[FraaJad]

* the newly expanded columns should line up on top.

* the elements should not be pushed lower when a taller child element is introduced. This hides the elements on the left column(s).

* to keep a visual track of how I arrived at the current level, set background of the clicked elements to a different colour. This should provide the same functionality provided by point 1 above, without taking away the visual cue.

In summary, please take a look at how Apple Finder implements directory browsing using vertical columns.

[csuper]

dfens: Cool site - I will be using it a lot.

I do agree with the first two items FraaJad pointed out. Nice work.