Alternating TCAT ?

[TrainHealthy]

HI,

I was wondering if it's possible to have alternating table catgories. My board is TrainHealthy (http://trainhealthy.com/forum) and I have got this at the moment by using a conditional and $threadid. I want to do it this way so if any forums are added, it automatally changes rather than me having to change the template code.

Thanks
xx