diff --git a/dev/skeletons/skeleton_class.class.php b/dev/skeletons/skeleton_class.class.php
index 700a772c2e7..04122e8a76b 100644
--- a/dev/skeletons/skeleton_class.class.php
+++ b/dev/skeletons/skeleton_class.class.php
@@ -27,7 +27,7 @@
  */
 
 // Put here all includes required by your class file
-//require_once(DOL_DOCUMENT_ROOT."/commonobject.class.php");
+//require_once(DOL_DOCUMENT_ROOT."/core/commonobject.class.php");
 //require_once(DOL_DOCUMENT_ROOT."/societe.class.php");
 //require_once(DOL_DOCUMENT_ROOT."/product/product.class.php");
 
diff --git a/htdocs/adherents/adherent.class.php b/htdocs/adherents/adherent.class.php
index aeac72de64b..108f8d332c5 100644
--- a/htdocs/adherents/adherent.class.php
+++ b/htdocs/adherents/adherent.class.php
@@ -28,7 +28,7 @@
  *	\version    $Id$
  */
 
-require_once(DOL_DOCUMENT_ROOT."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT."/core/commonobject.class.php");
 require_once(DOL_DOCUMENT_ROOT."/adherents/cotisation.class.php");
 require_once(DOL_DOCUMENT_ROOT."/lib/functions2.lib.php");
 
diff --git a/htdocs/adherents/adherent_type.class.php b/htdocs/adherents/adherent_type.class.php
index 57549ee770d..3bef25fd58b 100644
--- a/htdocs/adherents/adherent_type.class.php
+++ b/htdocs/adherents/adherent_type.class.php
@@ -26,7 +26,7 @@
  *	\version    $Id$
  */
 
-require_once(DOL_DOCUMENT_ROOT."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT."/core/commonobject.class.php");
 
 
 /**
diff --git a/htdocs/comm/mailing/mailing.class.php b/htdocs/comm/mailing/mailing.class.php
index 174d24a20da..6e6851cc8c4 100644
--- a/htdocs/comm/mailing/mailing.class.php
+++ b/htdocs/comm/mailing/mailing.class.php
@@ -25,7 +25,7 @@
  *	\version    $Id$
  */
 
-require_once(DOL_DOCUMENT_ROOT ."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT ."/core/commonobject.class.php");
 
 
 /**
diff --git a/htdocs/comm/propal/propal.class.php b/htdocs/comm/propal/propal.class.php
index 44608301056..028cb94c547 100644
--- a/htdocs/comm/propal/propal.class.php
+++ b/htdocs/comm/propal/propal.class.php
@@ -31,7 +31,7 @@
  *	\version    $Id$
  */
 
-require_once(DOL_DOCUMENT_ROOT ."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT ."/core/commonobject.class.php");
 require_once(DOL_DOCUMENT_ROOT ."/product/product.class.php");
 require_once(DOL_DOCUMENT_ROOT ."/contact/contact.class.php");
 
diff --git a/htdocs/commande/commande.class.php b/htdocs/commande/commande.class.php
index 6fcf3aeaed8..0db6fde954b 100644
--- a/htdocs/commande/commande.class.php
+++ b/htdocs/commande/commande.class.php
@@ -26,7 +26,7 @@
  *  \version    $Id$
  */
 
-require_once(DOL_DOCUMENT_ROOT."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT."/core/commonobject.class.php");
 require_once(DOL_DOCUMENT_ROOT."/product/product.class.php");
 
 
diff --git a/htdocs/compta/bank/account.class.php b/htdocs/compta/bank/account.class.php
index 117ff08bb3d..29061cb5314 100644
--- a/htdocs/compta/bank/account.class.php
+++ b/htdocs/compta/bank/account.class.php
@@ -27,7 +27,7 @@
  *	\version    $Id$
  */
 
-require_once(DOL_DOCUMENT_ROOT ."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT ."/core/commonobject.class.php");
 
 
 /**
diff --git a/htdocs/compta/bank/bankcateg.class.php b/htdocs/compta/bank/bankcateg.class.php
index 5d89eec7fb7..a60f7eeee39 100644
--- a/htdocs/compta/bank/bankcateg.class.php
+++ b/htdocs/compta/bank/bankcateg.class.php
@@ -27,7 +27,7 @@
  */
 
