diff --git a/install/upgrade_1.3.0.php b/install/upgrade_1.3.0.php
new file mode 100644
index 000000000..f5d650e6b
--- /dev/null
+++ b/install/upgrade_1.3.0.php
@@ -0,0 +1,130 @@
+<?php
+// +-----------------------------------------------------------------------+
+// | PhpWebGallery - a PHP based picture gallery                           |
+// | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
+// | Copyright (C) 2003-2005 PhpWebGallery Team - http://phpwebgallery.net |
+// +-----------------------------------------------------------------------+
+// | branch        : BSF (Best So Far)
+// | file          : $RCSfile$
+// | last update   : $Date: 2005-01-08 00:10:51 +0100 (sam, 08 jan 2005) $
+// | last modifier : $Author: plg $
+// | revision      : $Revision: 675 $
+// +-----------------------------------------------------------------------+
+// | 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                                          |
+// |                                                                       |
+// | 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.                                                                  |
+// +-----------------------------------------------------------------------+
+
+
+/**
+ * Upgrade from 1.3.0 to 1.3.1
+ */
+
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die ('This page cannot be loaded directly, load upgrade.php');
+}
+else
+{
+  if (!defined('PHPWG_IN_UPGRADE') or !PHPWG_IN_UPGRADE)
+  {
+    die ('Hacking attempt!');
+  }
+}
+
+$queries = array(
+  "
+ALTER TABLE phpwebgallery_categories
+  ADD COLUMN uppercats varchar(255) NOT NULL default ''
+;",
+
+  "
+CREATE TABLE phpwebgallery_user_category (
+  user_id smallint(5) unsigned NOT NULL default '0'
+)
+;",
+
+  "
+ALTER TABLE phpwebgallery_categories
+  ADD INDEX id (id)
+;",
+
+  "
+ALTER TABLE phpwebgallery_categories
+  ADD INDEX id_uppercat (id_uppercat)
+;",
+
+  "
+ALTER TABLE phpwebgallery_image_category
+  ADD INDEX category_id (category_id)
+;",
+
+  "
+ALTER TABLE phpwebgallery_image_category
+  ADD INDEX image_id (image_id)
+;",
+  );
+
+foreach ($queries as $query)
+{
+  $query = str_replace('phpwebgallery_', PREFIX_TABLE, $query);
+  pwg_query($query);
+}
+// filling the new column categories.uppercats
+$id_uppercats = array();
+
+$query = '
+SELECT id, id_uppercat
+  FROM '.CATEGORIES_TABLE.'
+;';
+$result = pwg_query($query);
+while ($row = mysql_fetch_array($result))
+{
+  if (!isset($row['id_uppercat']) or $row['id_uppercat'] == '')
+  {
+    $row['id_uppercat'] = 'NULL';
+  }
+  $id_uppercats[$row['id']] = $row['id_uppercat'];
+}
+
+$datas = array();
+
+foreach (array_keys($id_uppercats) as $id)
+{
+  $data = array();
+  $data['id'] = $id;
+  $uppercats = array();
+  
+  array_push($uppercats, $id);
+  while (isset($id_uppercats[$id]) and $id_uppercats[$id] != 'NULL')
+  {
+    array_push($uppercats, $id_uppercats[$id]);
+    $id = $id_uppercats[$id];
+  }
+  $data['uppercats'] = implode(',', array_reverse($uppercats));
+
+  array_push($datas, $data);
+}
+
+mass_updates(
+  CATEGORIES_TABLE,
+  array(
+    'primary' => array('id'),
+    'update' => array('uppercats')
+    ),
+  $datas
+  );
+
+// now we upgrade from 1.3.1 to 1.6.0
+include_once(PHPWG_ROOT_PATH.'install/upgrade_1.3.1.php');
+?>
\ No newline at end of file
diff --git a/install/upgrade_1.3.1.php b/install/upgrade_1.3.1.php
new file mode 100644
index 000000000..3e1e42c14
--- /dev/null
+++ b/install/upgrade_1.3.1.php
@@ -0,0 +1,606 @@
+<?php
+// +-----------------------------------------------------------------------+
+// | PhpWebGallery - a PHP based picture gallery                           |
+// | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
+// | Copyright (C) 2003-2005 PhpWebGallery Team - http://phpwebgallery.net |
+// +-----------------------------------------------------------------------+
+// | branch        : BSF (Best So Far)
+// | file          : $RCSfile$
+// | last update   : $Date: 2005-01-08 00:10:51 +0100 (sam, 08 jan 2005) $
+// | last modifier : $Author: plg $
+// | revision      : $Revision: 675 $
+// +-----------------------------------------------------------------------+
+// | 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                                          |
+// |                                                                       |
+// | 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.                                                                  |
+// +-----------------------------------------------------------------------+
+
+/**
+ * Upgrade from 1.3.x (x >= 1) to 1.4.0
+ */
+
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die ('This page cannot be loaded directly, load upgrade.php');
+}
+else
+{
+  if (!defined('PHPWG_IN_UPGRADE') or !PHPWG_IN_UPGRADE)
+  {
+    die ('Hacking attempt!');
+  }
+}
+
+// save data before deletion
+$query = '
+SELECT prefix_thumbnail, mail_webmaster
+  FROM '.PREFIX_TABLE.'config
+;';
+$save = mysql_fetch_array(mysql_query($query));
+
+$queries = array(
+  "
+DROP TABLE phpwebgallery_config
+;",
+
+  "
+CREATE TABLE phpwebgallery_config (
+  param varchar(40) NOT NULL default '',
+  value varchar(255) default NULL,
+  comment varchar(255) default NULL,
+  PRIMARY KEY  (param)
+) TYPE=MyISAM COMMENT='configuration table'
+;",
+
+  "
+ALTER TABLE phpwebgallery_categories
+  CHANGE COLUMN site_id site_id tinyint(4) unsigned default '1'
+;",
+
+  "
+ALTER TABLE phpwebgallery_categories
+  ADD COLUMN commentable enum('true','false') NOT NULL default 'true'
+;",
+  
+  "
+ALTER TABLE phpwebgallery_categories
+  ADD COLUMN global_rank varchar(255) default NULL
+;",
+
+  "
+ALTER TABLE phpwebgallery_categories
+  ADD INDEX categories_i2 (id_uppercat)
+;",
+
+  "
+ALTER TABLE phpwebgallery_comments
+  ADD COLUMN date_temp int(11) unsigned
+;",
+
+  "
+UPDATE phpwebgallery_comments
+  SET date_temp = date
+;",
+  
+  "
+ALTER TABLE phpwebgallery_comments
+  CHANGE COLUMN date date datetime NOT NULL default '0000-00-00 00:00:00'
+;",
+
+  "
+UPDATE phpwebgallery_comments
+  SET date = FROM_UNIXTIME(date_temp)
+;",
+
+  "
+ALTER TABLE phpwebgallery_comments
+  DROP COLUMN date_temp
+;",
+
+  "
+ALTER TABLE phpwebgallery_favorites
+  DROP INDEX user_id
+;",
+
+  "
+ALTER TABLE phpwebgallery_favorites
+  ADD PRIMARY KEY (user_id,image_id)
+;",
+
+  "
+ALTER TABLE phpwebgallery_history
+  ADD COLUMN date_temp int(11) unsigned
+;",
+
+  "
+UPDATE phpwebgallery_history
+  SET date_temp = date
+;",
+  
+  "
+ALTER TABLE phpwebgallery_history
+  CHANGE COLUMN date date datetime NOT NULL default '0000-00-00 00:00:00'
+;",
+
+  "
+UPDATE phpwebgallery_history
+  SET date = FROM_UNIXTIME(date_temp)
+;",
+
+  "
+ALTER TABLE phpwebgallery_history
+  DROP COLUMN date_temp
+;",
+
+  "
+ALTER TABLE phpwebgallery_history
+  ADD INDEX history_i1 (date)
+;",
+
+  "
+ALTER TABLE phpwebgallery_image_category
+  ADD INDEX image_category_i1 (image_id),
+  ADD INDEX image_category_i2 (category_id)
+;",
+
+  "
+ALTER TABLE phpwebgallery_images
+  CHANGE COLUMN tn_ext tn_ext varchar(4) default ''
+;",
+
+  "
+ALTER TABLE phpwebgallery_images
+  ADD COLUMN path varchar(255) NOT NULL default ''
+;",
+
+  "
+ALTER TABLE phpwebgallery_images
+  ADD COLUMN date_metadata_update date default NULL
+;",
+
+  "
+ALTER TABLE phpwebgallery_images
+  ADD COLUMN average_rate float(5,2) unsigned default NULL
+;",
+
+  "
+ALTER TABLE phpwebgallery_images
+  ADD COLUMN representative_ext varchar(4) default NULL
+;",
+
+  "
+ALTER TABLE phpwebgallery_images
+  DROP INDEX storage_category_id
+;",
+
+  "
+ALTER TABLE phpwebgallery_images
+  ADD INDEX images_i1 (storage_category_id)
+;",
+
+  "
+ALTER TABLE phpwebgallery_images
+  ADD INDEX images_i2 (date_available)
+;",
+
+  "
+ALTER TABLE phpwebgallery_images
+  ADD INDEX images_i3 (average_rate)
+;",
+
+  "
+ALTER TABLE phpwebgallery_images
+  ADD INDEX images_i4 (hit)
