I am guessing the answer is 'no', because the Alt and Ctrl keys inside a web browser are typically handled by the browser itself. Ctrl-f in vi should be page-down, but the web browsers typically use it as Search. Meta-f in Emacs should be move forward a
word, but the browser will probably pop open the File menu. etc... etc...
I am not affiliated with CodEnvy, so I could be completely wrong.