function loadGMap(lon, lat, info_adicional) {
   if (GBrowserIsCompatible()) {
     var map = new GMap2(document.getElementById("cuadro_gmap"));
     map.setCenter(new GLatLng(lat, lon), 13);
     map.addControl(new GLargeMapControl()); map.addControl(new GOverviewMapControl());
     var icon = new GIcon();

     marker = new GMarker(new GLatLng(lat, lon));
     map.addOverlay(marker);

     GEvent.addListener(marker, "click", function(){
     marker.openInfoWindowHtml(info_adicional)});

   }
}