function __autoload($name) {

    $file_name = str_replace('_', '/', $name) . '.php';
    if (substr($file_name, 0, 15) == 'FeedAggregator/') {
        include 'lib/' . substr($file_name, 15);
    } else {
        include $file_name;
    }

    if (! class_exists($name, FALSE) and ! interface_exists($name, FALSE)) {
        trigger_error('Unable to load class/interface ' . $name, E_USER_WARNING);
    }

}