function checkForm(requestForm)
{

  if (requestForm.Nachname.value == "")
  {
    alert("Geben Sie einen Wert in das Feld \"Nachname\" ein.");
    requestForm.Nachname.focus();
    return (false);
  }

  if (requestForm.Strasse.value == "")
  {
    alert("Geben Sie einen Wert in das Feld \"Straße\" ein.");
    requestForm.Strasse.focus();
    return (false);
  }

  if (requestForm.Plz_Ort.value == "")
  {
    alert("Geben Sie einen Wert in das Feld \"Plz-Ort\" ein.");
    requestForm.Plz_Ort.focus();
    return (false);
  }

  if (requestForm.Land.value == "")
  {
    alert("Geben Sie einen Wert in das Feld \"Land\" ein.");
    requestForm.Land.focus();
    return (false);
  }

  if (requestForm.Mail.value == "")
  {
    alert("Geben Sie einen Wert in das Feld \"E-Mail\" ein.");
    requestForm.Mail.focus();
    return (false);
  }

}

function checkFormIt(requestForm)
{

  if (requestForm.Cognome.value == "")
  {
    alert("Prego inserire il cognome.");
    requestForm.Cognome.focus();
    return (false);
  }

  if (requestForm.Via.value == "")
  {
    alert("Prego inserire l'indirizzo.");
    requestForm.Via.focus();
    return (false);
  }

  if (requestForm.CAP_Localita.value == "")
  {
    alert("Prego inserire la località.");
    requestForm.CAP_Localita.focus();
    return (false);
  }

  if (requestForm.Paese.value == "")
  {
    alert("Prego inserire il paese.");
    requestForm.Paese.focus();
    return (false);
  }

  if (requestForm.Mail.value == "")
  {
    alert("Prego inserire l'indirizzo e-mail.");
    requestForm.Mail.focus();
    return (false);
  }

}

function checkFormEn(requestForm)
{

  if (requestForm.Surname.value == "")
  {
    alert("Please insert your surname.");
    requestForm.Surname.focus();
    return (false);
  }

  if (requestForm.Street.value == "")
  {
    alert("Please insert your address.");
    requestForm.Street.focus();
    return (false);
  }

  if (requestForm.Postcode_Town.value == "")
  {
    alert("Please insert the town.");
    requestForm.Postcode_Town.focus();
    return (false);
  }

  if (requestForm.Country.value == "")
  {
    alert("Please insert the country.");
    requestForm.Country.focus();
    return (false);
  }

  if (requestForm.Mail.value == "")
  {
    alert("Please insert your e-mail.");
    requestForm.Mail.focus();
    return (false);
  }

}