I had a similar issue with my login in my overall_header.html file for a single, global login. From what I've seen, S_LOGIN_REDIRECT only redirects the user to the previous page. It's a hidden input, so you don't see it visually on the form. You must, however, place the code before </form> in order for the data to be sent with the form. Good practice would be to set it within a <fieldset> too.
- The phpBB playground of a highschool web designer with a suspicious attraction. It's like catharsis.