My PowerBook G4 12-inch supported maximum resolution in 1024 x 768 pixels, in today it is very small for my internet lifestyle.
Result: I have more space for surf 1009 x 666 pixels.
0. Install extension Tab Sidebar and Toolbar Buttons in first.
1. Open sidebar (Tab Sidebar) with toolbar button (or View menu) for use sidebar (I config for "Hide the tab bar when the sidebar is open".)
2. Close sidebar with "close sidebar button" to hide sidebar.
3. Use "Show Tab List" for switch between the tabs.
4. Use "Close Open Tab or Window" for close current tab.
Yes, It is work.