Implementing a multi-level dynamic menu

[eluser]Andy78[/eluser]
Is there a library or third party add on that will make adding a menu system to a codeigniter site easy? I am having a lot of trouble finding clear info on this.

What I want to be able to do is be able to add items to a menu via the admin side of the site then assign pages to that menu item. It would also be good if the menus could have sub-menus added to them.

I know that it gets a bit tricky when trying implement dynamic sub-menus but surly this must have been done hundreds of time before with codeignter?

But even a menu with two levels would probably do for my purposes. If possible could somebody posy the database structure and code? or point me in the right direction for guidance?