[Piwik-hackers] piwik tracking on ajax requests?

[Echo Chargen]

Hello -
Piwik is great.  I love the api.
I'm trying to use piwik to track ajax requests on my site.  I use the
Prototype javascript library to handle the ajax requests with the
Ajax.updater functionality (updates a div on the page).  If I include
the piwik tracking code in the html returned by the ajax request, the
response spills out of the div I'm trying to update and I end up with
a white page with the img src of the piwik.php request in the source
like:

<img src="http://stats.oneclickteam.com/piwik/piwik.php?url=http%3A%2F%2Fwww.talkaboutfree.com%2Fjer&action_name=Lead%20Form%20Show&idsite=18&res=1280x1024&col=32&h=16&m=45&s=12&fla=1&dir=0&qt=1&realp=0&pdf=1&wma=1&java=1&cookie=1&title=talkaboutfree.com&urlref="
alt="Piwik" style="border:0" />

The same happens when I call the piwik_log() function directly from
the javascript I'm using to call the Ajax.updater request.
What's interesting is that both ways result in the stats being updated
for the action as desired, but the request response just gets messed
up.

I realize this is probably prototype.js related, but can anyone
comment on how they are using piwik tracking on ajax requests?
Perhaps in conjunction with jquery or other javascript framework
libraries?

Thanks for any response,
Jeremy