Quote:
Originally Posted by Chris Gwynne
It's a cool idea. But I don't see why you'd want this? 
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Think of it this way, if you want to create a background image for part of the postbit with CSS positioning so it doesn't repeat (say, a corner, or center image) you can use this hack so the background seams into both FirstAlt and SecondAlt colors. It just gives a little more flexibility.
Great, simple, hack btw.