Code isn't added still on the site and it's not a www problem. The code is not showing at all. Here's my guess. You may have added the code inside an "if" statement by accident.

Your going to have to paste the overall header file here for us to have a look at it as you must have accidentally put it in the wrong place.

Their are other possibilities but that would be my first guess. Don't try adding it to the footer as suggested above. it's better practice to have the code in the header.