Your link does not work (404), but I am having this problem too. It works fine on both our development and testing environments, but on the production site the problem is occurring. I have the cursor change to ‘hand’ on the mouseover event of a <div>, and when this happens all of the table cell background colors flash for a second.
I will try changing ‘hand’ to ‘pointer’. If this does not work then I will simply make the <div> a link, which should work in my case, but shouldn’t be considered a ‘fix’.
