i doubt nortons blocking the site, unless it has a pop up blocker..the most likely culprit.
which browser are you using? in firefox its in tools/options/ contents...either turn it off ( good if you r a shopaolic and like lots of adverts) pr just add hires to your list of allowed sites. cant say much about ie, but imagine its pretty much the same
Sorry for my English, i'm from Leicester innit?