+;",
+
+  "
+ALTER TABLE phpwebgallery_images
+  ADD INDEX images_i5 (date_creation)
+;",
+  
+  "
+ALTER TABLE phpwebgallery_sessions
+  DROP COLUMN ip
+;",
+
+    "
+ALTER TABLE phpwebgallery_sessions
+  ADD COLUMN expiration_temp int(11) unsigned
+;",
+
+  "
+UPDATE phpwebgallery_sessions
+  SET expiration_temp = expiration
+;",
+  
+  "
+ALTER TABLE phpwebgallery_sessions
+  CHANGE COLUMN expiration expiration datetime NOT NULL default '0000-00-00 00:00:00'
+;",
+
+  "
+UPDATE phpwebgallery_sessions
+  SET expiration = FROM_UNIXTIME(expiration_temp)
+;",
+
+  "
+ALTER TABLE phpwebgallery_sessions
+  DROP COLUMN expiration_temp
+;",
+  
+  "
+ALTER TABLE phpwebgallery_sites
+  DROP INDEX galleries_url
+;",
+
+  "
+ALTER TABLE phpwebgallery_sites
+  ADD UNIQUE sites_ui1 (galleries_url)
+;",
+
+  "
+DROP TABLE phpwebgallery_user_category
+;",
+  
+  "
+ALTER TABLE phpwebgallery_users
+  DROP COLUMN long_period
+;",
+
+  "
+ALTER TABLE phpwebgallery_users
+  DROP COLUMN short_period
+;",
+
+  "
+ALTER TABLE phpwebgallery_users
+  ADD COLUMN recent_period tinyint(3) unsigned NOT NULL default '7'
+;",
+
+  "
+ALTER TABLE phpwebgallery_users
+  DROP INDEX username
+;",
+
+  "
+ALTER TABLE phpwebgallery_users
+  ADD UNIQUE users_ui1 (username)
+;",
+  
+  "
+CREATE TABLE phpwebgallery_rate (
+  user_id smallint(5) unsigned NOT NULL default '0',
+  element_id mediumint(8) unsigned NOT NULL default '0',
+  rate tinyint(2) unsigned NOT NULL default '0',
+  PRIMARY KEY  (user_id,element_id)
+) TYPE=MyISAM
+;",
+
+  "
+CREATE TABLE phpwebgallery_user_forbidden (
+  user_id smallint(5) unsigned NOT NULL default '0',
+  need_update enum('true','false') NOT NULL default 'true',
+  forbidden_categories text,
+  PRIMARY KEY  (user_id)
+) TYPE=MyISAM
+;",
+
+  "
+UPDATE phpwebgallery_users
+  SET language = 'en_UK.iso-8859-1'
+    , template = 'default'
+;",
+
+  "
+DELETE FROM phpwebgallery_user_access
+;",
+
+  "
+DELETE FROM phpwebgallery_group_access
+;"
+
+  );
+
+foreach ($queries as $query)
+{
+  $query = str_replace('phpwebgallery_', PREFIX_TABLE, $query);
+  pwg_query($query);
+}
+
+//
+// check indexes
+//
+$indexes_of = array(
+  'categories' => array(
+    'categories_i2' => array(
+      'columns' => array('id_uppercat'),
+      'unique' => false,
+      )
+    ),
+  'image_category' => array(
+    'image_category_i1' => array(
+      'columns' => array('image_id'),
+      'unique' => false,
+      ),
+    'image_category_i2' => array(
+      'columns' => array('category_id'),
+      'unique' => false,
+      ),
+    ),
+  );
+
+foreach (array_keys($indexes_of) as $table)
+{
+  $existing_indexes = array();
+  
+  $query = '
+SHOW INDEX
+  FROM '.PREFIX_TABLE.$table.'
+;';
+  $result = pwg_query($query);
+  while ($row = mysql_fetch_array($result))
+  {
+    if ($row['Key_name'] != 'PRIMARY')
+    {
+      if (!in_array($row['Key_name'], array_keys($indexes_of[$table])))
+      {
+        $query = '
+ALTER TABLE '.PREFIX_TABLE.$table.'
+  DROP INDEX '.$row['Key_name'].'
+;';
+        pwg_query($query);
+      }
+      else
+      {
+        array_push($existing_indexes, $row['Key_name']);
+      }
+    }
+  }
+
+  foreach ($indexes_of[$table] as $index_name => $index)
+  {
+    if (!in_array($index_name, $existing_indexes))
+    {
+      $query = '
+ALTER TABLE '.PREFIX_TABLE.$table.'
+  ADD '.($index['unique'] ? 'UNIQUE' : 'INDEX').' '
+        .$index_name.' ('.implode(',', $index['columns']).')
+;';
+      pwg_query($query);
+    }
+  }
+}
+
+//
+// insert params in new configuration table
+//
+$params = array(
+  array(
+    'param'   => 'prefix_thumbnail',
+    'value'   => $save['prefix_thumbnail'],
+    'comment' => 'thumbnails filename prefix'
+    ),
+  array(
+    'param'   => 'mail_webmaster',
+    'value'   => $save['mail_webmaster'],
+    'comment' => 'webmaster mail'
+    ),
+  array(
+    'param'   => 'default_language',
+    'value'   => 'en_UK.iso-8859-1',
+    'comment' => 'Default gallery language'
+    ),
+  array(
+    'param'   => 'default_template',
+    'value'   => 'default',
+    'comment' => 'Default gallery style'
+    ),
+  array(
+    'param'   => 'default_maxwidth',
+    'value'   => '',
+    'comment' => 'maximum width authorized for displaying images'
+    ),
+  array(
+    'param'   => 'default_maxheight',
+    'value'   => '',
+    'comment' => 'maximum height authorized for the displaying images'
+    ),
+  array(
+    'param'   => 'nb_comment_page',
+    'value'   => '10',
+    'comment' => 'number of comments to display on each page'
+    ),
+  array(
+    'param'   => 'upload_maxfilesize',
+    'value'   => '150',
+    'comment' => 'maximum filesize for the uploaded pictures'
+    ),
+  array(
+    'param'   => 'upload_maxwidth',
+    'value'   => '800',
+    'comment' => 'maximum width authorized for the uploaded images'
+    ),
+  array(
+    'param'   => 'upload_maxheight',
+    'value'   => '600',
+    'comment' => 'maximum height authorized for the uploaded images'
+    ),
+  array(
+    'param'   => 'upload_maxwidth_thumbnail',
+    'value'   => '150',
+    'comment' => 'maximum width authorized for the uploaded thumbnails'
+    ),
+  array(
+    'param'   => 'upload_maxheight_thumbnail',
+    'value'   => '100',
+    'comment' => 'maximum height authorized for the uploaded thumbnails'
+    ),
+  array(
+    'param'   => 'log',
+    'value'   => 'false',
+    'comment' => 'keep an history of visits on your website'
+    ),
+  array(
+    'param'   => 'comments_validation',
+    'value'   => 'false',
+    'comment' => 'administrators validate users comments before becoming visible'
+    ),
+  array(
+    'param'   => 'comments_forall',
+    'value'   => 'false',
+    'comment' => 'even guest not registered can post comments'
+    ),
+  array(
+    'param'   => 'mail_notification',
+    'value'   => 'false',
+    'comment' => 'automated mail notification for adminsitrators'
+    ),
+  array(
+    'param'   => 'nb_image_line',
+    'value'   => '5',
+    'comment' => 'Number of images displayed per row'
+    ),
+  array(
+    'param'   => 'nb_line_page',
+    'value'   => '3',
+    'comment' => 'Number of rows displayed per page'
+    ),
+  array(
+    'param'   => 'recent_period',
+    'value'   => '7',
+    'comment' => 'Period within which pictures are displayed as new (in days)'
+    ),
+  array(
+    'param'   => 'auto_expand',
+    'value'   => 'false',
+    'comment' => 'Auto expand of the category tree'
+    ),
+  array(
+    'param'   => 'show_nb_comments',
+    'value'   => 'false',
+    'comment' => 'Show the number of comments under the thumbnails'
+    ),
+  array(
+    'param'   => 'use_iptc',
+    'value'   => 'false',
+    'comment' => 'Use IPTC data during database synchronization with files metadata'
+    ),
+  array(
+    'param'   => 'use_exif',
+    'value'   => 'false',
+    'comment' => 'Use EXIF data during database synchronization with files metadata'
+    ),
+  array(
+    'param'   => 'show_iptc',
+    'value'   => 'false',
+    'comment' => 'Show IPTC metadata on picture.php if asked by user'
+    ),
+  array(
+    'param'   => 'show_exif',
+    'value'   => 'true',
+    'comment' => 'Show EXIF metadata on picture.php if asked by user'
+    ),
+  array(
+    'param'   => 'authorize_remembering',
+    'value'   => 'true',
+    'comment' => 'Authorize users to be remembered, see $conf{remember_me_length}'
+    ),
+  array(
+    'param'   => 'gallery_locked',
+    'value'   => 'false',
+    'comment' => 'Lock your gallery temporary for non admin users'
+    ),
+  );
+
+mass_inserts(
+  CONFIG_TABLE,
+  array_keys($params[0]),
+  $params
+  );
+
+// refresh calculated datas
+ordering();
+update_global_rank();
+update_category();
+
+// update calculated field "images.path"
+$cat_ids = array();
+
+$query = '
+SELECT DISTINCT(storage_category_id) AS unique_storage_category_id
+  FROM '.IMAGES_TABLE.'
