I'm utilizing jQuery in my extension, and I was wondering if there is
a way to use jQuery's main function without having to specify the 2nd
context parameter, just like in Greasemonkey. So far I've come up

var document = e.originalTarget;
var html = $("html", document)[0];

which works flawlessly, but when I try:

var html = $("html")[0];

it returns an error.

Thanks for helping,