nodes = menu_pool.get_nodes(request, namespace, root_id)
selected_node = None
selected_node_level = 0

for node in nodes:
    if node.selected:
        selected_node_level = node.level
        selected_node = node
        print node.id
        break

children = cut_levels(nodes, selected_node_level, selected_node_level + 1, 0, 1)