/***************************************************************************
* Requete de récupération des villes associées à un code postal
***************************************************************************/
function response_postcode(httpRequest) 
{
  if (httpRequest.readyState == 4 && httpRequest.status == 200) 
  {
     // alert(httpRequest.responseText);
     document.getElementById('id_liste_ville').innerHTML = httpRequest.responseText ; 
  }
}
function query_postcode( token) 
{
	var qid = 100;
	var qparam = document.getElementById('id_code_postal').value ; 
	var str_url = 'serveur_ajax.php?qid=' + qid + '&token=' + token + '&qparam=' + qparam  ; 
	
  var httpRequest = getRequester();
  if (!httpRequest) 
  {
      alert('Abandon :( Impossible de créer une instance XMLHTTP');
      return false;
  }
  httpRequest.onreadystatechange = function() { response_postcode(httpRequest); };
  httpRequest.open('GET', str_url, true);
  httpRequest.send(null);
}