Firefox (at least v23) interprets the double-quotes.
Changed URL option #t to &start.

* YouTube's watch_popup seems to ignore #t and &t now.
* Option &start works but needs an integer as parameter.
Start Popout in 720p.

* Created HD link for 720p.
* Adjusted SD link to better fit default resolution (640x360).
Merge pull request #2 from Napkin/master

Fix Firefox bookmarklet, fix starting time, add HD bookmarklet