// $Id$
/**
 * Hide or show navigational elements within books.
 */
if (Drupal.jsEnabled) {
  function book_nav_tweaks_nav_on(){
    $("div.book-navigation div.page-links").fadeIn("slow");
  }
  function book_nav_tweaks_nav_off(){
    $("div.book-navigation div.page-links").hide();
  }
  function book_nav_tweaks_outline_off(){
    $("div.book-navigation ul.menu").hide();
  }
  function book_nav_tweaks_outline_on(){
    $("div.book-navigation ul.menu").fadeIn("slow");
  }
  function book_nav_tweaks_up_nav_off(){
    $("div.book-navigation a.page-up").hide();
  }
  function book_nav_tweaks_up_nav_on(){
    $("div.book-navigation a.page-up").fadeIn("slow");
  }
  $(document).ready(function(){
    // Hide the navigational elements.
    book_nav_tweaks_nav_off();
    book_nav_tweaks_outline_off();
    book_nav_tweaks_up_nav_off();
  });
}