 // Put here all includes required by your class file
-//require_once(DOL_DOCUMENT_ROOT."/commonobject.class.php");
+//require_once(DOL_DOCUMENT_ROOT."/core/commonobject.class.php");
 //require_once(DOL_DOCUMENT_ROOT."/societe.class.php");
 //require_once(DOL_DOCUMENT_ROOT."/product/product.class.php");
 
diff --git a/htdocs/compta/chargesociales.class.php b/htdocs/compta/chargesociales.class.php
index 7009ff4bb67..a0a6cb77904 100644
--- a/htdocs/compta/chargesociales.class.php
+++ b/htdocs/compta/chargesociales.class.php
@@ -24,7 +24,7 @@
  *		\version    $Id$
  */
 
-require_once(DOL_DOCUMENT_ROOT."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT."/core/commonobject.class.php");
 
 
 /**     \class      ChargeSociales
diff --git a/htdocs/compta/deplacement/deplacement.class.php b/htdocs/compta/deplacement/deplacement.class.php
index 0ff69f4a875..bf016d8861f 100644
--- a/htdocs/compta/deplacement/deplacement.class.php
+++ b/htdocs/compta/deplacement/deplacement.class.php
@@ -25,7 +25,7 @@
  *      \version    $Id$
  */
 
-require_once(DOL_DOCUMENT_ROOT ."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT ."/core/commonobject.class.php");
 
 /**
  *      \class      Deplacement
diff --git a/htdocs/compta/dons/don.class.php b/htdocs/compta/dons/don.class.php
index 3617f8621e1..8b62dddb45d 100644
--- a/htdocs/compta/dons/don.class.php
+++ b/htdocs/compta/dons/don.class.php
@@ -25,7 +25,7 @@
  *		\version    $Id$
  */
 
-require_once(DOL_DOCUMENT_ROOT ."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT ."/core/commonobject.class.php");
 
 
 /**
diff --git a/htdocs/compta/facture/facture.class.php b/htdocs/compta/facture/facture.class.php
index 27e351300ae..67670a9bc84 100644
--- a/htdocs/compta/facture/facture.class.php
+++ b/htdocs/compta/facture/facture.class.php
@@ -30,7 +30,7 @@
  *	\version    $Id$
  */
 
-require_once(DOL_DOCUMENT_ROOT ."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT ."/core/commonobject.class.php");
 require_once(DOL_DOCUMENT_ROOT ."/product/product.class.php");
 require_once(DOL_DOCUMENT_ROOT ."/client.class.php");
 
diff --git a/htdocs/compta/paiement/cheque/remisecheque.class.php b/htdocs/compta/paiement/cheque/remisecheque.class.php
index 8cd10a406af..040ced6efcf 100644
--- a/htdocs/compta/paiement/cheque/remisecheque.class.php
+++ b/htdocs/compta/paiement/cheque/remisecheque.class.php
@@ -25,7 +25,7 @@
  *	\version    $Id$
  */
 
-require_once(DOL_DOCUMENT_ROOT ."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT ."/core/commonobject.class.php");
 
 
 /**
diff --git a/htdocs/compta/prelevement/bon-prelevement.class.php b/htdocs/compta/prelevement/bon-prelevement.class.php
index 7ab30bcdfc7..313f518e247 100644
--- a/htdocs/compta/prelevement/bon-prelevement.class.php
+++ b/htdocs/compta/prelevement/bon-prelevement.class.php
@@ -24,7 +24,7 @@
         \version    $Id$
 */
 
-require_once(DOL_DOCUMENT_ROOT."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT."/core/commonobject.class.php");
 require_once(DOL_DOCUMENT_ROOT."/compta/facture/facture.class.php");
 require_once(DOL_DOCUMENT_ROOT."/societe.class.php");
 
diff --git a/htdocs/compta/tva/tva.class.php b/htdocs/compta/tva/tva.class.php
index 2189fca1a36..5b24a52ff2e 100644
--- a/htdocs/compta/tva/tva.class.php
+++ b/htdocs/compta/tva/tva.class.php
@@ -25,7 +25,7 @@
 */
 
