Could you give an example what you want to accomplish and what the structure of the site is? Example:
Structure of the site:
-mainfolderA
--subfolderA1
--subfolderA2
--subsubfolderA2i
--subsubfolderA2ii
--subsubfolderA2iii
--subfolderA3
-mainfolderB
--subfolderB1
--subfolderB2
-mainfolderC
--subfolderC1
--subfolderC2 --subfolderC3
The menu on the main page should look like: ...
and when clicking on mainfolderA, the menu should look like: ...