(i) The children (aka leaves) of the currently-navigated-to node in the tree are all displayed in a single <ol> (or similar) list

(ii) Clicking on one of the entries in the aforementioned <ol> will navigate the user down a level and display the new list of children where the old list was

(iii) Navigation upwards, and information about where the user is in the tree, are provided by a "breadcrumb trail".

Does anyone know if a jQuery plugin that will provide such functionality?

Thanks in advance.

James