multilevel tree grid

I am using the dhtmlx tree grid control.

Currently it has a single level of nodes.Can i have more than one level; in the nodes.i.e. Can i have nodes within nodes.Upto how many levels can i go.

Is there an example available for it ?

There are two different components
    dhtmlxgrid - allow only one level hierarchy
    dhtmlxtreegrid - allow multiple levels of hierarchy , there is no limitation on hierarchy size
You can check any TreeGrid related samples at … ndex.shtml
All such samples also included in your TreeGrid package  ( dhtmlxTreeGrid/samples/… )