function verifForm(champ) {

		var champs = champ;
		var reg = new RegExp("[,]+", "g");
		var tabchamps = champs.split(reg);
		var message = "Vous devez remplir les champs obligatoires";
		var erreur = 0;
	
		for (var i=0; i<tabchamps.length; i++) {
			
			c = "";
			cc = "";
			
			c = tabchamps[i];
			cc = "document.getElementById('"+c+"')";
			cc = eval(cc);

			if(cc.value.length == 0) {
				erreur += 1;
			}
			
		}

		if (erreur>0) {
			alert(message);
			return false;
		} else {
			return true;
		}
  }