I think I got it fixed. I installed Adblock Plus as an add on for my Firefox browser. It killed all the ads. It was getting so bad I couldn't type, and the board was getting so small I could hardly read the forum print. I really had it bad.
The reason I knew all this is because I put my wife's computer next to mine on the same page at the same time and she had no junk coming up. I checked her add ons with mine and I had about 10 more than she, so I disabled all that stuff.
Now I can post and read the bus boards again