diff --git a/seminar/treelib.py b/seminar/treelib.py
index 6e531c63..0f21454c 100644
--- a/seminar/treelib.py
+++ b/seminar/treelib.py
@@ -153,11 +153,25 @@ def get_prev_node_of_type(node, type):
 
 # Editace stromu:
 def create_node_after(predecessor, type, **kwargs):
-	pass
+	new_node = type.objects.create(**kwargs)
+	new_node.save()
+	succ = predecessor.succ
+	predecessor.succ = new_node
+	predecessor.save()
+	new_node.succ = succ
+	new_node.save()
 
 # Vyrábí prvního syna, ostatní nalepí za (existují-li)
 def create_child(parent, type, **kwargs):
-	pass
+	new_node = type.objects.create(**kwargs)
+	new_node.save()
+	orig_child = parent.first_child
+	parent.first_child = new_node
+	parent.save()
+	if orig_child is not None:
+		# Přidáme původního prvního syna jako potomka nového vrcholu
+		new_node.succ = orig_child
+		new_node.save()
 
 def create_node_before(some, arguments, but, i, dont, know, which, yet):
 	pass