I'm working on a web application and I'd like to add some keyboard shortcuts. Things like Ctrl-N, or Ctrl-Space. However, I do not want to use a keyboard shortcut that's already used by the browser.
For example, using the Ctrl-Space shortcut in Google Chrome on OS X is fine, but in Firefox on OS X it brings up a right-click menu in the browser.
Is there a known list of cross browser/OS keyboard shortcuts that are safe (or unsafe) to use for web applications?
If you need to know only standard browser keyboard shortcuts, they are listed here.
Separate browser's shortcuts lists:
Internet Explorer's shortcuts can be found here.
Firefox's here. (scroll down a bit)
Google Chrome's here.
Safari's official source here, but a better one is here.
Opera's here.
And I find this comparison table ugly, but very useful.