How can i integrate Yahoo Menu Ajax

[sumway]

I have download the file categories_menu_yahootreemenu_with_ajax_0-9(2).zip
and according with readme file to setup my zen cart application
but ajax doesn't work,can not show ico at menu.
why?
anyone can help me?
miss files? or other?

i check link at demo is javascript:YAHOO.widget.TreeView.getNode('yahootreemenuContent',1).toggle()

but my menu link is http://localhost/shop/index.php?main...&products_id=2



thanks