function onGDirectionsLoad(){ 
   var poly = currentPath.getPolyline();
   if (poly.getVertexCount() > 100) {
     //alert("This route has too many vertices");
     $('printMap').update('Impossible de générer une version imprimable de cette carte');
     return;
   }
   var baseUrl = "http://maps.google.com/staticmap?";

   var params = [];
   var markersArray = [];
   markersArray.push(poly.getVertex(0).toUrlValue(5) + ",greena");
   markersArray.push(poly.getVertex(poly.getVertexCount()-1).toUrlValue(5) + ",greenb");
   params.push("markers=" + markersArray.join("|"));

   var polyParams = "rgba:0x0000FF80,weight:5|";
   var polyLatLngs = [];
   for (var j = 0; j < poly.getVertexCount(); j++) {
     polyLatLngs.push(poly.getVertex(j).lat().toFixed(5) + "," + poly.getVertex(j).lng().toFixed(5));
   }
   params.push("path=" + polyParams + polyLatLngs.join("|"));
   params.push("size=600x500");
   params.push("key=ABQIAAAAjU0EJWnWPMv7oQ-jjS7dYxSPW5CJgpdgO_s4yyMovOaVh_KvvhSfpvagV18eOyDWu7VytS6Bi1CWxw");

   baseUrl += params.join("&");

   var extraParams = [];
   extraParams.push("center=" + map.getCenter().lat().toFixed(6) + "," + map.getCenter().lng().toFixed(6));
   extraParams.push("zoom=" + map.getZoom());
   addImg(baseUrl + "&" + extraParams.join("&"), "printMap");
}

function addImg(url, id) {
 var img = document.createElement("img");
 img.src = url;
 document.getElementById(id).innerHTML = "";
 document.getElementById(id).appendChild(img);
}