var map = null;
var icon = new GIcon();
icon.image = "css/images/green_12.png";
icon.shadow = "css/images/transparent.png";
icon.iconSize = new GSize(12, 20);
icon.shadowSize = new GSize(12, 20);
icon.iconAnchor = new GPoint(6, 20);
icon.infoWindowAnchor = new GPoint(5, 1);
icon.transparent = "css/images/transparent.png";

var LAT_START = 45.38364;
var LNG_START = 3.75048;
var ZOOM_START = 8;

function init() {
  map = new GMap2(document.getElementById("map"));
  map.addControl(new GLargeMapControl());
  map.addControl(new GMapTypeControl());
  map.disableDoubleClickZoom();
  map.setCenter(new GLatLng(LAT_START, LNG_START), ZOOM_START, G_NORMAL_MAP); 

  var pt = new GLatLng(LAT_START, LNG_START);

  var marker = new GMarker(pt, icon);
  map.addOverlay(marker);

  map.setZoom(ZOOM_START); 
  map.setCenter(pt);
}