Finding if a child node exists under a treenode in TreeView

I need to access child nodes of the selected node using javascript. I was able to achieve till here -retrieving the selected node.

 

 

var treeViewData = window["<%=FileTreeView.ClientID%>" + "_Data"];

if (treeViewData.selectedNodeID.value != "") {

var selectedNode = document.getElementById(treeViewData.selectedNodeID.value);

var text = selectedNode.innerHTML;

 

Next I need to iterate through the child nodes of selected node. I have tried with selectedNode.childNodes,selectedNode.children which returns either 0 or 1 which is not true in my case. Please help.

Divya