Simple Tree Menu with Mootools

list item1
- sublist item 1
- - sublist item 1
  - - sublist item 1
    - sublist item 2
    - sublist item 3
  - sublist item 2
  - - sublist item 1
    - sublist item 2
    - sublist item 3
  - sublist item 3
  - - sublist item 1
    - sublist item 2
    - sublist item 3
- sublist item 2
- - sublist item 1
  - - sublist item 1
    - sublist item 2
    - sublist item 3
  - sublist item 2
  - - sublist item 1
    - sublist item 2
    - sublist item 3
  - sublist item 3
  - - sublist item 1
    - sublist item 2
    - sublist item 3
- sublist item 3
- - sublist item 1
  - - sublist item 1
    - sublist item 2
    - sublist item 3
  - sublist item 2
  - - sublist item 1
    - sublist item 2
    - sublist item 3
  - sublist item 3
  - - sublist item 1
    - sublist item 2
    - sublist item 3
list item 2
- sublist item 1
- - sublist item 1
  - - sublist item 1
    - sublist item 2
    - sublist item 3
  - sublist item 2
  - - sublist item 1
    - sublist item 2
    - sublist item 3
  - sublist item 3
  - - sublist item 1
    - sublist item 2
    - sublist item 3
- sublist item 2
- - sublist item 1
  - - sublist item 1
    - sublist item 2
    - sublist item 3
  - sublist item 2
  - - sublist item 1
    - sublist item 2
    - sublist item 3
  - sublist item 3
  - - sublist item 1
    - sublist item 2
    - sublist item 3
- sublist item 3
- - sublist item 1
  - - sublist item 1
    - sublist item 2
    - sublist item 3
  - sublist item 2
  - - sublist item 1
    - sublist item 2
    - sublist item 3
  - sublist item 3
  - - sublist item 1
    - sublist item 2
    - sublist item 3
list item 3
- sublist item 1
- - sublist item 1
  - - sublist item 1
    - sublist item 2
    - sublist item 3
  - sublist item 2
  - - sublist item 1
    - sublist item 2
    - sublist item 3
  - sublist item 3
  - - sublist item 1
    - sublist item 2
    - sublist item 3
- sublist item 2
- - sublist item 1
  - - sublist item 1
    - sublist item 2
    - sublist item 3
  - sublist item 2
  - - sublist item 1
    - sublist item 2
    - sublist item 3
  - sublist item 3
  - - sublist item 1
    - sublist item 2
    - sublist item 3
- sublist item 3
- - sublist item 1
  - - sublist item 1
    - sublist item 2
    - sublist item 3
  - sublist item 2
  - - sublist item 1
    - sublist item 2
    - sublist item 3
  - sublist item 3
  - - sublist item 1
    - sublist item 2
    - sublist item 3