protected function _moveImage($sSource, $sTarget)
    {
        if (!is_dir(dirname($sTarget))) {
            mkdir(dirname($sTarget), 0744, true);
        }

        $blDone = true;
        if ($sSource !== $sTarget) {
            $blDone = move_uploaded_file($sSource, $sTarget);
        }

        if ($blDone) {
            $blDone = @chmod($sTarget, 0644);
        }

        return $blDone;
    }