In the past, when I implemented shortcuts for web applications, I used different ones for different browsers: for example Ctrl+Shift+A was used in Chrome, but would be something else, like Ctrl+Shift+C in Firefox, since Firefox reserves the Ctrl+Shift+A shortcut for add-ons.
Actually, I have a project where it would be nice to have the same shortcuts for every browser.
Is there a list of shortcuts which are not reserved in any major browser (Chrome, Firefox, Safari, IE and Opera) or do I have to do my own by listing?
Google wasn't helpful, since it rather shows the list of shortcuts which are common to all major browsers.