Looking at the source, it looks like there's only one line that calls jQuery on line 37 (and I don't think it should be using the short calling convention without a wrapper -- if you rename jQuery to '_' or something else it won't work):

    else if($.isNumeric(arg)

There's no native JavaScript equivalent to it if I recall correctly, but there's a bunch of alternatives to it as well.

It should be easy enough to extract out the logic and repackage it. Maybe I'll fork it tomorrow and do the changes myself.