55     def is_empty(self):

    55     def is_empty(self):

    56         return len(self) == 0

    56         return len(self) == 0

    57 

    57 

    58     def append(self, item):

    58     def append(self, item):

    59         self.items.append(item)

    59         self.items.append(item)

    60 

    63 

    61     title_class = 'boxTitle'

    64     title_class = 'boxTitle'

    62     main_div_class = 'boxContent'

    65     main_div_class = 'boxContent'

    63     listing_class = 'boxListing'

    66     listing_class = 'boxListing'

    64 

    67