+;';
+$result = pwg_query($query);
+while ($row = mysql_fetch_array($result))
+{
+  array_push($cat_ids, $row['unique_storage_category_id']);
+}
+$fulldirs = get_fulldirs($cat_ids);
+
+foreach ($cat_ids as $cat_id)
+{
+  $query = '
+UPDATE '.IMAGES_TABLE.'
+  SET path = CONCAT(\''.$fulldirs[$cat_id].'\',\'/\',file)
+  WHERE storage_category_id = '.$cat_id.'
+;';
+  pwg_query($query);
+}
+
+// all sub-categories of private categories become private
+$cat_ids = array();
+
+$query = '
+SELECT id
+  FROM '.CATEGORIES_TABLE.'
+  WHERE status = \'private\'
+;';
+$result = pwg_query($query);
+while ($row = mysql_fetch_array($result))
+{
+  array_push($cat_ids, $row['id']);
+}
+
+if (count($cat_ids) > 0)
+{
+  $privates = get_subcat_ids($cat_ids);
+
+  $query = '
+UPDATE '.CATEGORIES_TABLE.'
+  SET status = \'private\'
+  WHERE id IN ('.implode(',', $privates).')
+;';
+  pwg_query($query);
+}
+
+$page['infos'] = array_merge(
+  $page['infos'],
+  array(
+    'all sub-categories of private categories become private',
+    
+    'user permissions and group permissions have been erased',
+
+    'only thumbnails prefix and webmaster mail address have been saved from
+previous configuration',
+
+    'in include/mysql.inc.php, before
+<pre style="background-color:lightgray">?&gt;</pre>
+insert
+<pre style="background-color:lightgray">define(\'PHPWG_INSTALLED\', true);<pre>'
+    )
+  );
+
+
+// now we upgrade from 1.4.0
+include_once(PHPWG_ROOT_PATH.'install/upgrade_1.4.0.php');
+?>
\ No newline at end of file
diff --git a/install/upgrade_1.4.0.php b/install/upgrade_1.4.0.php
new file mode 100644
index 000000000..2d98cadf6
--- /dev/null
+++ b/install/upgrade_1.4.0.php
@@ -0,0 +1,296 @@
+<?php
+// +-----------------------------------------------------------------------+
+// | PhpWebGallery - a PHP based picture gallery                           |
+// | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
+// | Copyright (C) 2003-2005 PhpWebGallery Team - http://phpwebgallery.net |
+// +-----------------------------------------------------------------------+
+// | branch        : BSF (Best So Far)
+// | file          : $RCSfile$
+// | last update   : $Date: 2006-04-19 22:54:13 +0200 (mer, 19 avr 2006) $
+// | last modifier : $Author: plg $
+// | revision      : $Revision: 1209 $
+// +-----------------------------------------------------------------------+
+// | 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                                          |
+// |                                                                       |
+// | 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.                                                                  |
+// +-----------------------------------------------------------------------+
+
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die ('This page cannot be loaded directly, load upgrade.php');
+}
+else
+{
+  if (!defined('PHPWG_IN_UPGRADE') or !PHPWG_IN_UPGRADE)
+  {
+    die ('Hacking attempt!');
+  }
+}
+
+$last_time = get_moment();
+
+// will the user have to edit include/config_local.inc.php for
+// prefix_thumbnail configuration parameter
+$query = '
+SELECT value
+  FROM '.CONFIG_TABLE.'
+  WHERE param = \'prefix_thumbnail\'
+;';
+list($prefix_thumbnail) = mysql_fetch_array(pwg_query($query));
+
+// delete obsolete configuration
+$query = '
+DELETE
+  FROM '.PREFIX_TABLE.'config
+  WHERE param IN (
+   \'prefix_thumbnail\',
+   \'mail_webmaster\',
+   \'upload_maxfilesize\',
+   \'upload_maxwidth\',
+   \'upload_maxheight\',
+   \'upload_maxwidth_thumbnail\',
+   \'upload_maxheight_thumbnail\',
+   \'mail_notification\',
+   \'use_iptc\',
+   \'use_exif\',
+   \'show_iptc\',
+   \'show_exif\',
+   \'authorize_remembering\'
+   )
+;';
+mysql_query($query);
+
+$queries = array(
+
+  "
+ALTER TABLE phpwebgallery_categories
+  CHANGE COLUMN date_last date_last datetime default NULL
+;",
+
+  "
+ALTER TABLE phpwebgallery_comments
+  ADD COLUMN validation_date datetime default NULL
+;",
+
+  "
+UPDATE phpwebgallery_comments
+  SET validation_date = date
+",
+
+  "
+ALTER TABLE phpwebgallery_comments
+  ADD INDEX comments_i1 (image_id)
+;",
+
+  "
+ALTER TABLE phpwebgallery_comments
+  ADD INDEX comments_i2 (validation_date)
+;",
+
+  "
+ALTER TABLE phpwebgallery_favorites
+  CHANGE COLUMN user_id user_id smallint(5) NOT NULL default '0'
+;",
+
+  "
+ALTER TABLE phpwebgallery_images
+  CHANGE COLUMN date_available
+    date_available datetime NOT NULL default '0000-00-00 00:00:00'
+;",
+
+  "
+ALTER TABLE phpwebgallery_rate
+  CHANGE COLUMN user_id user_id smallint(5) NOT NULL default '0'
+;",
+
+  "
+ALTER TABLE phpwebgallery_sessions
+  CHANGE COLUMN user_id user_id smallint(5) NOT NULL default '0'
+;",
+
+  "
+ALTER TABLE phpwebgallery_user_access
+  CHANGE COLUMN user_id user_id smallint(5) NOT NULL default '0'
+;",
+
+  "
+DROP TABLE phpwebgallery_user_forbidden
+;",
+
+  "
+ALTER TABLE phpwebgallery_user_group
+ CHANGE COLUMN user_id user_id smallint(5) NOT NULL default '0'
+;",
+
+  "
+ALTER TABLE phpwebgallery_users
+  CHANGE COLUMN id id smallint(5) NOT NULL auto_increment
+;",
+
+  "
+CREATE TABLE phpwebgallery_caddie (
+  user_id smallint(5) NOT NULL default '0',
+  element_id mediumint(8) NOT NULL default '0',
+  PRIMARY KEY  (user_id,element_id)
+) TYPE=MyISAM
+;",
+
+  "
+CREATE TABLE phpwebgallery_user_cache (
+  user_id smallint(5) NOT NULL default '0',
+  need_update enum('true','false') NOT NULL default 'true',
+  forbidden_categories text,
+  PRIMARY KEY  (user_id)
+) TYPE=MyISAM
+;",
+
+  "
+CREATE TABLE phpwebgallery_user_feed (
+  id varchar(50) binary NOT NULL default '',
+  user_id smallint(5) NOT NULL default '0',
+  last_check datetime default NULL,
+  PRIMARY KEY  (id)
+) TYPE=MyISAM
+;",
+
+  "
+CREATE TABLE phpwebgallery_user_infos (
+  user_id smallint(5) NOT NULL default '0',
+  nb_image_line tinyint(1) unsigned NOT NULL default '5',
+  nb_line_page tinyint(3) unsigned NOT NULL default '3',
+  status enum('admin','guest') NOT NULL default 'guest',
+  language varchar(50) NOT NULL default 'english',
+  maxwidth smallint(6) default NULL,
+  maxheight smallint(6) default NULL,
+  expand enum('true','false') NOT NULL default 'false',
+  show_nb_comments enum('true','false') NOT NULL default 'false',
+  recent_period tinyint(3) unsigned NOT NULL default '7',
+  template varchar(255) NOT NULL default 'yoga',
+  registration_date datetime NOT NULL default '0000-00-00 00:00:00',
+  UNIQUE KEY user_infos_ui1 (user_id)
+) TYPE=MyISAM
+;"
+  );
+
+foreach ($queries as $query)
+{
+  $query = str_replace('phpwebgallery_', PREFIX_TABLE, $query);
+  pwg_query($query);
+}
+
+// user datas migration from phpwebgallery_users to phpwebgallery_user_infos
+$query = '
+SELECT *
+  FROM '.USERS_TABLE.'
