Just what I needed - a simple download with all the quality options. Thank you for the great work!

It works just as it's advertised. I prefer these sorts of scripts to be unobtrusive and that's exactly what this one is. It simply adds the download button from which you can choose your format.

Firefox 3.6.17.

Error console reports "ss.addRule is not a function" on line 46.

Googled, and found this describes the proper use of addRule() and, insertRule():
http://help.dottoro.com/ljvmpkap.php