https://jquery.com/ jQuery is a fast, small, and feature-rich JavaScript library.

Do you have this software?

No. I don't have that software.

Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac=Options) key, and then starting Firefox. A small dialog should appear. Click Start In Safe Mode (not Refresh).

Is the problem still there?

I just refreshed Firefox and problem solved.

Thanks for your time and replies.

That was very good work. Well done. Please flag your last post as Solved Problem so others will know.

Thanks for the complement. but I guess I didn't flag my last post.

Now I flaged the post.

Well done.