'ASC',
'orderby' => 'menu_order',
'post_type' => 'nav_menu_item',
'post_status' => 'publish',
'output' => 'ARRAY_A',
'output_key' => 'menu_order',
'nopaging' => true,
'update_post_term_cache' => false );
$menu_items = wp_get_nav_menu_items( "Navigation", $args );
if($menu_items)
{
foreach($menu_items as $key => $menu_item )
{
$title = $menu_item->title;
$url = $menu_item->url;
$object_id = $menu_item->object_id;
$menu_order = $menu_item->menu_order;
if ($object_id==$post->ID)
{
$order = $menu_item->menu_order-1;//reduce the order by 1 as we have removed the custom menuitem
$prev_url = $menu_items[$order-1]->url;
if($prev_url=='#')
{
$prev_title = $menu_items[$order-2]->title;
$prev_url = $menu_items[$order-2]->url;
}
else
{
$prev_url = $menu_items[$order-1]->url;
$prev_title = $menu_items[$order-1]->title;
}
if ($order==count($menu_items))
{
$next_url = '';
$next_title = '';
}
else
{
$next_url = $menu_items[$order+1]->url;
if ($next_url=='#')
{
$next_url = $menu_items[$order+2]->url;
$next_title = $menu_items[$order+2]->title;
}
else
{
$next_url = $menu_items[$order+1]->url;
$next_title = $menu_items[$order+1]->title;
}
}
}
}
}
echo $prev_title . " | " . $next_title;
?>