several times in the past i was try to represent xml data in a tree view they are different appraches to this problem
looking around in the internet i have found greate javascript trees just like at www.destroydrop.com but the problem with this approach is that you have to create the whole tree in javascript nand then "play" this code in browser at least i have deside that is more clean to have a [xml (tree) --> html] and a generic js code make the html output behave as tree (expand/collapse) the best solution (i thing) is using behaviors (.htc) but are supported only from IE i dont know i something similar is suported from mozilla i have something that work in this way using a simple js but its very-very simple --stavros