function ValiderFormulaire(url) {

    var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
    var address = document.getElementById('2_2').value;
    var bValide = true;
    if (reg.test(address) == false) {
        document.getElementById('2_2').value = 'Email non valide';
        bValide = false;
    }
    if (document.getElementById('1_1').value == '') {
        document.getElementById('1_1').value = 'Champ obligatoire';
        bValide = false;
    }
    if (document.getElementById('2_2').value == '') {
        document.getElementById('2_2').value = 'Champ obligatoire';
        bValide = false;
    }
    if (bValide) {
        document.getElementById('form').action = url;
        document.getElementById('form').submit();
    }
}