+;';
+
+$datas = array();
+list($dbnow) = mysql_fetch_row(pwg_query('SELECT NOW();'));
+
+$result = pwg_query($query);
+while ($row = mysql_fetch_array($result))
+{
+  $row['user_id'] = $row['id'];
+  $row['registration_date'] = $dbnow;
+  array_push($datas, $row);
+}
+
+include_once(PHPWG_ROOT_PATH.'admin/include/functions.php');
+mass_inserts(
+  USER_INFOS_TABLE,
+  array(
+    'user_id',
+    'nb_image_line',
+    'nb_line_page',
+    'status',
+    'language',
+    'maxwidth',
+    'maxheight',
+    'expand',
+    'show_nb_comments',
+    'recent_period',
+    'template',
+    'registration_date'
+    ),
+  $datas
+  );
+
+$queries = array(
+
+  "
+UPDATE ".USER_INFOS_TABLE."
+  SET template = 'yoga'
+;",
+
+  "
+UPDATE ".USER_INFOS_TABLE."
+  SET language = 'en_UK.iso-8859-1'
+  WHERE language NOT IN ('en_UK.iso-8859-1', 'fr_FR.iso-8859-1')
+;",
+
+  "
+UPDATE ".CONFIG_TABLE."
+  SET value = 'en_UK.iso-8859-1'
+  WHERE param = 'default_language'
+    AND value NOT IN ('en_UK.iso-8859-1', 'fr_FR.iso-8859-1')
+;",
+
+  "
+UPDATE ".CONFIG_TABLE."
+  SET value = 'yoga'
+  WHERE param = 'default_template'
+;",
+
+  "
+INSERT INTO ".CONFIG_TABLE."
+  (param,value,comment)
+  VALUES
+  (
+    'gallery_title',
+    'PhpWebGallery demonstration site',
+    'Title at top of each page and for RSS feed'
+  )
+;",
+
+  "
+INSERT INTO ".CONFIG_TABLE."
+  (param,value,comment)
+  VALUES
+  (
+    'gallery_description',
+    'My photos web site',
+    'Short description displayed with gallery title'
+  )
+;"
+
+  );
+
+foreach ($queries as $query)
+{
+  $query = str_replace('phpwebgallery_', PREFIX_TABLE, $query);
+  pwg_query($query);
+}
+
+if ($prefix_thumbnail != 'TN-')
+{
+  array_push(
+    $page['infos'],
+    'the thumbnail prefix configuration parameter was moved to configuration
+file, copy config_local.inc.php from "tools" directory to "include" directory
+and edit $conf[\'prefix_thumbnail\'] = '.$prefix_thumbnail
+    );
+}
+
+// now we upgrade from 1.5.0 to 1.6.0
+include_once(PHPWG_ROOT_PATH.'install/upgrade_1.5.0.php');
+?>
\ No newline at end of file
diff --git a/install/upgrade_1.5.0.php b/install/upgrade_1.5.0.php
new file mode 100644
index 000000000..2f69ffe10
--- /dev/null
+++ b/install/upgrade_1.5.0.php
@@ -0,0 +1,473 @@
+<?php
+// +-----------------------------------------------------------------------+
+// | PhpWebGallery - a PHP based picture gallery                           |
+// | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
+// | Copyright (C) 2003-2005 PhpWebGallery Team - http://phpwebgallery.net |
+// +-----------------------------------------------------------------------+
+// | branch        : BSF (Best So Far)
+// | file          : $RCSfile$
+// | last update   : $Date: 2005-10-23 23:02:21 +0200 (dim, 23 oct 2005) $
+// | last modifier : $Author: plg $
+// | revision      : $Revision: 911 $
+// +-----------------------------------------------------------------------+
+// | 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                                          |
+// |                                                                       |
+// | 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.                                                                  |
+// +-----------------------------------------------------------------------+
+
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die ('This page cannot be loaded directly, load upgrade.php');
+}
+else
+{
+  if (!defined('PHPWG_IN_UPGRADE') or !PHPWG_IN_UPGRADE)
+  {
+    die ('Hacking attempt!');
+  }
+}
+
+/**
+ * replace old style #images.keywords by #tags. Requires a big data
+ * migration.
+ *
+ * @return void
+ */
+function tag_replace_keywords()
+{
+  // code taken from upgrades 19 and 22
+  
+  $query = '
+CREATE TABLE '.PREFIX_TABLE.'tags (
+  id smallint(5) UNSIGNED NOT NULL auto_increment,
+  name varchar(255) BINARY NOT NULL,
+  url_name varchar(255) BINARY NOT NULL,
+  PRIMARY KEY (id)
+)
+;';
+  pwg_query($query);
+  
+  $query = '
+CREATE TABLE '.PREFIX_TABLE.'image_tag (
+  image_id mediumint(8) UNSIGNED NOT NULL,
+  tag_id smallint(5) UNSIGNED NOT NULL,
+  PRIMARY KEY (image_id,tag_id)
+)
+;';
+  pwg_query($query);
+  
+  //
+  // Move keywords to tags
+  //
+
+  // each tag label is associated to a numeric identifier
+  $tag_id = array();
+  // to each tag id (key) a list of image ids (value) is associated
+  $tag_images = array();
+
+  $current_id = 1;
+
+  $query = '
+SELECT id, keywords
+  FROM '.PREFIX_TABLE.'images
+  WHERE keywords IS NOT NULL
+;';
+  $result = pwg_query($query);
+  while ($row = mysql_fetch_array($result))
+  {
+    foreach(preg_split('/[,]+/', $row['keywords']) as $keyword)
+    {
+      if (!isset($tag_id[$keyword]))
+      {
+        $tag_id[$keyword] = $current_id++;
+      }
+
+      if (!isset($tag_images[ $tag_id[$keyword] ]))
+      {
+        $tag_images[ $tag_id[$keyword] ] = array();
+      }
+
+      array_push(
+        $tag_images[ $tag_id[$keyword] ],
+        $row['id']
+        );
+    }
+  }
+
+  $datas = array();
+  foreach ($tag_id as $tag_name => $tag_id)
+  {
+    array_push(
+      $datas,
+      array(
+        'id'       => $tag_id,
+        'name'     => $tag_name,
+        'url_name' => str2url($tag_name),
+        )
+      );
+  }
+  
+  if (!empty($datas))
+  {
+    mass_inserts(
+      PREFIX_TABLE.'tags',
+      array_keys($datas[0]),
+      $datas
+      );
+  }
+
+  $datas = array();
+  foreach ($tag_images as $tag_id => $images)
+  {
+    foreach (array_unique($images) as $image_id)
+    {
+      array_push(
+        $datas,
+        array(
+          'tag_id'   => $tag_id,
+          'image_id' => $image_id,
+          )
+        );
+    }
+  }
+  
+  if (!empty($datas))
+  {
+    mass_inserts(
+      PREFIX_TABLE.'image_tag',
+      array_keys($datas[0]),
+      $datas
+      );
+  }
+
+  //
+  // Delete images.keywords
+  //
+  $query = '
+ALTER TABLE '.PREFIX_TABLE.'images DROP COLUMN keywords
+;';
+  pwg_query($query);
+
+  //
+  // Add useful indexes
+  //
+  $query = '
+ALTER TABLE '.PREFIX_TABLE.'tags
+  ADD INDEX tags_i1(url_name)
+;';
+  pwg_query($query);
+
+
