Firefox Sidebar
If you are all of sudden seeing a sidebar in Firebox and can't figure out a way to get rid of it, you have come to the right Blog posting!
The reason this appears is because somehow you click Ctrl-B or Ctrl-H. To remove the side bar, you need to do is repeat the step again:- If you see anything about bookmarks, you open the Bookmark Sidebar, type in Ctrl-B again and it will close the bar.
- If you see 'Today', 'Last 7 days', or 'This month,' then you open the History sidebar, type in Ctrl-H and it will close the side bar.
Hopefully this helps someone close out the sidebar that they accidentally opened.