The most common mouse shortcuts in Mozilla Firefox.

Here are the most common mouse shortcuts in Mozilla Firefox.
Firefox 3:

Command	Shortcut
Back	AltOpt+Scroll DownShift+Scroll Down
Forward	AltOpt+Scroll up Shift+Scroll up
Zoom In	Ctrl+Scroll up
Zoom Out	Ctrl+Scroll down
Close Tab	Middle-click on Tab
New Tab	Double-Click on Tab Bar
Open in Background Tab	CtrlCmd+Left-click Middle-click
Open in Foreground Tab	CtrlCmd+Shift+Left-click Shift+Middle-click
Open in New Window	Shift+Left-click
Copy Tab or Bookmark	Ctrl+DragN/A
Paste URL and Go1	Middle-click on Tab
Reload (override cache)	Shift+Reload button
Save Page As	AltOpt+Left-clickN/A
Scroll line by line	CtrlCmd+ScrollAltOpt+Scroll

Firefox 2:

Command	Shortcut
Back	AltOpt+Scroll DownShift+Scroll Down
Close Tab	Middle-click on Tab
Decrease Text Size	Ctrl+Scroll up
Forward	AltOpt+Scroll up Shift+Scroll up
Increase Text Size	Ctrl+Scroll down
New Tab	Double-Click on Tab Bar
Open in Background Tab	CtrlCmd+Left-click Middle-click
Open in Foreground Tab	CtrlCmd+Shift+Left-click Shift+Middle-click
Open in New Window	Shift+Left-click
Paste URL and Go1	Middle-click on Tab
Reload (override cache)	Shift+Reload button
Save Page As	AltOpt+Left-click
Scroll line by line	CtrlCmd+ScrollAltOpt+Scroll