+  $query = '
+ALTER TABLE '.PREFIX_TABLE.'image_tag
+  ADD INDEX image_tag_i1(tag_id)
+;';
+  pwg_query($query);
+
+  // print_time('tags have replaced keywords');
+}
+
+tag_replace_keywords();
+
+$queries = array(
+  "
+CREATE TABLE ".PREFIX_TABLE."search (
+  id int UNSIGNED NOT NULL AUTO_INCREMENT,
+  last_seen date DEFAULT NULL,
+  rules text,
+  PRIMARY KEY  (id)
+);",
+
+  "
+CREATE TABLE ".PREFIX_TABLE."user_mail_notification (
+  user_id smallint(5) NOT NULL default '0',
+  check_key varchar(16) binary NOT NULL default '',
+  enabled enum('true','false') NOT NULL default 'false',
+  last_send datetime default NULL,
+  PRIMARY KEY  (user_id),
+  UNIQUE KEY uidx_check_key (check_key)
+);",
+
+  "
+CREATE TABLE ".PREFIX_TABLE."upgrade (
+  id varchar(20) NOT NULL default '',
+  applied datetime NOT NULL default '0000-00-00 00:00:00',
+  description varchar(255) default NULL,
+  PRIMARY KEY  (`id`)
+);",
+
+  "
+ALTER TABLE ".PREFIX_TABLE."config
+  MODIFY COLUMN value TEXT
+;",
+
+  "
+ALTER TABLE ".PREFIX_TABLE."images
+  ADD COLUMN has_high enum('true') default NULL
+;",
+
+  "
+ALTER TABLE ".PREFIX_TABLE."rate
+  ADD COLUMN anonymous_id varchar(45) NOT NULL default ''
+;",
+  "
+ALTER TABLE ".PREFIX_TABLE."rate
+  ADD COLUMN date date NOT NULL default '0000-00-00'
+;",
+  "
+ALTER TABLE ".PREFIX_TABLE."rate
+  DROP PRIMARY KEY
+;",
+  "
+ALTER TABLE ".PREFIX_TABLE."rate
+  ADD PRIMARY KEY (element_id,user_id,anonymous_id)
+;",
+  "
+UPDATE ".PREFIX_TABLE."rate
+  SET date = CURDATE()
+;",
+  
+  "
+DELETE
+  FROM ".PREFIX_TABLE."sessions
+;",
+  "
+ALTER TABLE ".PREFIX_TABLE."sessions
+  DROP COLUMN user_id
+;",
+  "
+ALTER TABLE ".PREFIX_TABLE."sessions
+  ADD COLUMN data text NOT NULL
+;",
+  
+  "
+ALTER TABLE ".PREFIX_TABLE."user_cache
+  ADD COLUMN nb_total_images mediumint(8) unsigned default NULL
+;",
+  
+  "
+ALTER TABLE ".PREFIX_TABLE."user_infos
+  CHANGE COLUMN status
+     status enum('webmaster','admin','normal','generic','guest')
+     NOT NULL default 'guest'
+;",
+  "
+UPDATE ".PREFIX_TABLE."user_infos
+  SET status = 'normal'
+  WHERE status = 'guest'
+;",
+  "
+UPDATE ".PREFIX_TABLE."user_infos
+  SET status = 'guest'
+  WHERE user_id = ".$conf['guest_id']."
+;",
+  "
+UPDATE ".PREFIX_TABLE."user_infos
+  SET status = 'webmaster'
+  WHERE user_id = ".$conf['webmaster_id']."
+;",
+
+  "
+ALTER TABLE ".PREFIX_TABLE."user_infos
+   CHANGE COLUMN template template varchar(255) NOT NULL default 'yoga/clear'
+;",
+
+  "
+UPDATE ".PREFIX_TABLE."user_infos
+  SET template = 'yoga/dark'
+  WHERE template = 'yoga-dark'
+;",
+  "
+UPDATE ".PREFIX_TABLE."user_infos
+  SET template = 'yoga/clear'
+  WHERE template != 'yoga/dark'
+;",
+  "
+ALTER TABLE ".PREFIX_TABLE."user_infos
+  ADD COLUMN adviser enum('true','false') NOT NULL default 'false'
+;",
+  "
+ALTER TABLE ".PREFIX_TABLE."user_infos
+  ADD COLUMN enabled_high enum('true','false') NOT NULL default 'true'
+;",
+  "
+ALTER TABLE ".PREFIX_TABLE."categories
+  CHANGE COLUMN rank rank SMALLINT(5) UNSIGNED DEFAULT NULL
+;",
+  // configuration table
+  "
+UPDATE ".PREFIX_TABLE."config
+  SET value = 'yoga/clear'
+  WHERE param = 'default_template'
+;"
+  );
+
+foreach ($queries as $query)
+{
+  pwg_query($query);
+}
+
+//
+// Move rate, rate_anonymous and gallery_url from config file to database
+//
+$params = array(
+  'gallery_url' => array(
+    'http://demo.phpwebgallery.net',
+    'URL given in RSS feed'
+    ),
+  'rate' => array(
+    'true',
+    'Rating pictures feature is enabled'
+    ),
+  'rate_anonymous' => array(
+    'true',
+    'Rating pictures feature is also enabled for visitors'
+    )
+  );
+// Get real values from config file
+$conf_save = $conf;
+unset($conf);
+@include(PHPWG_ROOT_PATH. 'include/config_local.inc.php');
+if ( isset($conf['gallery_url']) )
+{
+  $params['gallery_url'][0] = $conf['gallery_url'];
+}
+if ( isset($conf['rate']) and is_bool($conf['rate']) )
+{
+  $params['rate'][0] = $conf['rate'] ? 'true' : 'false';
+}
+if ( isset($conf['rate_anonymous']) and is_bool($conf['rate_anonymous']) )
+{
+  $params['rate_anonymous'][0] = $conf['rate_anonymous'] ? 'true' : 'false';
+}
+$conf = $conf_save;
+
+// Do I already have them in DB ?
+$query = 'SELECT param FROM '.PREFIX_TABLE.'config';
+$result = pwg_query($query);
+while ($row = mysql_fetch_array($result))
+{
+  unset( $params[ $row['param'] ] );
+}
+
+// Perform the insert query
+foreach ($params as $param_key => $param_values)
+{
+  $query = '
+INSERT INTO '.PREFIX_TABLE.'config
+  (param,value,comment)
+  VALUES
+ ('."'$param_key','$param_values[0]','$param_values[1]')
+;";
+  pwg_query($query);
+}
+
+$query = "
+ALTER TABLE ".PREFIX_TABLE."config MODIFY COLUMN `value` TEXT;";
+pwg_query($query);
+
+
+//
+// replace gallery_description by page_banner
+//
+$query = '
+SELECT value
+  FROM '.PREFIX_TABLE.'config
+  WHERE param=\'gallery_title\'
+;';
+list($t) = array_from_query($query, 'value');
+
+$query = '
+SELECT value
+  FROM '.PREFIX_TABLE.'config
+  WHERE param=\'gallery_description\'
+;';
+list($d) = array_from_query($query, 'value');
+
+$page_banner='<h1>'.$t.'</h1><p>'.$d.'</p>';
+$page_banner=addslashes($page_banner);
+$query = '
+INSERT INTO '.PREFIX_TABLE.'config
+  (param,value,comment)
+  VALUES
+  (
+    \'page_banner\',
+    \''.$page_banner.'\',
+    \'html displayed on the top each page of your gallery\'
+  )
+;';
+pwg_query($query);
+
+$query = '
+DELETE FROM '.PREFIX_TABLE.'config
+  WHERE param=\'gallery_description\'
+;';
+pwg_query($query);
+
+//
+// configuration for notification by mail
+//
+$query = "
+INSERT INTO ".CONFIG_TABLE."
+  (param,value,comment)
+  VALUES
+  (
+    'nbm_send_mail_as',
+    '',
+    'Send mail as param value for notification by mail'
+  ),
+  (
+    'nbm_send_detailed_content',
+    'true',
+    'Send detailed content for notification by mail'
+  ),
+  (
+    'nbm_complementary_mail_content',
+    '',
+    'Complementary mail content for notification by mail'
+  )
+;";
+pwg_query($query);
+
+// depending on the way the 1.5.0 was installed (from scratch or by upgrade)
+// the database structure has small differences that should be corrected.
