NEW YORK — Who says cyberspace is over? Not John Galliano, who’s launching a Web-specific collection today exclusively with eLuxury, targeting the young and plugged in with a collection of dresses, denim and accessories with lower prices than those of his signature ready-to-wear. Here, his black knit dress, $970, and a snapshot of the site. For more on the launch, see pages 4 and 5.