function CorrectEmailaddress(SubscriberForm) {
    if (SubscriberForm.pf_Email.value.length > 255) {
        alert("Ange som mest 255 tecken i e-post adress.");
        SubscriberForm.pf_Email.focus();
        return (false);
    }
    if (SubscriberForm.pf_Email.value == "") {
        alert("Ange värdet för e-post adress.");
        SubscriberForm.pf_Email.focus();
        return (false);
    }
    if (SubscriberForm.pf_Email.value.length < 7) {
        alert("Ange minst 7 tecken i e-post adress.");
        SubscriberForm.pf_Email.focus();
        return (false);
    }
    pf_Email = SubscriberForm.pf_Email.value
    at = pf_Email.indexOf("@");
    lastat = pf_Email.lastIndexOf("@");
    dot = pf_Email.lastIndexOf(".");
    if (at < 1 || at != lastat || dot < at) {
        alert("Din e-postadress är inte korrekt. Försök igen.");
        return false;
    } 
}