function VerifMail(form) {
  var Ok = true;
  var sMail = form.value;
  if (sMail == "") Ok = false;
  if (sMail.indexOf('@')  == -1) Ok = false;
  if (sMail.indexOf('.') == -1) Ok = false;
  if (!Ok) {
    alert('Adresse Email invalide...\nDoit être de la forme : nom@serveur.com ');
	 form.focus();
  }
  return Ok;
}

function VerifText(form,message) {
  var Ok = true;
  var ChampText = form.value;

  if (ChampText == "") Ok = false;
  if (!Ok) {
    var MessageAlert='Le champ '+message+' est obligatoire';
    alert(MessageAlert);
	 form.focus();
  }
  return Ok;
}


function VerifRadio(form,message) {
var Ok=false;
for (var i=0; i<form.length; i++) {
	if (form[i].checked) Ok=true;
}
if (Ok==false){
	var MessageAlert='Merci de nous indiquer '+message;
	alert(MessageAlert)}

return Ok;

}