Hi -
Thanks the suggestion. Attached is the thumbnail file - I think you have nailed it although when I tried to implement your fix, the mouseover enlargement worked but no large image appeared.
The problem, I think, based on your analysis, is that I have include the description in the tooltip thumbnail_bit.html file and some of the descriptions have a single apostrophe in the informal descriptions, such as "I'm wearing a t-shirt ..." When I went back and deleted the apostrophes, the image did not enlarge on mouseover. Not sure if this is due to the 'big' file not updating when the image is edited. (since it is the original image that enlarges on mouseover)
What do you think?
Thanks for taking the time to look at this.
Brian