Typically, when FP adds thumbnails to an image, it is simply creating a
thumbnail that links to the image. There aren't really any effects that you
could do when showing just a plain image. You could instead link it to a
page and add some transition effects and place the linked image in that page
and change the link on the thumbnail to point to the new page. Basically
though, there aren't going to be many good effects like this that you can do
with an image simply because of the limitations of the web and the variety
of web browsers out there. Some sites do this by having an image
photogallery in a flash animation, where they can do more, but creating with
Flash can be cost prohibitive, not to mention it comes with a good learning
curve for all it's features.
Hope this helps,
Mark Fitzpatrick
Microsoft MVP _ FrontPage