<!--
function validate_form() {
  validity = true; // assume valid
  if (!check_email(document.form.email.value))
        { validity = false; alert('Votre adresse eMail est invalide. L\'adresse require un @ et un .  '); }
 
 }

function check_empty(text) {
  return (text.length > 0); // wann eidel dann false
}

function check_email(address) {
  if ((address == "")
    || (address.indexOf ('@') == -1)
    || (address.indexOf ('.') == -1))
      return false;
  return true;
}
// -->