// JavaScript Document
function Form_Validator(Kontakt_en)
{

  if (Kontakt_en.Vorname.value == "")
  {
    alert("Error: Please enter these details: your first name");
    Kontakt_en.Vorname.focus();
    return (false);
  }

  if (Kontakt_en.Nachname.value == "")
  {
    alert("Error: Please enter these details: your last name");
    Kontakt_en.Nachname.focus();
    return (false);
  }
  
  
  if (Kontakt_en.EMail.value == "")
  {
    alert("Error: Please enter these details: email address");
    Kontakt_en.EMail.focus();
    return (false);
  }
  
  if (Kontakt_en.PLZ.value == "")
  {
    alert("Error: Please enter these details: your postcode");
    Kontakt_en.PLZ.focus();
    return (false);
  }
  

  if (Kontakt_en.Stadt.value == "")
  {
    alert("Error: Please enter these details: your town");
    Kontakt_en.Stadt.focus();
    return (false);
  }
  
    if (Kontakt_en.Telefon.value == "")
  {
    alert("Error: Please enter these details: telephone number");
    Kontakt_en.Telefon.focus();
    return (false);
  }

  return (true);
}