Below is the rendered markup:
| South | Park | Al |
|---|---|---|
| Light | Row | Here |
| Dark | Row | Here |
Problem
Bugs in the following browsers:
-
Safari 3.2.1 (5525.27.1), OS X

-
IE7 7.0.6001.1800, Vista 32-bit

-
Google Chrome 1.0.154.36, Vista 32-bit

Solution (partial to IE7 only)
With tr.headrow having "position:relative" and td/th having "background-image:none"
| South | Park | Al |
|---|---|---|
| Light | Row | Here |
| Dark | Row | Here |
The above workaround only works for IE7. More info via this post.
Or using "expression"… More info via this post.
| South | Park | Al |
|---|---|---|
| Light | Row | Here |
| Dark | Row | Here |
Note: The above workaround seems to weird effect on the y-position of the image in IE7.
There is also a thread at Snook's site here (same partial solution as the first)