if(!dynamic_sidebar('sidebar_primary')) {
/**
* The primary sidebar widget area. Manage the widgets from: wp-admin -> Appearance -> Widgets
*/
$theme->hook('sidebar_primary');
}
$theme->hook("sidebar_primary_after");
?>

if(!dynamic_sidebar('sidebar_secondary')) {
/**
* The secondary sidebar widget area. Manage the widgets from: wp-admin -> Appearance -> Widgets
*/
$theme->hook('sidebar_secondary');
}
?>