function validAnnee(sender, args) {
	//Vérification de la saisie de l'annee
	var f = document.forms['HNForm'];
	strYear = f.year.options[f.year.selectedIndex].value;
	
	if (strYear == 0)
		args.IsValid = false;
	if (strYear <= 1990) {
		if( typeof(f.email) != "undefined" ) {
			document.forms['HNForm'].email.disabled = false;
			document.getElementById("titredemandemail").disabled = false;
		}
		if( typeof(f.cochemail1) != "undefined") {
			f.cochemail1.disabled = false;
			f.cochemail1.parentNode.disabled = false;
			f.cochemail2.disabled = false;
			f.cochemail2.parentNode.disabled = false;
		}
	} else {
		if( typeof(f.email) != "undefined" ) {
			f.email.disabled = true;
			f.email.value = "";
			document.getElementById("titredemandemail").disabled = true;
		}
		if( typeof(f.cochemail1) != "undefined") {
			f.cochemail1.disabled = true;
			f.cochemail1.checked = "";
			f.cochemail1.parentNode.disabled = true;
			f.cochemail2.disabled = true;
			f.cochemail2.checked = "";
			f.cochemail2.parentNode.disabled = true;
		}
	}
}
function validEmail(sender, args) {
	//Vérification de la saisie de l'email si une des 2 cases a été cochée
	form=document.forms[0];
	
	if ((form.cochemail1.checked) || (form.cochemail2.checked)) {
		if (form.email.value == "") {
			args.IsValid = false;
		}
	}
	
	//adresse bien formée
	if (form.email.value != "") {
		var reg = /^[\w_.~-]+@[\w][\w.\-]*[\w]\.[\w][\w.]*[a-zA-Z]$/;
			
		if (reg.test(form.email.value)) {
			args.IsValid = true;
		}
		else {
			args.IsValid = false;
		}
	}
}