For those of you who haven’t discovered this yet, Safari has a built-in, slick developer console. It’s kind of like Firebug for Mozilla Firefox, but it looks cooler.
If you haven’t figured it out yet, the activation is simple: Just open up Safari’s Preferences and click the Advanced tab. Once you’ve done that look for a checkbox in the bottom of the pane that sais “Show Develop menu”.
I’m not sure this works on Windows. I haven’t tested yet.
Awesome lightpainting pictures.
Via Abduzeedo