This is a list of keyboard and mouse shortcuts in Firebug
Global
Open Firebug Panel - F12
Close Firebug Panel - F12
Open Firebug in Window -Ctrl+F12
?+F12
Switch to Previous Tab - Ctrl+`
Option+Tab
Focus Command Line - Ctrl+Shift+L
?+Shift+L
Focus Search - Ctrl+Shift+K
?+Shift+K
Toggle Inspect Mode - Ctrl+Shift+C
?+Shift+C
Toggle JavaScript Profiler - Ctrl+Shift+P
?+Shift+P
Re-Execute Last Command Line -Ctrl+Shift+E
HTML Tab
Edit Attribute -Click on name or value
Edit Text Node -Click on text
Edit Element-Double-Click tag name
Next Node in Path-Ctrl+.
Previous Node in Path-Ctrl+,
HTML Editor
Finish Editing- Return
Cancel Editing- Esc
Advance to Next Field- Tab
Advance to Previous Field- Shift+Tab
HTML Inspect Mode
Cancel Inspection- Esc
Inspect Parent- Ctrl+Up
?+Up
Inspect Child- Ctrl+Down
?+Down
Script Tab
Continue- F5
Ctrl+/
?+/
Step Over- F10
Ctrl+'
?+'
Step Into- F11
Ctrl+;
?+;
Step Out- Shift+F11
Ctrl+Shift+;
?+Shift+;
Toggle Breakpoint- Click on line number
Disable Breakpoint- Shift+Click on line number
Edit Breakpoint Condition- Right-Click on line number
Run to Line- Middle-Click on line number
Ctrl+Click on line number
?+Click on line number
Next Function on Stack- Ctrl+.
Previous Function on Stack- Ctrl+,
Focus Menu of Scripts- Ctrl+Space
?+Shift+Space
Focus Watch Editor- Ctrl+Shift+N
?+Shift+N
DOM Tab
Edit Property- Double-Click on empty space
Next Object in Path- Ctrl+.
Previous Object in Path- Ctrl+,
DOM and Watch Editor
Finish Editing- Return
Cancel Editing- Esc
Autocomplete Next Property- Tab
Autocomplete Previous Property- Shift+Tab
CSS Tab
Edit Property- Click on property
Insert New Property- Double-Click on white-space
Focus Menu of Style Sheets- Ctrl+Space
?+Shift+Space
CSS Editor
Finish Editing- Return
Cancel Editing- Esc
Advance to Next Field- Tab
Advance to Previous Field- Shift+Tab
Increase Number by One- Up
Decrease Number by One- Down
Increase Number by Ten- Page Up
Decrease Number by Ten- Page Down
Autocomplete Next Keyword- Up
Autocomplete Previous Keyword- Down