I want to redraw the webTreeId and nodeId in the DragStart method on CSOM. But my method return nothing.

function dragDrop(treeId, nodeId)

{

 var tree = igtree_getTreeById(treeId);

var node = igtree_getNodeById(nodeId);

alert(tree);

}

<

ignav:UltraWebTree ID="UltraWebTree1" runat="server" DefaultImage=""

HiliteClass="" HoverClass="" Indentation="20" AllowDrag="True" Selectable="true" >

thx