+
+$query = '
+ALTER TABLE '.PREFIX_TABLE.'users
+  CHANGE COLUMN password password varchar(32) default NULL
+;';
+pwg_query($query);
+
+$to_keep = array('id', 'username', 'password', 'mail_address');
+  
+$query = '
+DESC '.PREFIX_TABLE.'users
+;';
+
+$result = pwg_query($query);
+
+while ($row = mysql_fetch_array($result))
+{
+  if (!in_array($row['Field'], $to_keep))
+  {
+    $query = '
+ALTER TABLE '.PREFIX_TABLE.'users
+  DROP COLUMN '.$row['Field'].'
+;';
+    pwg_query($query);
+  }
+}
+
+// now we upgrade from 1.6.0 to 1.6.2
+include_once(PHPWG_ROOT_PATH.'install/upgrade_1.6.0.php');
+?>
diff --git a/install/upgrade_1.6.0.php b/install/upgrade_1.6.0.php
new file mode 100644
index 000000000..02cda6ce1
--- /dev/null
+++ b/install/upgrade_1.6.0.php
@@ -0,0 +1,58 @@
+<?php
+// +-----------------------------------------------------------------------+
+// | PhpWebGallery - a PHP based picture gallery                           |
+// | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
+// | Copyright (C) 2003-2005 PhpWebGallery Team - http://phpwebgallery.net |
+// +-----------------------------------------------------------------------+
+// | branch        : BSF (Best So Far)
+// | file          : $RCSfile$
+// | last update   : $Date: 2005-10-23 23:02:21 +0200 (dim, 23 oct 2005) $
+// | last modifier : $Author: plg $
+// | revision      : $Revision: 911 $
+// +-----------------------------------------------------------------------+
+// | 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                                          |
+// |                                                                       |
+// | 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.                                                                  |
+// +-----------------------------------------------------------------------+
+
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die ('This page cannot be loaded directly, load upgrade.php');
+}
+else
+{
+  if (!defined('PHPWG_IN_UPGRADE') or !PHPWG_IN_UPGRADE)
+  {
+    die ('Hacking attempt!');
+  }
+}
+
+$queries = array(
+  "
+ALTER TABLE ".PREFIX_TABLE."user_infos
+  ADD auto_login_key varchar(64) NOT NULL
+;",
+  '
+ALTER TABLE '.PREFIX_TABLE.'users
+  CHANGE username username VARCHAR(100) binary NOT NULL
+;',
+  );
+
+foreach ($queries as $query)
+{
+  pwg_query($query);
+}
+
+// now we upgrade from 1.6.2
+include_once(PHPWG_ROOT_PATH.'install/upgrade_1.6.2.php');
+?>
diff --git a/install/upgrade_1.6.2.php b/install/upgrade_1.6.2.php
new file mode 100644
index 000000000..44c479cfa
--- /dev/null
+++ b/install/upgrade_1.6.2.php
@@ -0,0 +1,350 @@
+<?php
+// +-----------------------------------------------------------------------+
+// | PhpWebGallery - a PHP based picture gallery                           |
+// | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
+// | Copyright (C) 2003-2005 PhpWebGallery Team - http://phpwebgallery.net |
+// +-----------------------------------------------------------------------+
+// | branch        : BSF (Best So Far)
+// | file          : $RCSfile$
+// | last update   : $Date: 2005-10-23 23:02:21 +0200 (dim, 23 oct 2005) $
+// | last modifier : $Author: plg $
+// | revision      : $Revision: 911 $
+// +-----------------------------------------------------------------------+
+// | 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                                          |
+// |                                                                       |
+// | 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.                                                                  |
+// +-----------------------------------------------------------------------+
+
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die ('This page cannot be loaded directly, load upgrade.php');
+}
+else
+{
+  if (!defined('PHPWG_IN_UPGRADE') or !PHPWG_IN_UPGRADE)
+  {
+    die ('Hacking attempt!');
+  }
+}
+
+$queries = array(
+"
+ALTER TABLE `".PREFIX_TABLE."categories`
+  ADD COLUMN `permalink` varchar(64) default NULL
+;",
+
+"
+ALTER TABLE `".PREFIX_TABLE."categories`
+  ADD COLUMN `image_order` varchar(128) default NULL
+;",
+
+"
+ALTER TABLE `".PREFIX_TABLE."categories`
+  ADD UNIQUE `categories_i3` (`permalink`)
+;",
+
+"
+ALTER TABLE `".PREFIX_TABLE."groups`
+  ADD COLUMN `is_default` enum('true','false') NOT NULL default 'false'
+;",
+
+"
+RENAME TABLE `".PREFIX_TABLE."history` TO `".PREFIX_TABLE."history_backup`
+;",
+
+"
+CREATE TABLE `".PREFIX_TABLE."history` (
+  `id` int(10) unsigned NOT NULL auto_increment,
+  `date` date NOT NULL default '0000-00-00',
+  `time` time NOT NULL default '00:00:00',
+  `year` smallint(4) NOT NULL default '0',
+  `month` tinyint(2) NOT NULL default '0',
+  `day` tinyint(2) NOT NULL default '0',
+  `hour` tinyint(2) NOT NULL default '0',
+  `user_id` smallint(5) NOT NULL default '0',
+  `IP` varchar(15) NOT NULL default '',
+  `section` enum('categories','tags','search','list','favorites','most_visited','best_rated','recent_pics','recent_cats') default NULL,
+  `category_id` smallint(5) default NULL,
+  `tag_ids` varchar(50) default NULL,
+  `image_id` mediumint(8) default NULL,
+  `summarized` enum('true','false') default 'false',
+  `image_type` enum('picture','high','other') default NULL,
+  PRIMARY KEY  (`id`),
+  KEY `history_i1` (`summarized`)
+) TYPE=MyISAM
+;",
+
+"
+ALTER TABLE `".PREFIX_TABLE."image_category`
+  DROP INDEX `image_category_i1`
+;",
+
+"
+ALTER TABLE `".PREFIX_TABLE."image_category`
+  ADD INDEX `image_category_i1` (`category_id`)
+;",
+
+"
+ALTER TABLE `".PREFIX_TABLE."image_category`
+  DROP INDEX `image_category_i2`
+;",
+
+"
+ALTER TABLE `".PREFIX_TABLE."images`
+  ADD COLUMN `high_filesize` mediumint(9) unsigned default NULL
+;",
+
+"
+ALTER TABLE `".PREFIX_TABLE."user_infos`
+  CHANGE COLUMN `language`
+    `language` varchar(50) NOT NULL default 'en_UK.iso-8859-1'
+;",
+
+"
+ALTER TABLE `".PREFIX_TABLE."user_infos`
+  DROP COLUMN `auto_login_key`
+;",
+
+"
+ALTER TABLE `".PREFIX_TABLE."user_infos`
+  ADD COLUMN `show_nb_hits` enum('true','false') NOT NULL default 'false'
+;",
+
+"
+ALTER TABLE `".PREFIX_TABLE."user_mail_notification`
+  DROP INDEX `uidx_check_key`
+;",
+
+"
+ALTER TABLE `".PREFIX_TABLE."user_mail_notification`
+  ADD UNIQUE `user_mail_notification_ui1` (`check_key`)
+;",
+
+"
+CREATE TABLE `".PREFIX_TABLE."history_summary` (
+  `id` varchar(13) NOT NULL default '',
+  `year` smallint(4) NOT NULL default '0',
+  `month` tinyint(2) default NULL,
+  `day` tinyint(2) default NULL,
+  `hour` tinyint(2) default NULL,
+  `nb_pages` int(11) default NULL,
+  PRIMARY KEY  (`id`)
+) TYPE=MyISAM
+;",
+
+"
+CREATE TABLE `".PREFIX_TABLE."old_permalinks` (
+  `cat_id` smallint(5) unsigned NOT NULL default '0',
+  `permalink` varchar(64) NOT NULL default '',
+  `date_deleted` datetime NOT NULL default '0000-00-00 00:00:00',
+  `last_hit` datetime default NULL,
+  `hit` int(10) unsigned NOT NULL default '0',
+  PRIMARY KEY  (`permalink`)
+) TYPE=MyISAM
+;",
+
+"
+CREATE TABLE `".PREFIX_TABLE."plugins` (
+  `id` varchar(64) binary NOT NULL default '',
+  `state` enum('inactive','active') NOT NULL default 'inactive',
+  `version` varchar(64) NOT NULL default '0',
+  PRIMARY KEY  (`id`)
+) TYPE=MyISAM
+;",
+
+"
+CREATE TABLE `".PREFIX_TABLE."user_cache_categories` (
+  `user_id` smallint(5) NOT NULL default '0',
+  `cat_id` smallint(5) unsigned NOT NULL default '0',
+  `max_date_last` datetime default NULL,
+  `count_images` mediumint(8) unsigned default '0',
+  `count_categories` mediumint(8) unsigned default '0',
+  PRIMARY KEY  (`user_id`,`cat_id`)
+) TYPE=MyISAM
+;",
+
+"
+CREATE TABLE `".PREFIX_TABLE."ws_access` (
+  `id` smallint(5) unsigned NOT NULL auto_increment,
+  `name` varchar(32) NOT NULL default '',
+  `access` varchar(255) default NULL,
+  `start` datetime default NULL,
+  `end` datetime default NULL,
+  `request` varchar(255) default NULL,
+  `limit` smallint(5) unsigned default NULL,
+  `comment` varchar(255) default NULL,
+  PRIMARY KEY  (`id`),
+  UNIQUE KEY `ws_access_ui1` (`name`)
+) TYPE=MyISAM COMMENT='Access for Web Services'
+;",
+
+"
+INSERT INTO ".PREFIX_TABLE."config
+  (param,value,comment)
+  VALUES
+  ('show_nb_hits', 'false', 'Show hits count under thumbnails')
+;",
+
+"
+INSERT INTO ".PREFIX_TABLE."config
+  (param,value,comment)
+  VALUES
+  ('history_admin','false','keep a history of administrator visits on your website')
+;",
+
+"
+INSERT INTO ".PREFIX_TABLE."config
+  (param,value,comment)
+  VALUES
+  ('history_guest','true','keep a history of guest visits on your website')
+;",
+
+"
+INSERT INTO ".PREFIX_TABLE."config
+  (param,value,comment)
+  VALUES
+  ('allow_user_registration','true','allow visitors to register?')
