xpointer support?

According to https://developer.mozilla.org/en/XML_in_Mozilla, Mozilla 
supports some XPointer schemes like the element scheme and some API too.
A test case linked to is 
https://bug182323.bugzilla.mozilla.org/attachment.cgi?id=119333. When I 
try links like 
https://bug182323.bugzilla.mozilla.org/attachment.cgi?id=119333#element%28/1/2%29 
with Firefox 3.6 (Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; 
rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13 ( .NET CLR 3.5.30729; 
.NET4.0E)) the browser does not scroll to the element in the xpointer. 
Hitting any of the "JS" butttons on the test case displays an error

[Exception... "Component returned failure code: 0x80040154 
(NS_ERROR_FACTORY_NOT_REGISTERED) [nsIDOMXMLDocument.evaluateXPointer]" 
  nsresult: "0x80040154 (NS_ERROR_FACTORY_NOT_REGISTERED)"  location: 
"JS frame :: 
https://bug182323.bugzilla.mozilla.org/attachment.cgi?id=119333 :: xp :: 
line 56"  data: no]

Has the xpointer stuff been removed or abandonded?

-- 

	Martin Honnen
	http://msmvps.com/blogs/martin_honnen/