function empty_form(form)
{
  form.cognome.value = '';
  form.nome.value = '';	
  form.email.value = '';
  form.telefono.value = '';	
  form.indirizzo.value = '';		
  form.richieste.value = '';
  form.condizioni.checked = false;
  form.newsletter.checked = false;	
	form['op-type'].value = 'update';
	form.submit();
}