Continuation of http://forum.virtuemart.net/index.php?topic=32804.msg98241#msg98241
Joomla 1.0.13
VirtueMart 1.1 r1035
Child item stock notification button not changing from 'Add to Cart' to 'Notify Me' in FireFox, it is OK in Internet Explorer.
As suggested by Pisu changing line 17 of root\components\com_virtuemart\themes\default\theme.js
from
method: 'post',
to
method: 'get',
fixes this problem, however not sure if the change would cause other issues, respond requested.
Solved without changing any code, it was due to mod_security being enabled on my server.
A permanent code base fix is needed, as not everyone is able to disable mod_security on their server.
For now marking is resolved.