Paginate Pages

<?php
$pagelist = get_pages("child_of=".$post->post_parent."&parent=".$post->post_parent."&sort_column=menu_order&sort_order=asc");
$pages = array();
foreach ($pagelist as $page) {
   $pages[] += $page->ID; 
}
$current = array_search($post->ID, $pages);
$prevID = $pages[$current-1];
$nextID = $pages[$current+1];

if (!empty($prevID) || !empty($nextID)) { ?>
<div class="navigation-wrapper">
	<div class="navigation">
		<?php if (!empty($prevID)) { ?>
		<div class="cell cell-previous">
			<a href="<?php echo get_permalink($prevID); ?>" title="<?php echo get_the_title($prevID); ?>">
				Précédent<br>
				<strong><?php echo get_the_title($prevID); ?></strong>
			</a>
		</div>
		<?php } ?>
		<?php if (!empty($nextID)) { ?>
		<div class="cell cell-next">
			<a href="<?php echo get_permalink($nextID); ?>" title="<?php echo get_the_title($nextID); ?>">
				Suivant<br>
				<strong><?php echo get_the_title($nextID); ?></strong>
			</a>
		</div>
		<?php } ?>
	</div>
</div>