The sitemap for atlantic.edu has grown quite a bit over the years, and we were looking for a way to make it more manageable while still being accessible. The YUI Treeview version 2.6.0 supports progressive enhancement, focus and keyboard navigation. Which seemed a perfect fit for what was needed.
Implementing it couldn’t of been any easier too. Just include the necessary source files. Then just create and render the Treeview.
tree1 = new YAHOO.widget.TreeView("markup"); tree1.render();