Add nonexisting pages to navigation
Try the filter ‘page_link’, and manipulate the url if id is over $wpfbId http://codex.wordpress.org/Plugin_API/Filter_Reference applied to the calculated page URL by the get_page_link function. Filter function arguments: URL, page ID. Note that there is also an internal filter called _get_page_link that can be used to filter the URLS of pages that are not designated as … Read more