When you mouse over an image, as defined in the script, an "alt" type box is displayed and remains visible until you mouseout.
It works much like the mouse over "alt" that is in an image tag <img src='images/blah.gif' alt='Put your text here'>, but the main differences are, the pop up box can be edited so the background color can be changed, font, border, etc. all can be edited.
Can someone point me to such an animal as I describe? I have searched many, many java sites but have been unable to find this particular script, though I know I have seen it before.