The misunderstanding seems to persist: NS 3.0 does have JS built in. As I understand things and, as already stated before, JS is disabled when you load NS. Menu>Choices>Content takes you to the selection where you can enable JS. With 3.0 you will always have to set what you want each time NS is loaded, unlike the developemnt versions which will retain the choice once selected whenever NS is subsequently reloaded.
Gerald