I hate unfinished forum threads, therefore I am posting some additional information about this problem with tooltips that I am experiencing. After some additional research I understand the problem, but I am still searching for a solution.
In Opera I discovered an option to toggle showing tooltips. I had that option disabled and when I enabled the option, Opera then displayed tooltips when I hovered over certain images and forum thread titles. That explains why previously when I used Opera the tooltips did not appear.
I could find no equivalent toggle in Firefox.
After some more research and with the help of the posts in this thread, I realized that the tooltips are caused by using the "title" element. If any HTML tag contains this element, then a properly designed browser will display the tooltips. Fair enough, I now at least understand why these tooltips appeared in K-M, and now in Opera. But what about Firefox?
A little more surfing revealed that Firefox has long been published with a known bug where the browser fails to display tooltips derived from the title element. Thus, for the past, oh, three or four years that I have been using Firefox, I have been surfing without these tooltips appearing and because of the bug being inherent from the beginning, I never knew that tooltips should
Because I do not like these tooltips popping up, long ago I probably disabled that option in Opera and had since forgotten.
So understand that for the past several years I have been surfing without these tooltips popping up from using the title element. This became the norm for me. With my recent introduction to K-M, and these tooltips "suddenly" appearing everywhere, I thought the problem was with K-M. But the problem actually was that long-standing bug in Firefox that never displayed the tooltips and the manner in which I configured Opera.
Now the irony of this story is that I do not like the tooltips popping up all over the place. I prefer the way in which Firefox worked---no tooltips, despite the cause actually being a bug.
The problem is not K-M---K-M is displaying the tooltips as required by the HTML specs. But after years of using the buggy Firefox, I actually have grown to prefer not displaying the tooltips.
Somebody mentioned I could prevent the display of these tooltips with some code in userContent.css. That seems plausible, but I am not a whiz at this kind of thing and if anybody can provide a few clues, I might be able to eliminate the display of tooltips when I am using K-M. The solution is that I need to be able to filter all "title" elements from any HTML tag.
I truly find these tooltips distracting and annoying.
I'd be grateful if anybody can help or provide some links for me to follow so I can modify userContent.css.