dTree is a free JavaScript tree menu.

There are a lot of tree generating scripts just like this one, and many of them are great. So why use dTree?
dTree is very simple to set up and use. You don't have to worry about adding pages to the tree in a specific order, which makes it ideal for generating a tree from a database.

Unlimited number of levels
Can be used with or without frames
Remembers the state of the tree between pages
Possible to have as many trees as you like on a page
All major browsers suported
Internet Explorer 5+
Netscape 6+
Opera 7+
Mozilla
Generates XHTML 1.0 strict validated output
Alternative images for each node

https://destroydrop.com/javascripts/tree/