The machines are running an older version of Mozilla (1.2), and sometime during this semester all of a sudden the Javascript navigation menu stopped working, as in clicking on that little house ...

Pop-up menus can also streamline your users’ interactions, allowing them to quickly jump to the pages they need. Say you’re developing a nutrition Web site illustrating the Food Guide Pyramid.

What does popup menu actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.