Online image on user detail

Apologies if already asked, but have trawled through the forum and my CP for this prior to posting query ...

Some forums have a diagonal 'online' flag over the users details in a thread, this forum being one of them. I can't find this option to enable, only the 'show online status flag, but this doesn't ammend for the diagonal banner I mention; is it skin or version dependent?

Thanks in advance ..

The diagonally Online button is only available in phpBB 3. If you switch to phpBB 3 and choose a theme like Prosilver the Online button will be displayed just like on this forum.

That explains it, I use BB2.
Many thanks for the response.

You're welcome

Thanks lucky, i was having problems with that on other forums on other sites i made, but now i use this.