Error when dynamically loading menu items in block

This sort of works. If i install HEAD and JSTools, I can get parent categories to display child categories in a DHTML list. However, I cannot get child nodes to display unless I actively click on the category. I'll try to do a little debugging, but I feel like I'm in over my head.

Here's the error message:

arg has no properties
http://nfldmn.bpsi.net/misc/jquery.js
Line 2

([null])jquery.js (line 2)
e([null], true, 1, function())jquery.js (line 2)
e()jquery.js (line 2)
success(Object status=true)activemenu.js (line 54)
e(undefined)

Thoughts?

I'm using Firefox, though it appears to be a cross-platform issue. I'm going to try applying the JSTools patch listed to see if it fixes the issue; I'll let you know what happens.

Still no worky. However, I did a little poking about (I love FireBug) and discovered more specific symptoms.

Let's say I have a vocabulary with a few terms. The first term has two sub-terms, and each sub-term has two nodes apiece. This Taxonomy is displayed in a block:

Term 1
- Sub-Term A
- - Node 1
- - Node 2
- Sub-Term B
- - Node 3
- - Node 4
Term 2

When I click on Term 1, the browser POSTs

taxonomy/term/1

the server returns

{ "status": true, "content": "\x3cul class=\"menu\"\x3e\n\x3cli class=\"collapsed\"\x3e\x3ca href=\"/taxonomy/term/1\" title=\"View this section\"... }

and Sub-Term A and Sub-Term B are displayed.

When I click on Sub-Term A, the browser POSTs

taxonomy/term/8

but the server returns

{ "status": true, "content": null }

and all of the related JavaScript errors out.

Thoughts?

I think the problem might lie in the taxonomy_context_menu_tree() function. My thought is that the first time Activemenu makes a hook_activemenu call for the Taxonomy Context block, everything gets parsed properly. However, on the second call (for sub-terms and children), something is making taxonomy_context_menu_tree() think that it doesn't have a proper context, and therefore return "content: null".

Am I just making conjecture here, or does this make sense? :)

I found it.

In the taxonomy_context_menu_tree() function,

$terms = $tid ? taxonomy_get_children($tid, $vid) : taxonomy_get_tree($vid, 0, -1, 1);

returns the tree proper when $tid = FALSE, but returns NULL for children when $tid = TRUE.

When we go to assemble the menu, and evaluate if ($terms), it evaluates to FALSE and NULL is returned as the function's output. Hence the error.

My question is this: Why does taxonomy_get_children() puke when run by the activemenu code, but work properly when run the old-fashioned way?

Any thoughts? I've tried slogging though this without any luck.