function chkFormular () {
   if (document.Formular.leer.value !="") {
    alert("Leave this field free!");
    document.Formular.leer.focus();
    return false;
  }

  if (document.Formular.name.value == "") {
    alert("name missing!");
    document.Formular.name.focus();
    return false;
  }

  if (document.Formular.email.value == "") {
    alert("Email missing");
    document.Formular.email.focus();
    return false;
  }
  if (document.Formular.email.value.indexOf("@") == -1) {
    alert("check your email address!");
    document.Formular.email.focus();
    return false;
  }


}