But my original point remains valid, because I have ALWAYS had my resolution set at 800x600, and I have never before even noticed that ad, let alone having it block the Forum jump menu. The ad is a new one. It never used to be there, regardless of where you see it in a horizontal direction.
What browser are you running? I know Firefox, Chrome, and Safari have extensions that you can download which will block all ads from showing up on webpages.
I see you're using Internet Explorer. I would say change your browser to one of the one's I mentioned and get AdBlock which will make it so you don't see any ads.
At work, I have IE. At home, I have Firefox. Popup blocking is enabled on both browsers.
The ad I am talking about is not a popup. It is a permanent ad that appears at the bottom of the page when you are in a thread. It is a Google ad. I would venture to say that it is visible to everyone here - whatever browser you use, whether or not you have a popup blocker enabled, whether or not you are a site contributor.
As mentioned above, my problem turned out to be a resolution problem. When I increase my resolution, the ad "moves" over to the left and no longer obscures the forum jump window/field.