diff --git a/htdocs/product/canvas/product.livre.class.php b/htdocs/product/canvas/product.livre.class.php
new file mode 100644
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+++ b/htdocs/product/canvas/product.livre.class.php
@@ -0,0 +1,192 @@
+<?php
+/* Copyright (C) 2006 Rodolphe Quiedeville <rodolphe@quiedeville.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * $Id$
+ * $Source$
+ */
+
+/**
+   \file       htdocs/product/canvas/product.livre.class.php
+   \ingroup    produit
+   \brief      Fichier de la classe des produits specifiques de type livre
+   \version    $Revision$
+*/
+
+
+/**
+   \class      ProductLivre
+   \brief      Classe permettant la gestion des livres, cette classe surcharge la classe produit
+*/
+
+class ProductLivre extends Product
+{
+  /**
+   *    \brief      Constructeur de la classe
+   *    \param      DB          Handler accès base de données
+   *    \param      id          Id produit (0 par defaut)
+   */
+  function ProductLivre($DB, $id=0)
+  {
+    $this->db = $DB;
+    $this->id = $id ;
+    $this->canvas = "livre";
+  }
+  /**
+   *    \brief      Lecture des donnees dans la base
+   *    \param      id          Id livre ('' par defaut)
+   *    \param      ref         Reference du livre ('' par defaut)
+   */
+  function FetchCanvas($id='', $ref='')
+  {
+    $result = $this->fetch($id,$ref);
+
+    if ($result >= 0)
+      {
+	$sql = "SELECT rowid,isbn,ean,pages,px_feuillet";
+
+	$sql.= " FROM ".MAIN_DB_PREFIX."product_cnv_livre";
+	if ($id) $sql.= " WHERE rowid = '".$id."'";
+	if ($ref) $sql.= " WHERE ref = '".addslashes($ref)."'";
+	
+	$result = $this->db->query($sql) ;
+
+	if ( $result )
+	  {
+	    $result = $this->db->fetch_array();
+
+	    $this->isbn               = $result["isbn"];
+	    $this->ean                = $result["ean"];
+	    $this->pages              = $result["pages"];
+	    $this->px_feuillet        = $result["px_feuillet"];
+
+	    $this->db->free();
+	  }
+
+      }
+
+    return $result;
+  }
+  /**
+   *    \brief      Mise a jour des donnees dans la base
+   *    \param      datas        Tableau de donnees
+   */
+  function UpdateCanvas($datas)
+  {
+    $isbna = trim($datas["isbna"]);
+    $isbnb = trim($datas["isbnb"]);
+
+    $sp = 9 - (strlen($isbna) + strlen($isbnb) );
+    $isbnc = substr( str_repeat('0',10) . $datas["isbnc"], -$sp , $sp); // on complete a 10
+
+    $key = $this->calculate_isbn_key($isbna.$isbnb.$isbnc);
+
+    $isbn = $isbna.'-'.$isbnb.'-'.$isbnc.'-'.$key;
+
+    $ean = '978'.$isbna.$isbnb.$isbnc;
+
+    $ean = $ean . $this->calculate_ean_key($ean);
+
+    $pages = trim($datas["pages"]);
+    $px_feuillet = trim($datas["px_feuillet"]);
+
+    $sql = "UPDATE ".MAIN_DB_PREFIX."product_cnv_livre ";
+    $sql .= " SET isbn = '$isbn'";
+    $sql .= " , ean = '$ean'";
+    $sql .= " , pages = '$pages'";
+    $sql .= " , px_feuillet = '$px_feuillet'";
+    $sql .= " WHERE rowid = " . $this->id;
+
+    if ( $this->db->query($sql) )
+      {
+
+      }
+  }
+  /**
+   *    \brief      Calcule la clef d'un numero ISBN
+   *    \param      isbn        Clef International Standard Book Number
+   *    \note       source http://fr.wikipedia.org/wiki/ISBN
+   */
+  function calculate_isbn_key($isbn)
+  {
+    $sum = 0;
+    for ($i = 0 ; $i < 9 ; $i++)
+      {
+	$sum += $isbn{$i} * (10 - $i);
+      }
+
+    $key = 11 - ($sum % 11);
+
+    if ($key == 0)
+      $key = 1;
+
+    if ($key == 11)
+      $key = 'X';
+
+    return $key;
+  }
+  /**
+   *    \brief      Calcule la clef d'un numero EAN 13
+   *    \param      ean        Clef EAN
+   *    \note       source http://fr.wikipedia.org/wiki/ISBN
+   */
+  function calculate_ean_key($ean)
+  {
+    $sum = 0;
+    for ($i = 0 ; $i < 12 ; $i = $i+2)
+      {
+	$sum += $ean{$i};
+      }
+    for ($i = 1 ; $i < 12 ; $i = $i+2)
+      {
+	$sum += 3 * $ean{$i};
+      }
+
+    $key = ($sum % 10);
+
+    return $key;
+  }
+   /**
+   *    \brief      Assigne les valeurs pour les templates Smarty
+   *    \param      smarty     Instance de smarty
+   */
+  function assign_values(&$smarty)
+  {
+    $smarty->assign('prod_canvas',  'livre');
+    $smarty->assign('prod_id',      $this->id);
+
+    $smarty->assign('prod_isbn',    $this->isbn);
+
+    $isbn_parts = explode('-',$this->isbn);
+    
+    $smarty->assign('prod_isbna',    $isbn_parts[0]);
+    $smarty->assign('prod_isbnb',    $isbn_parts[1]);
+    $smarty->assign('prod_isbnc',    $isbn_parts[2]);
+
+    $smarty->assign('prod_ean',     $this->ean);
+
+    $smarty->assign('prod_isbn13',  '978-'.substr($this->isbn,0,12).substr($this->ean,-1,1));
+
+    $smarty->assign('prod_ref',     $this->ref);
+    $smarty->assign('prod_pages',   $this->pages);
+    $smarty->assign('prod_pxfeuil', $this->px_feuillet);
+    $smarty->assign('prod_pxvente', price($this->price));
+
+    $smarty->assign('prod_label', $this->libelle);
+  }
+
+}
+?>