def make_frame(img, width, height):
        """
        Teilt die übergebene Surface img in 9 Teile.
         |            |
        ----------------
         |            |
         |            |
        ----------------
         |            |
        Zurückgegeben wird ein dict mit allen Teilen, über
        folgende keys erreichbar: n, ne, e, se, s, sw, w, nw, c
        """
        w, h = img.get_size()
        half_x = int(w/2+1)
        half_y = int(h/2+1)

        parts = []
        widths = ((0,half_x),(half_x, half_x+1), (half_x+1,w))
        heights= ((0,half_y),(half_y, half_y+1), (half_y+1,h))

        for x1, x2 in widths:
            for y1, y2 in heights:
                s = pygame.surface.Surface((x2-x1, y2-y1)).convert_alpha()
                s.blit(img, (0,0), pygame.rect.Rect((x1,y1,x2,y2)))
                parts.append(s)

        direction_mapping = ["nw", "w", "sw", "n", "c", "s", "ne", "e", "se"]
        parts = dict(zip(direction_mapping, parts))
        resize_width = width - w + 1
        resize_height = height - h + 1

        # height resizing
        for k in "wce":
            parts[k] = pygame.transform.scale(parts[k], (parts[k].get_width(), resize_height))

        # width resizing
        for k in "ncs":
            parts[k] = pygame.transform.scale(parts[k], (resize_width, parts[k].get_height()))

        # frame it
        s = pygame.surface.Surface((width, height)).convert_alpha()
        x, y = 0,0
        for yk in ["n", "", "s"]:
            for xk in ["w", "", "e"]:
                k=yk+xk or "c"
                s.blit(parts[k],(x,y))
                x+=parts[k].get_width()
            y+=parts[k].get_height()
            x=0
        return s