Drupal 7 main menu filtering
I've recently created a site but have run into a problem with the navigation bar. My problem is I want to be able to filter out displaying links.
This is because part of my site makes use of books. As part of the site allows the user a choice of 4 links which link to 4 different books and they can progress through those books as you would expect.
Currently, a link to each page is shown at the bottom of the page. What I would like to do is filter these links so it only shows rel event links to a user, e.g. if they are on book1 it shouldn't show links to book 2 and 3 and their children pages as it currently does.