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";

function init() {
var map = new GMap2(document.getElementById("map"));
       map.setCenter(new GLatLng(45.5393, 3.79565), 8);
  
 map.addControl(new GLargeMapControl());
 map.addControl(new GMapTypeControl());
 map.disableDoubleClickZoom();
 

  var pt = new GLatLng(45.5393, 3.79565);

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

 map.setZoom(8); 
  map.setCenter(pt);
}