 // Put here all includes required by your class file
-require_once(DOL_DOCUMENT_ROOT ."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT ."/core/commonobject.class.php");
 
 
 /**
@@ -381,7 +381,7 @@ class Tva extends CommonObject
     }
 
     /*
-     *      \brief      Tva payée
+     *      \brief      Tva pay�e
      *
      */
 
@@ -421,8 +421,8 @@ class Tva extends CommonObject
 
 
     /*
-     *      \brief      Tva réglée
-     *                  Total de la TVA réglee aupres de qui de droit
+     *      \brief      Tva r�gl�e
+     *                  Total de la TVA r�glee aupres de qui de droit
      *
      */
 
@@ -528,7 +528,7 @@ class Tva extends CommonObject
 									
                     $bank_line_id = $acc->addline($this->datep, $this->paymenttype, $this->label, -abs($this->amount), '', '', $user);
             	  
-                    // Mise a jour fk_bank dans llx_tva. On connait ainsi la ligne de tva qui a généré l'écriture bancaire
+                    // Mise a jour fk_bank dans llx_tva. On connait ainsi la ligne de tva qui a g�n�r� l'�criture bancaire
                     if ($bank_line_id > 0)
 					{
                         $this->update_fk_bank($bank_line_id);
@@ -575,7 +575,7 @@ class Tva extends CommonObject
     }
 	
     /**
-     *      \brief      Mise a jour du lien entre le paiement tva et la ligne générée dans llx_bank
+     *      \brief      Mise a jour du lien entre le paiement tva et la ligne g�n�r�e dans llx_bank
      *      \param      id_bank     Id compte bancaire
 	 *		\return		int			<0 if KO, >0 if OK
      */
diff --git a/htdocs/contact/contact.class.php b/htdocs/contact/contact.class.php
index 8134bf6af56..2f72135a593 100644
--- a/htdocs/contact/contact.class.php
+++ b/htdocs/contact/contact.class.php
@@ -28,7 +28,7 @@
  *	\version    $Id$
  */
 
-require_once(DOL_DOCUMENT_ROOT ."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT ."/core/commonobject.class.php");
 
 
 /**
diff --git a/htdocs/contrat/contrat.class.php b/htdocs/contrat/contrat.class.php
index c8c9e8a5619..ae9e1828e99 100644
--- a/htdocs/contrat/contrat.class.php
+++ b/htdocs/contrat/contrat.class.php
@@ -26,7 +26,7 @@
  *	\version    $Id$
  */
 
-require_once(DOL_DOCUMENT_ROOT."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT."/core/commonobject.class.php");
 require_once(DOL_DOCUMENT_ROOT."/product/product.class.php");
 require_once(DOL_DOCUMENT_ROOT."/lib/price.lib.php");
 
diff --git a/htdocs/commonobject.class.php b/htdocs/core/commonobject.class.php
similarity index 100%
rename from htdocs/commonobject.class.php
rename to htdocs/core/commonobject.class.php
diff --git a/htdocs/core/events.class.php b/htdocs/core/events.class.php
index 4a6e216ef7c..d136bae839c 100644
--- a/htdocs/core/events.class.php
+++ b/htdocs/core/events.class.php
@@ -27,7 +27,7 @@
  */
 
 // Put here all includes required by your class file
-//require_once(DOL_DOCUMENT_ROOT."/commonobject.class.php");
+//require_once(DOL_DOCUMENT_ROOT."/core/commonobject.class.php");
 //require_once(DOL_DOCUMENT_ROOT."/societe.class.php");
 //require_once(DOL_DOCUMENT_ROOT."/product/product.class.php");
 
diff --git a/htdocs/expedition/expedition.class.php b/htdocs/expedition/expedition.class.php
index 45deea2ac41..53838fb3f50 100644
--- a/htdocs/expedition/expedition.class.php
+++ b/htdocs/expedition/expedition.class.php
@@ -25,7 +25,7 @@
  *  \version    $Id$
  */
 