+;",
+
+"
+INSERT INTO ".PREFIX_TABLE."config
+  (param,value,comment)
+  VALUES
+  ('secret_key', MD5(RAND()), 'a secret key specific to the gallery for internal use')
+;",
+
+"
+INSERT INTO ".PREFIX_TABLE."config
+  (param,value,comment)
+  VALUES
+  ('nbm_send_html_mail','true','Send mail on HTML format for notification by mail')
+;",
+
+"
+INSERT INTO ".PREFIX_TABLE."config
+  (param,value,comment)
+  VALUES
+  ('nbm_send_recent_post_dates','true','Send recent post by dates for notification by mail')
+;",
+
+"
+INSERT INTO ".PREFIX_TABLE."config
+  (param,value,comment)
+  VALUES
+  ('email_admin_on_new_user','false','Send an email to theadministrators when a user registers')
+;",
+
+"
+INSERT INTO ".PREFIX_TABLE."config
+  (param,value,comment)
+  VALUES
+  ('email_admin_on_comment','false','Send an email to the administrators when a valid comment is entered')
+;",
+
+"
+INSERT INTO ".PREFIX_TABLE."config
+  (param,value,comment)
+  VALUES
+  ('email_admin_on_comment_validation','false','Send an email to the administrators when a comment requires validation')
+;",
+
+"
+INSERT INTO ".PREFIX_TABLE."config
+  (param,value,comment)
+  VALUES
+  ('email_admin_on_picture_uploaded','false','Send an email to the administrators when a picture is uploaded')
+;",
+
+"
+UPDATE ".PREFIX_TABLE."user_cache
+  SET need_update = 'true'
+;",
+
+);
+
+foreach ($queries as $query)
+{
+  pwg_query($query);
+}
+
+$replacements = array(
+  array('&#039;', '\''),
+  array('&quot;', '"'),
+  array('&lt;',   '<'),
+  array('&gt;',   '>'),
+  array('&amp;',  '&') // <- this must be the last one
+  );
+
+foreach ($replacements as $replacement)
+{
+    $query = '
+UPDATE '.PREFIX_TABLE.'comments
+  SET content = REPLACE(content, "'.
+  addslashes($replacement[0]).
+  '", "'.
+  addslashes($replacement[1]).
+  '")
+;';
+    pwg_query($query);
+}
+
+load_conf_from_db();
+
+$query = "
+UPDATE ".USER_INFOS_TABLE."
+SET
+  template = '".$conf['default_template']."',
+  nb_image_line = ".$conf['nb_image_line'].",
+  nb_line_page = ".$conf['nb_line_page'].",
+  language = '".$conf['default_language']."',
+  maxwidth = ".
+  (empty($conf['default_maxwidth']) ? "NULL" : $conf['default_maxwidth']).
+  ",
+  maxheight = ".
+  (empty($conf['default_maxheight']) ? "NULL" : $conf['default_maxheight']).
+  ",
+  recent_period = ".$conf['recent_period'].",
+  expand = '".boolean_to_string($conf['auto_expand'])."',
+  show_nb_comments = '".boolean_to_string($conf['show_nb_comments'])."',
+  show_nb_hits = '".boolean_to_string($conf['show_nb_hits'])."',
+  enabled_high = '".boolean_to_string(
+    (isset($conf['newuser_default_enabled_high']) ?
+      $conf['newuser_default_enabled_high'] : true)
+    ).
+  "'
+WHERE
+  user_id = ".$conf['default_user_id'].";";
+pwg_query($query);
+
+$query = "
+DELETE FROM ".CONFIG_TABLE."
+WHERE
+  param IN
+(
+  'default_template',
+  'nb_image_line',
+  'nb_line_page',
+  'default_language',
+  'default_maxwidth',
+  'default_maxheight',
+  'recent_period',
+  'auto_expand',
+  'show_nb_comments',
+  'show_nb_hits'
+)
+;";
+pwg_query($query);
+
+// now we upgrade from 1.7.0
+// include_once(PHPWG_ROOT_PATH.'install/upgrade_1.7.0.php');
+?>
diff --git a/template/yoga/upgrade.tpl b/template/yoga/upgrade.tpl
new file mode 100644
index 000000000..2d2b06505
--- /dev/null
+++ b/template/yoga/upgrade.tpl
@@ -0,0 +1,44 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+
+  <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"  />
+    <title>PhpWebGallery : Upgrade to {RELEASE}</title>
+  </head>
+
+  <body>
+    <!-- BEGIN introduction -->
+    <h1>Welcome to PhpWebGallery upgrade page.</h1>
+
+    <p>This page proposes to upgrade your database corresponding to your old
+version of PhpWebGallery to the current version. The upgrade assistant
+thinks you are currently running a
+<strong>release {introduction.CURRENT_RELEASE}</strong> (or equivalent).</p>
+
+    <p><a href="{introduction.RUN_UPGRADE_URL}">Upgrade from release
+{introduction.CURRENT_RELEASE} to {RELEASE}</a></p>
+    <!-- END introduction -->
+
+    <!-- BEGIN upgrade -->
+    <h1>Upgrade from version {upgrade.VERSION} to {RELEASE}</h1>
+
+    <p>Statistics</p>
+    <ul>
+      <li>total upgrade time : {upgrade.TOTAL_TIME}</li>
+      <li>total SQL time : {upgrade.SQL_TIME}</li>
+      <li>SQL queries : {upgrade.NB_QUERIES}</li>
+    </ul>
+
+    <!-- BEGIN infos -->
+    <p>Upgrade informations</p>
+
+    <ul>
+      <!-- BEGIN info -->
+      <li>{upgrade.infos.info.CONTENT}</li>
+      <!-- END info -->
+    </ul>
+    <!-- END infos -->
+    <!-- END upgrade -->
+  </body>
+
+</html>
diff --git a/upgrade.php b/upgrade.php
new file mode 100644
index 000000000..b2ab1cded
--- /dev/null
+++ b/upgrade.php
@@ -0,0 +1,316 @@
+<?php
+// +-----------------------------------------------------------------------+
+// | PhpWebGallery - a PHP based picture gallery                           |
+// | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
+// | Copyright (C) 2003-2006 PhpWebGallery Team - http://phpwebgallery.net |
+// +-----------------------------------------------------------------------+
+// | branch        : BSF (Best So Far)
+// | file          : $RCSfile$
+// | last update   : $Date: 2006-11-09 23:13:33 +0100 (jeu, 09 nov 2006) $
+// | last modifier : $Author: plg $
+// | revision      : $Revision: 1599 $
+// +-----------------------------------------------------------------------+
+// | 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                                          |
+// |                                                                       |
+// | 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.                                                                  |
+// +-----------------------------------------------------------------------+
+
+define('PHPWG_ROOT_PATH', './');
+
+include_once(PHPWG_ROOT_PATH.'include/functions.inc.php');
+include_once(PHPWG_ROOT_PATH.'admin/include/functions.php');
+include_once(PHPWG_ROOT_PATH.'admin/include/functions_upgrade.php');
+include(PHPWG_ROOT_PATH.'include/template.php');
+
+include(PHPWG_ROOT_PATH.'include/mysql.inc.php');
+include(PHPWG_ROOT_PATH . 'include/config_default.inc.php');
+@include(PHPWG_ROOT_PATH. 'include/config_local.inc.php');
+
+check_upgrade();
+
+// concerning upgrade, we use the default users table
+$conf['users_table'] = $prefixeTable.'users';
+
+include_once(PHPWG_ROOT_PATH.'include/constants.php');
+define('PREFIX_TABLE', $prefixeTable);
+
+// Database connection
+mysql_connect( $cfgHote, $cfgUser, $cfgPassword )
+or die ( "Could not connect to database server" );
+mysql_select_db( $cfgBase )
+or die ( "Could not connect to database" );
+// +-----------------------------------------------------------------------+
+// |                            tricky output                              |
