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Sam Buchanan's weblog.

Mozilla DOM Inspector Tutorial

Okay, if grayrest's Guide to the DOM Inspector doesn't convince you that Mozilla is one kick-ass tool for web development, I don't know what will. I've already been using the DOM inspector to, well, inspect the DOM, but it does so much more. Change stuff. Tweak CSS. Delete nodes. Grab screen shots of sections of selected elements.

Whoa.