function valider_email(email) {
	var verif = RegExp("^([a-zA-Z0-9_-])+([.]?[a-zA-Z0-9_-]{1,})*@([a-zA-Z0-9-_]{2,}[.])+[a-zA-Z]{2,4}$");
	return verif.exec(email);
}

function valider_date(date) {
	var verif = RegExp("^([0-9]{2})(-[0-9]{2})(-[0-9]{4})$");
	return verif.exec(date);
}

function valider_heure(heure) {
	var verif = RegExp("^([0-9]{2})(:[0-9]{2})(:[0-9]{2})$");
	return verif.test(heure);
}