I keep getting up at the navigation bar how to correct this or stop buttons. When I have used the Overdrive the High Contrast it never over rides it. I keep getting the window with the high cap A and low cap a. Al of this takes out the enjoyment of using FIREFOX. I use high black contrast due to my vision. Up to about 2 or 3 weeks ago, I never had a problem with this but now it shows up and delays me getting into the website of my choice. Un and reinstalling dows not correct the issue. I said this in case as in the past this is the info that I got.