Hey Alex, That's a javascript mouseover applied to the <td> cell... as far as I know... I just got back from a "vacation" and haven't had time to download and look at the code(56k rules!). But, off the top of my head I can't think of another way to do it(not entirely true, it can be done i...
As it stands right now 141 has a manual update. This may change in the future if the number of changes increases to too high a number, but right now every move that is made is being added to an update file.