def NcursesInterface::open_link(item)
        return unless item['title'] and (item['url'] or item['site'])
        url = item['site'] || item['url']
        
        use_screen = $config['use_screen'] && in_screen?
        
        cmd = $config['browser_cmd'].map { |cmd_part|
        case cmd_part
          when /%s/:  cmd_part % url.escape
          when '${browser}':  $config['browser']
          else cmd_part
          end
        }
        if use_screen  
          screen_cmd = $config['screen_cmd'].map { |cmd_part|
            if cmd_part =~ /%s/
              cmd_part % item['title']
            else
              cmd_part
            end
          }
          cmd.unshift(*screen_cmd)  
        end
        
        NcursesInterface::save_screen unless use_screen
        system(*cmd)
  
        NcursesInterface::restore_screen unless use_screen  
      end