Yet another method of displaying a navigational hierarchy is the tree-view. This is familiar to users from cases such as browsing a directory structure of files and folders within a graphical operating system shell (for example, Microsoft Windows Explorer).
At the time of writing, YUI3 lacks a stable port of the TreeView widget so we will be using the TreeView widget from YUI2.
<?php require_once(dirname(__FILE__) . '/../config.php'); $PAGE->set_context(get_context_instance(CONTEXT_SYSTEM)); $PAGE->set_url('/cook/nav_tree.php'); $PAGE->requires->js('/cook/nav_tree.js', true); echo $OUTPUT->header(); ?> <div id="treeContainer"> ...