Hi DJ,
Perhaps I'm being a bit dense, but I fail to see how to access the support ticket that you created for me.
However, I think it's a moot point on this current issue, since the problem is solved! I disabled the BitDefender A-V Shield Script Monitoring, and the problem with submitting the form went away! I didn't really need it, anyway, because I've used the "NoScript" add-on for Firefox for a long time now, and am very happy with it. After getting BitDefender and noting that it contained a HTTP-script monitor, I turned off "NoScript," so as not to have both of them running. Now that I know that BitDefender's HTTP-script monitor can cause problems with website operation, I've gone back to "NoScript",. and disabled BitDefender's script monitoring. I was close to doing that, anyway, because I much prefer NoScript's method of notification and asking permission for scripts. BitDefender's notifications and permission requests are a bit obtrusive.
Thank you so very much for your responses to my posts, and for your valuable assistance and insights.
Bob Hakes