function        buildQs(qs, idElem)
{
        node    = document.getElementById(idElem);
        if( node != null )
        {
                if( qs != "" )  qs      += "&";
                qs      += node.name + "=" + escape(node.value);
        }
        return  qs;
}
function        buildQsRadio(qs,idElem)
{
        node    = document.getElementsByName(idElem);
        l = node.length;

        if(!l)
        {
                value = node.value;     //cas où il n'y a qu'une option
        }

        for (var i=0; i < node.length;i++)
        {
                if (node[i].checked)
                        value = node[i].value;
        }

        if( node != null  )
        {
                if( qs != "" )  qs      += "&";
                qs      += idElem + "=" + escape(value);
        }
        return  qs;

}
function chargerAjax(url,method,qs)     //      Permet de récupèrer le contenu d'une page appelée via post
{
        var req         = null;
        var retour      = "Navigateur incompatible";
        if (window.XMLHttpRequest)      req     = new XMLHttpRequest(); // Geeko
        else if (window.ActiveXObject)  req     = new ActiveXObject("Microsoft.XMLHTTP"); // IE
        if (req != null)
        {
                req.open(method,url,false);     //      Ce n'est pas de l'asynchrone
                req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
                                //      Envoie des paramètres qui m'intéressent
                req.send(qs);
                                //      Récupération du résultat
                retour  = req.responseText;
        }
                //      retour du résultat
        return  retour;
}

//---------------------------------------------------------------------------
// Vérification de la validité d'un date
//---------------------------------------------------------------------------

function chk_date(field)
{
message = "";

var checkstr = "0123456789";
var DateField = field;
var Datevalue = "";
var DateTemp = "";
var seperator = "/";
var day;
var month;
var year;
var leap = 0;
var err = 0;
var i;
   err = 0;
   DateValue = DateField.value;
if(DateValue!= "jj/mm/aaaa"){
   /* Delete all chars except 0..9 */
   for (i = 0; i < DateValue.length; i++) {
          if (checkstr.indexOf(DateValue.substr(i,1)) >= 0) {
             DateTemp = DateTemp + DateValue.substr(i,1);
          }
   }
   DateValue = DateTemp;
   /* Always change date to 8 digits - string*/
   /* if year is entered as 2-digit / always assume 20xx */
   if (DateValue.length == 6) {
      DateValue = DateValue.substr(0,4) + '20' + DateValue.substr(4,2); }
   if (DateValue.length != 8) {
      err = 19;}
   /* year is wrong if year = 0000 */
   year = DateValue.substr(4,4);
   if (year == 0) {
      err = 20;
   }
   /* Validation of month*/
   month = DateValue.substr(2,2);
   if ((month < 1) || (month > 12)) {
      err = 21;
   }
   /* Validation of day*/
   day = DateValue.substr(0,2);
   if (day < 1) {
     err = 22;
   }
   /* Validation leap-year / february / day */
   if ((year % 4 == 0) || (year % 100 == 0) || (year % 400 == 0)) {
      leap = 1;
   }
   if ((month == 2) && (leap == 1) && (day > 29)) {
      err = 23;
   }
   if ((month == 2) && (leap != 1) && (day > 28)) {
      err = 24;
   }
   /* Validation of other months */
   if ((day > 31) && ((month == "01") || (month == "03") || (month == "05") || (month == "07") || (month == "08") || (month == "10") || (month == "12"))) {
      err = 25;
   }
   if ((day > 30) && ((month == "04") || (month == "06") || (month == "09") || (month == "11"))) {
      err = 26;
   }
   /* if 00 ist entered, no error, deleting the entry */
   if ((day == 0) && (month == 0) && (year == 00)) {
      err = 0; day = ""; month = ""; year = ""; seperator = "";
   }
   /* if no error, write the completed date to Input-Field (e.g. 13.12.2001) */
   if (err == 0) {
      DateField.value = day + seperator + month + seperator + year;
   }
   /* Error-message if err != 0 */
   else {
       	message = "Date incorrecte !\n";
   }
}
else{
       	message = "Date incorrecte !\n";
	}
return message; 
}