 'roadmap'
        map = new google.maps.Map(document.getElementById('map_canvas'), mapOptions); 
       // Called when the button is clicked
       function getLocation() {
          if (navigator.geolocation) {
          } else {
          displayCoords.innerHTML="Geolocation API not supported by your browser.";
    // Called when a position is available
    function showPosition(position) {
        displayCoords.innerHTML="Latitude: " + position.coords.latitude + 
            "<br />Longitude: " + position.coords.longitude;   
        // Display the map
        showOnGoogleMap(new google.maps.LatLng(position.coords.latitude, position.coords.longitude));
    function showOnGoogleMap(latlng) {
        // Ask google geocoder for a surface address once we get a longitude and 
        // a latitude. In fact the reverse geocoder sends back an array of "guesses"
        // i.e. not only one address object, but several. Each entry in this array
        // has several properties like street, city, etc. We use the "formatted_address"
        // one here, but it might be interesting to get the detailed properties in other
        // applications like a form with street, city, zip code etc.
        geocoder.geocode({'latLng': latlng},reverseGeocoderSuccess);
        function reverseGeocoderSuccess(results, status) {
          if (status == google.maps.GeocoderStatus.OK) {
            // For debugging
            if (results[1]) {
              marker = new google.maps.Marker({
                  position: latlng,
                  map: map
    , marker);
              // Display address as text in the page
              myAddress.innerHTML="Adress: " + results[0].formatted_address;

            } else {
              alert('No results found');
          } else {
            alert('Geocoder failed due to: ' + status);
        } // end of reverseGeocoderSuccess
      }  // end of showOnGoogleMap
  <body onload="init()">
     <title>HTML5 + Geolocalisation + Google Maps API Reverse Geocoding</title>
    <p id="msg">Click the button to get your coordinates:</p>
    <p id="address"></p>
    <button onclick="getLocation()">Where am I ?</button>
      <div id="map_canvas" style="width: 500px; height: 300px"></div>