[jQuery] jQuery form plugin: action restrictions?

[jQuery] jQuery form plugin: action restrictions?


I started with the "html" example at Mike Alsup's page:
http://malsup.com/jquery/form/#sample6
That worked fine.
I then tried to change the form action from html-echo.php to my own
site's function library:
"index.php?fnc=ajaxComments"
then ajaxForm breaks on me. the page goes to white/blank, and the
browser (IE) says in the corner:
"downloading data javascript:""..."
Is it known why I can't use functions like this? why does it have to
be directly in another file like "html-echo.php?"
thanks
Jason