From the Original Poster...
I FOUND THE SOLUTION - totally by accident.
Firefox started throwing SSL errors on secure web pages. Lots of searching the web led me to "just re-install it" so I did. That did not help my SSL problem. So I did an uninstall (why can't we just say "remove?") and a fresh install of Firefox. And my SSL problem went away. AND WHEN I VISITED ITKE WITH MY NEWLY INSTALLED FIREFOX, LO AND BEHOLD, EVERYTHING HERE WORKS LIKE IT USED TO.
I've been a programmer (and analyst and software guy and DBA) since 1974 and I just do not understand why we tolerate this sort of behaviour with PCs and PC programs. If it doesn't work, reboot. If it still doesn't work, reinstall the software or even the OS. Good Grief. If this was tolerated on a mainframe, no one would use a computer. Oh my, this CICS program just quit working. I guess I better IPL the system out from under thousands of users. Oh, that did not fix the problem. I guess I will just reinstall CICS, and maybe DB2 and IMS for good measure. </end rant>
A possibility to consider….courtesy of Bob Rankin:
Firefox has always maintained that pages should render according to the standards established by the World Wide Web Consortium (W3C). But Microsoft has long been castigated by the Web community for not adhering to those standards. So as long as Microsoft goes its own way, there will always be Web pages that look great in IE and horrible in other browsers, including Firefox. There is a workaround for this, however.
The IE View addon for Firefox will launch IE and display a Microsoftian page in it at the click of a mouse key. You can also tell IE View to always display a given page or all pages from a given Web site in IE. So when something doesn’t look or work right in Firefox, try it with IE View and IE 8.