dhtmlxTree - JavaScript Tree Menu sharewareScreenshot 

dhtmlxTree represents hierarchically organized data in the best way and allows you to create user-friendly navigation system. This JavaScript Tree Menu can load its content dynamicaly from server using Ajax or directly from on-page XML data-island. The tree has cross-browser compatibility, powerful JavaScript API, drag-n-drop functionality, built-in checkboxes and context menu. There are CF and JSP tags and ASP.NET custom control for the tree.

 

Screenshot of dhtmlxTree - JavaScript Tree Menu