function initialize() {

 


  var myLatlng = new google.maps.LatLng(47.86535, 2.21789);
  var myOptions = {
    zoom: 12,
    center: myLatlng,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  };

  var map = new google.maps.Map(
      document.getElementById("map_canvas"),
      myOptions);

  var nyLayer = new google.maps.KmlLayer(
      'http://www.voituressanspermis45.fr/____avenir1.kml',
      {  suppressInfoWindows: true,
         map: map});

  google.maps.event.addListener(nyLayer, 'click', function(kmlEvent) {
    var text = kmlEvent.featureData.description;
    showInContentWindow(text);
  });

  function showInContentWindow(text) {
    var sidediv = document.getElementById('content_window');
    sidediv.innerHTML = text;
  }


}