[x] better IE test (right now i'm just looking for attachEvent)
  see http://javariet.dk/shared/browser_dom.htm
[x] gears
[ ] test to make sure userdata is enabled?
[x] test for IE8 support (they seem to use getItem, setItem, and removeItem)
[-] some form of opera support
[x] flash
[ ] air?
[ ] clear method
