function redirect(op)
{
  document.forms.redirector.operation.value = op;
  if(op=='users_newsletter') document.forms.redirector.email.value = document.forms.newsletter.email.value;
  document.forms.redirector.submit();
}

function changeLanguage(lang)
{
  document.forms.redirector.language.value = lang;
  document.forms.redirector.submit();
}