diff --git a/participate.py b/participate.py
index 001be88..8c01d1b 100755
--- a/participate.py
+++ b/participate.py
@@ -334,6 +334,19 @@ def delete_user(user_id):
     print "------------------------------"
     return False
 
+def get_user_name(user_id):
+  """ Get pseudo from user ID """
+  try:
+    user = Tetawebapp_users.query.filter_by(id=int(user_id)).first()
+    return user.name
+  except Exception as e:
+    print "[+] Error at get_pseudo:"
+    print "------------------------------"
+    print "%s" % e.message
+    print "------------------------------"
+    return False
+  
+
 def save_turn(role_id, day, start, end, num_slot):
   """ Save a new turn """
   days = ['2018-05-08', '2018-05-09', '2018-05-10', '2018-05-11', '2018-05-12', '2018-05-13', '2018-05-14']
@@ -1117,16 +1130,9 @@ def clear_staff_slot(TURN_ID, SLOT_ID):
     turn_id = int(TURN_ID.encode('utf-8'))
     slot_id = int(SLOT_ID.encode('utf-8'))
     user_id = session['user_id']
-    message = "Erreur lors de l'enregistrement des données"
     if (drop_staff_slot(turn_id, slot_id, user_id)):
-      message = ''
-    page = str(request.url_rule)
-    menu = get_menu(page)
-    turns = turns_list()
-    staffs = get_staffs()
-    roles = get_roles()
-    user_id = session['user_id']
-    return render_template('staffsheet.html', menu=menu, turns=turns, staffs=staffs, user_id=user_id, roles=roles, message=message.decode('utf-8'))
+      return " "
+    return "Erreur"
   except AttributeError:
     # User is not logged in
     return render_template('login_or_register.html', message="Utilisateur ou mot de passe invalide")
@@ -1141,16 +1147,11 @@ def update_staff_slot(TURN_ID, SLOT_ID):
     turn_id = int(TURN_ID.encode('utf-8'))
     slot_id = int(SLOT_ID.encode('utf-8'))
     user_id = session['user_id']
-    message = "Erreur lors de l'enregistrement des données"
-    if (save_staff_slot(turn_id, slot_id, user_id)):
-      message = ''
-    page = str(request.url_rule)
-    menu = get_menu(page)
-    turns = turns_list()
-    staffs = get_staffs()
-    roles = get_roles()
-    user_id = session['user_id']
-    return render_template('staffsheet.html', menu=menu, turns=turns, staffs=staffs, user_id=user_id, roles=roles, message=message.decode('utf-8'))
+    user_name = get_user_name(user_id)
+    if user_name != None:
+      if (save_staff_slot(turn_id, slot_id, user_id)):
+        return user_name
+    return "Erreur"
   except AttributeError as e:
     # User is not logged in
     print e
diff --git a/static/scripts/participate.js b/static/scripts/participate.js
index c4af181..b4c11d9 100644
--- a/static/scripts/participate.js
+++ b/static/scripts/participate.js
@@ -60,14 +60,18 @@ function save_turn() {
   }
 }
 
-function update_sheet(turn, slot) {
-  document.location = '/staffsheet/update/'+turn+'/'+slot;
+function update_sheet(obj, turn, slot) {
+  var url = '/staffsheet/update/'+turn+'/'+slot;
+  get_html_from_ajax(obj, url);
+  obj.onclick=function (){ return clear_sheet(obj, turn, slot);}
   return true;
 }
 
-function clear_sheet(turn, slot) {
+function clear_sheet(obj, turn, slot) {
   if (confirm("Voulez-vous vraiment libérer ce créneau ? \n\n Confirmer ?")) {
-    document.location = '/staffsheet/clear/'+turn+'/'+slot;
+    var url = '/staffsheet/clear/'+turn+'/'+slot;
+    get_html_from_ajax(obj, url);
+    obj.onclick=function (){ return update_sheet(obj, turn, slot);}
   }
   return false;
 }
diff --git a/templates/staffsheet.html b/templates/staffsheet.html
index 74ca3b6..ca064c5 100644
--- a/templates/staffsheet.html
+++ b/templates/staffsheet.html
@@ -67,14 +67,14 @@
         {%           if allocated_slot.append(sslot[0].slot_num) %}
         {%           endif %}
         {%           if user_id == sslot[0].user_id %}
-            <div class='sheet_user{{ num_slot }} {{ border }}' onclick='javascript:clear_sheet({{ turn_id }}, {{ slot }})'>{{ sslot[1] }}</div>
+            <div class='sheet_user{{ num_slot }} {{ border }}' id='staff_{{ turn_id }}_{{ slot }}' onclick='javascript:clear_sheet(this, {{ turn_id }}, {{ slot }})'>{{ sslot[1] }}</div>
         {%           else %}
-            <div class='sheet_user{{ num_slot }} {{ border }}' style='cursor: text;'>{{ sslot[1] }}</div>
+            <div class='sheet_user{{ num_slot }} {{ border }}' id='staff_{{ turn_id }}_{{ slot }}' style='cursor: text;'>{{ sslot[1] }}</div>
         {%           endif %}
         {%         endif %}
         {%       endfor %}
         {%       if slot not in allocated_slot %}
-            <div class='sheet_user{{ num_slot }} {{ border }}' onclick='javascript:update_sheet({{ turn_id }}, {{ slot }})'>&nbsp;</div>
+            <div class='sheet_user{{ num_slot }} {{ border }}' id='staff_{{ turn_id }}_{{ slot }}' onclick='javascript:update_sheet(this, {{ turn_id }}, {{ slot }})'>&nbsp;</div>
         {%       endif %}
         {%     endfor %}
           </div>