It's my understanding that if you specify the URL of javascript with "//" at the beginning instead of "http:// http:// or "https:// https:// that the browser wi

It's my understanding that if you specify the URL of javascript with "//" at the beginning instead of "http:// http:// or "https:// https:// that the browser will choose whichever it used to fetch the original page. I'm not sure if it's supported by most browsers or not. Searching google for this kind of information has proven most difficult because I don't know any reasonable keywords to use. Anyone have good experience using this method?