> Hi Brian - did you manage to pack up this code? I am looking for 
> something very similar but I am not very good with javascript.

Sorry. 

I didn't get around to extracting relevant public bits from the 
internal data-driven system I worked it up on, and now I've left the 
company I no longer have access to the test systems or database.

Another response to the original call seemed to give a more elegant 
solution than mine - though I admit I haven't tried it out.

If you're sure mine is what you want, and if I can make time to recreate 
the data and demo, I'll post it.

Brian
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