Javascriptkit.com

Does any one know how to add a caption to the enlarged image, using the Plus Size Image Viewer from javascriptkit?

http://www.javascriptkit.com/script/script2/plusimageviewer.shtml

Despite the similar sounding names, Java is not the same as Javascript.
Moving from Java forum to Javascript forum.

Note that I am only doing this because of the site name 'javascriptkit.com'. Images can otherwise be handled normally with java as well.