This is an addon for all rollover scripts (SimpleRollovers, AnimatedRollovers,
FadingRollovers, Image Zoom, Image Fader). This adds an extra
"Click" method for the rollover that allows the click
button to remain on until another button is clicked. To use the
button group all you have to di is include the file "JSFX_ButtonGroup.js"
after you include the rollover ".js" file. See the demos