diff --git a/inc/myco.js b/inc/myco.js
index 8a438c6..f482eaa 100644
--- a/inc/myco.js
+++ b/inc/myco.js
@@ -434,6 +434,7 @@ on_valid_login_modal=function(e) {
   pass=$('#login_modal #login_pass')[0].value;
   server=$('#login_modal #login_server')[0].value;
   $('#login_modal').modal('hide');
+  pleaseWaitShow();
   sync_server.login(server,email,pass,
     function(data) {
       localStorage.user=JSON.stringify({
@@ -442,9 +443,11 @@ on_valid_login_modal=function(e) {
         'password': pass,
         'server': server,
       });
+      pleaseWaitHide();
       logged_menu();
     },
     function(data) {
+      pleaseWaitHide();
       if (jQuery.type(data) != 'object' && data.loginerror) {
         alert(data.loginerror);
       }
@@ -463,6 +466,7 @@ on_valid_login_modal=function(e) {
  ********************/
 on_click_sync_btn=function(e) {
   if (user) {
+    pleaseWaitShow();
     sync_server.sync(user.server, user.email, user.password, groups.export(),
       function(data) {
         console.log(data);
@@ -470,14 +474,17 @@ on_click_sync_btn=function(e) {
           groups.import(data.groups);
           groups.save();
           refresh_group_list();
+          pleaseWaitHide();
           alert('Groupes synchronisés');
         }
         else {
+          pleaseWaitHide();
           console.log(data);
           alert('Erreur durant la synchronisation :(');
         }
       },
       function(data) {
+        pleaseWaitHide();
         console.log(data);
         alert('Impossible de contacter le serveur :(');
       }
@@ -548,6 +555,7 @@ pleaseWaitHide=function() {
  * Activate
  *********************/
 $( document ).ready( function() {
+  pleaseWaitShow();
   if(typeof(Storage)!=="undefined"){
     groups=new GroupList();
     groups.loadFromLocalStorage();
@@ -561,6 +569,7 @@ $( document ).ready( function() {
   }
   else {
     alert('Local storage not supported !');
+    pleaseWaitHide();
     return;
   }
   sync_server=new SyncServer();
@@ -598,4 +607,5 @@ $( document ).ready( function() {
 
   $('#remove_group_btn').bind('click',on_remove_group_btn_click);
   view_home();
+  pleaseWaitHide();
 } );