function check() {
    var frm = document.frm;
    if (frm.nom.value == '') {
        alert('Veuillez renseigner votre nom');
        frm.nom.focus();
        return;
    }
    if (frm.email.value == '') {
        alert('Veuillez renseigner votre adresse e-mail');
        frm.email.focus();
        return;
    }
    if (!verif(frm.email.value))
    {
        alert('Veuillez vérifier le format de votre adresse e-mail');
        frm.email.focus();
        return;
    }
    frm.submit();
}

function verif(email) { // vérif validité email par REGEXP
    var reg = /^[a-z0-9._-]+@[a-z0-9.-]{2,}[.][a-z]{2,3}$/
    return (reg.exec(email) != null)
}

function MM_swapImgRestore() { //v3.0
    var i, x, a = document.MM_sr; for (i = 0; a && i < a.length && (x = a[i]) && x.oSrc; i++) x.src = x.oSrc;
}

function MM_swapImage() { //v3.0
    var i, j = 0, x, a = MM_swapImage.arguments; document.MM_sr = new Array; for (i = 0; i < (a.length - 2); i += 3)
        if ((x = MM_findObj(a[i])) != null) { document.MM_sr[j++] = x; if (!x.oSrc) x.oSrc = x.src; x.src = a[i + 2]; }
}

function MM_findObj(n, d) { //v4.01
    var p, i, x; if (!d) d = document; if ((p = n.indexOf("?")) > 0 && parent.frames.length) {
        d = parent.frames[n.substring(p + 1)].document; n = n.substring(0, p);
    }
    if (!(x = d[n]) && d.all) x = d.all[n]; for (i = 0; !x && i < d.forms.length; i++) x = d.forms[i][n];
    for (i = 0; !x && d.layers && i < d.layers.length; i++) x = MM_findObj(n, d.layers[i].document);
    if (!x && d.getElementById) x = d.getElementById(n); return x;
}

function MM_openBrWindow(theURL, winName, features) { //v2.0
    window.open(theURL, winName, features);
}