Failed to Load Resource Javascript?

[Chris]

The problem is that you're opening this file on your own computer, not on a server.
The script is linked using the "//.." notation, which will use the same protocol as the page, in this case "file", not "http".

Try changing this line:
js.src = "//connect.facebook.net/en_US/all.js";

to:
js.src = "http://connect.facebook.net/en_US/all.js";

(yahoo cuts off the line, just add "http:" at the start)