Features:
-Auto-confirm (the "are you still watching" confirm dialog)
-Auto-Playnext (on playlists when resume playing icon appears in center of video)
-Auto-Resume (from paused state)
-Auto-Fullscreen-Resume

Tested with Firefox!
for fullscreen to work with firefox goto: about:config search for full-screen-api.allow-trusted-requests-only and set it to false

To disable auto-resume to fullscreen mode on CheckFullscreen() function replace: return event; WITH return true;