function sendTellafriend() {
  new Ajax.Updater('tellafriend-container', $('tellafriendform').action, {
    evalScripts: true,
    parameters: {
      from: $('from').value,
      mailfrom: $('mailfrom').value,
      to: $('to').value,
      mailto: $('mailto').value,
      message: $('message').value,
      ct: $('ct').value,
      url: $('url').value
    }
  });
}