_page_level_out?

I’m still struggling with displaying the siblings of a given page in the sidebar. I was looking at the “_page_level_out” function, wondering if that’s my key to utopia? I cant find anything about it in the codex and very little here on the baord.

I have some code I’ve found through searching that is displaying the child pages, if there are child pages. Can some one see how I might modify this to display the “child pages of the parent page, _IF_ this page has a parent”

here’s my code thus far:
<?php
$current_page = $post->ID;
$parent = 1;

while($parent) {
$page_query = $wpdb->get_row("SELECT post_name, post_parent FROM $wpdb->posts WHERE ID = '$current_page'");
$parent = $current_page = $page_query->post_parent;
if(!$parent)
$parent_name = $page_query->post_name;
}
?>

<?php global $id; // the page id

$kids = get_pages("child_of=$id");
if (count($kids) > 0) {wp_list_pages('child_of=' . $id . '&title_li=&sort_column=menu_order');}
elseif (count($kids) == 0) {wp_list_pages('child_of=' . $parent_name . '&title_li=&sort_column=menu_order');}

?>

I’ve been hacking away but nothing seems to work. please help.

Thanks,
Will