-require_once(DOL_DOCUMENT_ROOT."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT."/core/commonobject.class.php");
 if ($conf->propal->enabled) require_once(DOL_DOCUMENT_ROOT."/comm/propal/propal.class.php");
 if ($conf->commande->enabled) require_once(DOL_DOCUMENT_ROOT."/commande/commande.class.php");
 
diff --git a/htdocs/fichinter/fichinter.class.php b/htdocs/fichinter/fichinter.class.php
index 594334b8acc..a54de98617e 100644
--- a/htdocs/fichinter/fichinter.class.php
+++ b/htdocs/fichinter/fichinter.class.php
@@ -24,7 +24,7 @@
  *		\version    $Id$
  */
 
-require_once(DOL_DOCUMENT_ROOT ."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT ."/core/commonobject.class.php");
 
 
 /**
diff --git a/htdocs/livraison/livraison.class.php b/htdocs/livraison/livraison.class.php
index a097f61085a..a8984e4d59a 100644
--- a/htdocs/livraison/livraison.class.php
+++ b/htdocs/livraison/livraison.class.php
@@ -26,7 +26,7 @@
  *  \version    $Id$
  */
 
-require_once(DOL_DOCUMENT_ROOT."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT."/core/commonobject.class.php");
 require_once(DOL_DOCUMENT_ROOT."/expedition/expedition.class.php");
 require_once(DOL_DOCUMENT_ROOT."/product/stock/mouvementstock.class.php");
 if ($conf->propal->enabled)   require_once(DOL_DOCUMENT_ROOT."/comm/propal/propal.class.php");
diff --git a/htdocs/product/product.class.php b/htdocs/product/product.class.php
index 7791cced796..ef3f3860951 100644
--- a/htdocs/product/product.class.php
+++ b/htdocs/product/product.class.php
@@ -27,7 +27,7 @@
  *	\brief      Fichier de la classe des produits predefinis
  *	\version    $Id$
  */
-require_once(DOL_DOCUMENT_ROOT ."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT ."/core/commonobject.class.php");
 
 
 /**
diff --git a/htdocs/product/stock/entrepot.class.php b/htdocs/product/stock/entrepot.class.php
index b23ac9c9bc8..3496621a441 100644
--- a/htdocs/product/stock/entrepot.class.php
+++ b/htdocs/product/stock/entrepot.class.php
@@ -25,7 +25,7 @@
  *  \version    $Id$
  */
 
-require_once(DOL_DOCUMENT_ROOT."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT."/core/commonobject.class.php");
 
 
 /**
diff --git a/htdocs/projet/project.class.php b/htdocs/projet/project.class.php
index af509337fe2..9f04e80005e 100644
--- a/htdocs/projet/project.class.php
+++ b/htdocs/projet/project.class.php
@@ -24,7 +24,7 @@
  *		\brief      Fichier de la classe de gestion des projets
  *		\version    $Id$
  */
-require_once(DOL_DOCUMENT_ROOT ."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT ."/core/commonobject.class.php");
 
 /**
  *		\class      Project
diff --git a/htdocs/service.class.php b/htdocs/service.class.php
index 8ffd02a199c..6a33bee8b69 100644
--- a/htdocs/service.class.php
+++ b/htdocs/service.class.php
@@ -23,7 +23,7 @@
  *       \brief      Fichier de la classe des services predefinis
  *       \version    $Id$
  */
-require_once(DOL_DOCUMENT_ROOT ."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT ."/core/commonobject.class.php");
 
 
 /**
diff --git a/htdocs/societe.class.php b/htdocs/societe.class.php
index 53ad8734855..fd1fe3fef6a 100644
--- a/htdocs/societe.class.php
+++ b/htdocs/societe.class.php
@@ -29,7 +29,7 @@
  *	\brief      File for third party class
  *	\version    $Id$
  */
-require_once(DOL_DOCUMENT_ROOT."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT."/core/commonobject.class.php");
 
 
 /**
diff --git a/htdocs/user/user.class.php b/htdocs/user/user.class.php
index bedb2e89cc1..860ba3eeb60 100644
--- a/htdocs/user/user.class.php
+++ b/htdocs/user/user.class.php
@@ -35,7 +35,7 @@
  \version    $Id$
  */
 
-require_once(DOL_DOCUMENT_ROOT ."/commonobject.class.php");
+require_once(DOL_DOCUMENT_ROOT ."/core/commonobject.class.php");
 
 
 /**