Rated 5 out of 5 stars
I currently use this addon and it works very well. However I find its very hard to select bookmarks in a folder as it hides too quickly for me and doesnt always respond to bookmarks i click in folders. So i turned autohide off and Used another addon to autohide for me with set times.
Its called 'Bookmark Autohider'
If i could give 4½ stars i would, However ill give it 5 as its not possible.