MultiListboxTortureCode

    def get(self, first, last=None):
        result = []
        for l in self.lists:
            result.append(l.get(first, last))
        if last: return list(map(*[None] + result))
        return result

    def index(self, index):
        self.lists[0].index(index)

    def insert(self, index, *elements):  #Elements = the fields in a row.
        # Loop through each field in the row
        for e in elements:
            # Each field will have an index number. Ex: e[0] = ID, e[1] = Date, etc.
            i = 0
            for l in self.lists:
                # Insert each field in its applicable list box
                # Insert a blank if the field is None, otherwise boxes won't align.
                if e[i] == None:
                    l.insert(index, " ")
                else:
                    l.insert(index, e[i])
                i = i + 1

    def Size(self):
        return self.lists[0].size()

    def see(self, index):
        for l in self.lists:
            l.see(index)

    def SelectionClear(self, first, last=None):
        # Unselects the entire line by looping over each of the list boxes that make up the MLB.
        for l in self.lists:
            l.selection_clear(first, last)

    def SelectionSet(self, first, last=None)
        self.item_selected = [first, ] + self.get(first)

        for l in self.lists:
            # Sets the selection to the same row in all list boxes
            l.selection_set(first, last)

    def not_focus(self):
        for l in self.lists:
            l['takefocus'] = False