This is a very simple Safari 5 extensions which adds basic mouse gestures to navigate or open/close tabs and windows.
You can choose to execute the gestures using either the left (discouraged!), the middle or the right mouse button.
Important: Unfortunately utilizing the right mouse button disables Safari's context menu. This is a known limitation and it seems like there is no way to work around this behavior. You can open the context menu by double-clicking the right button in this case. This issue doesn't exist in Safari 5 for Windows.
The following commands are available:
Remember to activate extension support in the preferences!
If you've got any questions, feel free to drop me a message. You may also contact me on Twitter.