Hello, Karl already gave you clean solution that will surely work, but I can't resist to give you solution that might be more suitable for your needs. I presume that you don't want hover effect on the first row because it contains table header (field names for columns). If that's the fact, then you just need to replace first row tags from <tr>...</tr> into <th>...</th> and style it in your css whatever you want. TH tag is made just for that, and if you don't specify style it will usually render in bold, with everything else just as normal TR. That way your script can be simpler, and if scripts fail or are not enabled in visitor browser it will still show the slight difference. Last but not the least, search engines will understand your content better and you will get better page rank ;-)
I know this is not what you asked for, but I got the impression that this is just what you need.
