I use portable Opera for my DH stuff and Panel is flawless.
Might just fire up FF17 and try this out.
Back. The script seems to work as intended here, at least visually. Win8 FF17.
Were you talking about the script functionality within Panel, or is it a case that no matter what /subdir/ you put in initially it creates the path as /user/sub.domain.com regardless of your initial settings, requiring that you need to log back in and set it again?
Side note: I couldn't log in to Panel using my abcdef00 id -- had to use my email. Weird.