+// +-----------------------------------------------------------------------+
+echo '<!-- This is an HTML comment given in order to make IE outputs';
+echo ' the code.'."\n";
+echo ' Indeed, IE doesn\'t start to send output until a limit';
+echo ' of XXX bytes '."\n";
+echo str_repeat( ' ', 80 )."\n";
+echo str_repeat( ' ', 80 )."\n";
+echo str_repeat( ' ', 80 )."\n";
+echo '-->'."\n";
+flush();
+// +-----------------------------------------------------------------------+
+// |                              functions                                |
+// +-----------------------------------------------------------------------+
+
+/**
+ * list all tables in an array
+ *
+ * @return array
+ */
+function get_tables()
+{
+  $tables = array();
+  
+  $query = '
+SHOW TABLES
+;';
+  $result = mysql_query($query);
+
+  while ($row = mysql_fetch_row($result))
+  {
+    if (preg_match('/^'.PREFIX_TABLE.'/', $row[0]))
+    {
+      array_push($tables, $row[0]);
+    }
+  }
+
+  return $tables;
+}
+
+/**
+ * list all columns of each given table
+ *
+ * @return array of array
+ */
+function get_columns_of($tables)
+{
+  $columns_of = array();
+
+  foreach ($tables as $table)
+  {
+    $query = '
+DESC '.$table.'
+;';
+    $result = mysql_query($query);
+
+    $columns_of[$table] = array();
+
+    while ($row = mysql_fetch_row($result))
+    {
+      array_push($columns_of[$table], $row[0]);
+    }
+  }
+
+  return $columns_of;
+}
+
+/**
+ */
+function print_time($message)
+{
+  global $last_time;
+  
+  $new_time = get_moment();
+  echo '<pre>['.get_elapsed_time($last_time, $new_time).']';
+  echo ' '.$message;
+  echo '</pre>';
+  flush();
+  $last_time = $new_time;
+}
+
+// +-----------------------------------------------------------------------+
+// |                             playing zone                              |
+// +-----------------------------------------------------------------------+
+
+// echo implode('<br>', get_tables());
+// echo '<pre>'; print_r(get_columns_of(get_tables())); echo '</pre>';
+
+// foreach (get_available_upgrade_ids() as $upgrade_id)
+// {
+//   echo $upgrade_id, '<br>';
+// }
+
+// +-----------------------------------------------------------------------+
+// |                        template initialization                        |
+// +-----------------------------------------------------------------------+
+
+$template = new Template(PHPWG_ROOT_PATH.'template/yoga');
+$template->set_filenames(array('upgrade'=>'upgrade.tpl'));
+$template->assign_vars(array('RELEASE'=>PHPWG_VERSION));
+
+// +-----------------------------------------------------------------------+
+// |                            upgrade choice                             |
+// +-----------------------------------------------------------------------+
+
+if (!isset($_GET['version']))
+{
+  // find the current release
+  $tables = get_tables();
+  $columns_of = get_columns_of($tables);
+
+  if (!in_array('param', $columns_of[PREFIX_TABLE.'config']))
+  {
+    // we're in branch 1.3, important upgrade, isn't it?
+    if (in_array(PREFIX_TABLE.'user_category', $tables))
+    {
+      $current_release = '1.3.1';
+    }
+    else
+    {
+      $current_release = '1.3.0';
+    }
+  }
+  else if (!in_array(PREFIX_TABLE.'user_cache', $tables))
+  {
+    $current_release = '1.4.0';
+  }
+  else if (!in_array(PREFIX_TABLE.'tags', $tables))
+  {
+    $current_release = '1.5.0';
+  }
+  else if (!in_array(PREFIX_TABLE.'history_summary', $tables))
+  {
+    if (!in_array('auto_login_key', $columns_of[PREFIX_TABLE.'user_infos']))
+    {
+      $current_release = '1.6.0';
+    }
+    else
+    {
+      $current_release = '1.6.2';
+    }
+  }
+  else
+  {
+    die('No upgrade required, the database structure is up to date');
+  }
+  
+  $template->assign_block_vars(
+    'introduction',
+    array(
+      'CURRENT_RELEASE' => $current_release,
+      'RUN_UPGRADE_URL' =>
+        PHPWG_ROOT_PATH.'upgrade.php?version='.$current_release,
+      )
+    );
+}
+
+// +-----------------------------------------------------------------------+
+// |                            upgrade launch                             |
+// +-----------------------------------------------------------------------+
+
+else
+{
+  $upgrade_file = PHPWG_ROOT_PATH.'install/upgrade_'.$_GET['version'].'.php';
+  if (is_file($upgrade_file))
+  {
+    $page['infos'] = array();
+    $page['upgrade_start'] = get_moment();
+    $conf['die_on_sql_error'] = false;
+    include($upgrade_file);
+
+    // Available upgrades must be ignored after a fresh installation. To
+    // make PWG avoid upgrading, we must tell it upgrades have already been
+    // made.
+    list($dbnow) = mysql_fetch_row(pwg_query('SELECT NOW();'));
+    define('CURRENT_DATE', $dbnow);
+    $datas = array();
+    foreach (get_available_upgrade_ids() as $upgrade_id)
+    {
+      array_push(
+        $datas,
+        array(
+          'id'          => $upgrade_id,
+          'applied'     => CURRENT_DATE,
+          'description' => 'upgrade included in migration',
+          )
+        );
+    }
+    mass_inserts(
+      UPGRADE_TABLE,
+      array_keys($datas[0]),
+      $datas
+      );
+    
+    $page['upgrade_end'] = get_moment();
+
+    $template->assign_block_vars(
+      'upgrade',
+      array(
+        'VERSION' => $_GET['version'],
+        'TOTAL_TIME' => get_elapsed_time(
+          $page['upgrade_start'],
+          $page['upgrade_end']
+          ),
+        'SQL_TIME' => number_format(
+          $page['queries_time'],
+          3,
+          '.',
+          ' '
+          ).' s',
+        'NB_QUERIES' => $page['count_queries']
+        )
+      );
+
+    array_push(
+      $page['infos'],
+      '[security] delete files "upgrade.php", "install.php" and "install"
+directory'
+      );
+
+    array_push(
+      $page['infos'],
+      'in include/mysql.inc.php, remove
+<pre style="background-color:lightgray">
+define(\'PHPWG_IN_UPGRADE\', true);
+</pre>'
+      );
+
+    array_push(
+      $page['infos'],
+      'Perform a maintenance check in [Administration>General>Maintenance]
+if you encounter any problem.'
+      );
+    
+    $template->assign_block_vars('upgrade.infos', array());
+    
+    foreach ($page['infos'] as $info)
+    {
+      $template->assign_block_vars(
+        'upgrade.infos.info',
+        array(
+          'CONTENT' => $info,
+          )
+        );
+    }
+
+    $query = '
+UPDATE '.USER_CACHE_TABLE.'
+  SET need_update = \'true\'
+;';
+    pwg_query($query);
+  }
+  else
+  {
+    die('Hacking attempt');
+  }
+}
+
+// +-----------------------------------------------------------------------+
+// |                          sending html code                            |
+// +-----------------------------------------------------------------------+
+
+$template->pparse('upgrade');
+?>