utf8 source code

Hey.

I was wondering how this person does it to have an utf8 source code: http://www.twblog.net/

If you look at the source and do Save As, you can see that the encoding is UTF8.

I tryed typing

header("Content-type: text/html; charset=utf-8");

but that didn't change a thing.

Thanks in advance

might be more to do with these tags

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">