Index: branches/5.2.x/core/kernel/db/db_event_handler.php
===================================================================
diff -u -N -r14632 -r14646
--- branches/5.2.x/core/kernel/db/db_event_handler.php	(.../db_event_handler.php)	(revision 14632)
+++ branches/5.2.x/core/kernel/db/db_event_handler.php	(.../db_event_handler.php)	(revision 14646)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: db_event_handler.php 14632 2011-10-05 10:10:34Z alex $
+* @version	$Id: db_event_handler.php 14646 2011-10-06 15:38:50Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -203,6 +203,16 @@
 				$event->setEventParam('raise_warnings', 1);
 			}
 
+			if ( $event->Special == 'previous' || $event->Special == 'next' ) {
+				$object =& $this->Application->recallObject( $event->getEventParam('item') );
+				/* @var $object kDBItem */
+
+				$list_helper =& $this->Application->recallObject('ListHelper');
+				/* @var $list_helper ListHelper */
+
+				return $list_helper->getNavigationResource($object, $event->getEventParam('list'), $event->Special == 'next');
+			}
+
 			if (preg_match('/^auto-(.*)/', $event->Special, $regs) && $this->Application->prefixRegistred($regs[1])) {
 				// <inp2:lang.auto-phrase_Field name="DateFormat"/> - returns field DateFormat value from language (LanguageId is extracted from current phrase object)
 				$main_object =& $this->Application->recallObject($regs[1]);
@@ -1010,6 +1020,9 @@
 					$this->Application->ConfigValue($sorting_configs['DefaultSorting1Field']) => $this->Application->ConfigValue($sorting_configs['DefaultSorting1Dir']),
 					$this->Application->ConfigValue($sorting_configs['DefaultSorting2Field']) => $this->Application->ConfigValue($sorting_configs['DefaultSorting2Dir']),
 				);
+
+				// TODO: lowercase configuration variable values in db, instead of here
+				$list_sortings[$sorting_prefix]['Sorting'] = array_map('strtolower', $list_sortings[$sorting_prefix]['Sorting']);
 			}
 
 			// use default if not specified in session