diff -r 5897669370f4 -r d5e2007c01d8 server/python/django/renkanmanager/utils.py
--- a/server/python/django/renkanmanager/utils.py	Fri Jul 25 16:26:12 2014 +0200
+++ b/server/python/django/renkanmanager/utils.py	Tue Aug 26 16:06:55 2014 +0200
@@ -32,7 +32,7 @@
     cat_nb_nodes = {}
     
     def init(self, cat_nb_nodes_initial):
-        raise NotImplementedError( "Should have implemented get_place" )
+        raise NotImplementedError( "Should have implemented init" )
     
     def get_place(self, category):
         if not category or category not in self.cat_nb_nodes:
@@ -59,7 +59,7 @@
                 order, nb = nb
             offset = float(self.max_length - nb) / 2
             for i in xrange(nb):
-                self.cat_nb_nodes[c].append({ "x": order*300, "y": 100*(i+offset) })
+                self.cat_nb_nodes[c].append({ "x": order*500, "y": 100*(i+offset) })
         #logger.debug(self.cat_nb_nodes)