Able to trigger JavaScript Events. Colors, fonts, icons and backgrounds are configurable. Several types of borders.
Lines can be solid, dashed, dotted or just hidden.
Animation of the tree when displayed for the first time. More than 100 gif icons and backgrounds provided with the registered version. Tips for the nodes. The separation between lines, text and icon and margin are also configurable. I've tried about 15 different tree applets now and yours is by far the best.