I just changed our pages to use hover buttons in place of jpg files which had to be created individually in a graphics program, hauled over to the web, linked, etc., a real pain. Hover buttons can be easily edited and they load a bit faster than the old method. The hover buttons act as navigation tools in an include page so they get on nearly every page.
Problem is reports from SOME users that suddenly the 'navigation buttons have disappeared.' I've had them clear cache on their local machines, even reboot, but to no avail. I thought it might be some sort of security setting, but I sure can't find it. I don't understand the inconsistency since it works on literally hundreds of in-house machines. Seems to affect users over the web rather than local in-house.
I'm stumped. Thanks for any help.