displaying time left on a timer in the info bar

I've got a timer and I'd like to display whatever time is left on the timer on the info bar. I _think_ this should be possible, given that you can get the status of lots of other things using scripts. Don't know exactly how to do it, though, so any pointers are appreciated! :)

I was about to answer that, but thought I had done it before. See:

http://www.gammon.com.au/forum/bbshowpost.php?bbsubject_id=4598

Strangely enough, it was in answer to your question, Feantur.

.. *cough*. Sorry. Looks like I forgot to pick up the answer last time. :)

It works, too, so thanks again!