This has helped me out a lot.
I'm having 2 problems, maybe you've run into it?
My tables don't have a inner border anymore. All the rows look like one cell now. Also, if I have say 4 columns, if I use thead, the first column uses as much space as possible even though it's only set to width of 5% and the other 3 are squished.
Any ideas?
EDIT:
I figured out part of the problem.
$alt1_background and $alt2_background aren't registered in the example so I wasn't getting the background colors. For the width I just set the class in the TR instead of TD. Now I just need to figure out what is making my logo image have a border