Firefox and Firebug: A Developer's Swiss Army Knife
Jun 19, 2009, 18:03 (0 Talkback[s])
"Firebug has two main modes: INSPECT and EDIT.
This is the go-to feature for deconstructing those CMS themes, and
you will wonder how you ever got along without it.
"Click the INSPECT menu option to activate this feature. Once
activated, move your mouse over an area of the viewed Web page.
Click your right mouse button once to lock in that position."