On pages where a list of thumbnails appear below a larger image where normally you can click on a thumbnail and the larger image shows that thumbnail's image. Not a hard click or a page loading, but the image just switches quietly. No longer works for me. Yet if I open the same page in Chrome or even IE7 or 6 it works fine.
Any ideas as to what could be causing this? I know I haven't given much to work with here but I'm hoping that this is a familiar problem to someone here who knows the kind of coding that make menus and image-switchers work like they do.