Meta Keywords showing on Image Hover

I have three people using IE8 that are telling me that when they hover over an image, it shows the keywords for the page in the little tool-tip text box.

I cannot replicate the error as I use IE9, but I’ve had a couple other people look with IE8. Still can’t replicate.

Regardless, we have a meta title & description set on each page, there’s no reason I can think of for meta keywords to replace alt text on hover, but they’ve asked me to “fix” it.

An example page would be:

http://www.bellisimadogs.com/item_420/PetzLife-Oral-Care-SPRAY-REFILL--8-ounce.htm

The image graphic shows the alt text for me, but it shows page keywords for others.

ANY ideas?? Thanks!!

Nevermind - resolved, apparently my shopping cart script has a setting somewhere to use keywords in place of the alt tag. Odd