changing color of all elements within a table row

I've got a table with two columns and six rows, each column and each row is a different color (twelve unique classes alltogether.) These rows contain text fields to display dynamic data from a script, recalculated when a new baseline row is selected. The text fields have been colored and unbordered to appear invisible in the table. I'll be indicating the selected row by another method so I'm not too concerned with that right now. But what I need to do is highlight the rows onMouseOver to indicate that they are selectable.

It seems simple enough, just change the classNames of all the elements in the row whenever any of them is moused over. But with so many different objects to change, every single element winds up with a long string of script, which makes the page code sloppy and harder to maintain. I need to group the elements and apply my color change to the entire group.

I worked out one way to do it, by changing the background-color of the class (as opposed to changing the class of the object) but then I wound up with duplicate functions renamed for each row, and referring to the classes by their number in the array makes future modifications of the stylesheet a pain (document.styleSheets[0].rules[1].backgroundColor) and since each function has to change FOUR classes, there has to be a better way.

So now I'm back to trying to change the classNames of the elements. I want to combine it all into a single function, or at most one function for each row (six rows total) so all I have to do is call that function on each element and it'll change all the others. Additionally, onMouseOut needs to change them all back to what they were, so probably two functions are needed.

The objects to change will probably need to be grouped into an array, and the function will just apply the color change to the entire array, but I don't know how to go about doing that. Ideally I want it to go something like this:

onMouseOver="changeRow('row1')" onMouseOut="resetRow('row2')"

But that may be too simple to be realistic. This has been driving me nuts for three days and I'm starting to run out of ideas. One of my earlier versions is viewable at http://focalcurve.com/dev/testtable2.html (text fields are only in one row) to give you an idea of where I'm going.

I just signed up on EE so I don't have a lot of points to give, though I took the survey and scored an additional 200. If someone out there can solve my problem, I will gleefully hand over the full 275 points along with many truckloads of gratitute.