It’s always easy if you know how it works – I wanted to switch between different windows of Firefox (not tabs) on OS X Mountain Lion (10.8.4).
Easy way:
just press command
and `
together – voilĂ , next window.
Thorough way:
go to System Preferences...
, Keyboard
, Keyboard Shortcuts
.
There you find the options on how to navigate through the system once you selected Keyboard & Text Input
on the left list view.