insertNewItem

creates a new node as a child to the specified one with parentId

void insertNewItem(string|number parentId,string|number id,string text, [function actionHandler,string image1,string image2,string image3,string optionStr,mixed children] );

parentId	string\|number	parent node's id
id	string\|number	new node's id
text	string	new node's label
actionHandler	function	function fired on clicking an item, optional
image1	string	image for a node without children, optional
image2	string	image for a closed node, optional
image3	string	image for an opened node, optional
optionStr	string	options' string, optional
children	mixed	node children flag (for dynamic trees), optional

Example

myTree.insertNewItem("my_parent_11","11_1","item 11");