private function _getSavedData($aDefaultValues)
{
$_aSavedData = $this->getAsArray($this->callBack($this->aCallbacks['saved_data'], array($aDefaultValues))) + $aDefaultValues;
$_aLastInputs = $this->getElement($_GET, 'field_errors') || isset($_GET['confirmation']) ? $this->oLastInputs->get() : array();
return $_aLastInputs + $_aSavedData;
}