function chkFormular2 () {

    if (document.newsletter.email.value  == "E-Mail-Adresse") {

    alert("Alstublieft invullen: E-Mail!");

    document.newsletter.email.focus();

    return false;

  }

  if (document.newsletter.email.value.indexOf("@") == -1) {

    alert("Alstublieft invullen: E-Mail!");

    document.newsletter.email.focus();

    return false;

  }

  if (document.newsletter.email.value.indexOf(".") == -1) {

    alert("Alstublieft invullen: E-Mail!");

    document.newsletter.email.focus();

    return false;

  }

}