JS node

function Node (data) {
    this.left = void(0);
    this.right = void(0); 
    this.data = data;       
}

var root = new Node ('F'); 
root.left = new Node('B');
root.right = new Node('G');

root.left.left = new Node('A'); 
root.left.right = new Node('D'); 

root.left.right.left = new Node('C'); 
root.left.right.right = new Node('E');

root.right.right = new Node('I'); 
root.right.right.left = new Node('H');