I have tried to use Menu Attributes module on Marinelli theme to have my few menu links to open in a new window or tab. It should be possible with Menu Attributes, but after I have configured menu link to open in new window, it really doesn't. I found someone else with this problem and he was using also Marinelli theme. I think there's something wrong with the Marinelli's code because Menu Attributes doesn't work properly. I just updated my Drupal to 7.16. I also attached a picture where I have pointed three links which have to be opened in a new window or tab.
I hope you can help me with this issue! Other than this, Marinelli has worked like a charm.