Index: admin_templates/logs/change_logs/change_log_list.tpl
===================================================================
--- admin_templates/logs/change_logs/change_log_list.tpl	(revision 14610)
+++ admin_templates/logs/change_logs/change_log_list.tpl	(working copy)
@@ -47,6 +47,13 @@
 								);
 
 								a_toolbar.Render();
+								
+								function enable_log()
+								{
+									if (confirm('<inp2:m_Phrase name="la_msg_EnableTrackingDatabaseChangesToChangeLog" escape="1"/>')) {
+										submit_event('change-log', 'OnEnableLog');
+									}
+								}
 							</script>
 		  				</td>
 
@@ -88,6 +95,16 @@
 	<inp2:Field field="$field" first_chars="$first_chars" nl2br="$nl2br" grid="$grid" no_special="1" format="$format"/>
 </inp2:m_DefineElement>
 
+<inp2:m_ifnot check="m_GetConfig" var="UseChangeLog">
+	<inp2:m_DefineElement name="use_change_log_link">
+		"<a href="javascript:enable_log()" class="error"><inp2:m_Phrase name="la_config_UseChangeLog"/></a>"
+	</inp2:m_DefineElement>
+	<inp2:m_RenderElement design="form_message" pass_params="1">
+		<inp2:change-log_PrintUseChangeLogMessage render_as="use_change_log_link"/>
+	</inp2:m_RenderElement>
+</inp2:m_ifnot>	
+
+
 <inp2:m_RenderElement name="grid" PrefixSpecial="change-log" IdField="ChangeLogId" grid="Default" row_class_render_as="row_class"/>
 <script type="text/javascript">
 	Grids['change-log'].SetDependantToolbarButtons( new Array('edit', 'delete') );
Index: install/english.lang
===================================================================
--- install/english.lang	(revision 14610)
+++ install/english.lang	(working copy)
@@ -1498,6 +1498,8 @@
 			<PHRASE Label="lu_opt_AutoDetect" Module="Core" Type="1">QXV0by1EZXRlY3Q=</PHRASE>
 			<PHRASE Label="lu_opt_Cookies" Module="Core" Type="1">Q29va2llcw==</PHRASE>
 			<PHRASE Label="lu_opt_QueryString" Module="Core" Type="1">UXVlcnkgU3RyaW5nIChTSUQp</PHRASE>
+			<PHRASE Label="la_msg_ChangeLogIsCurrentlyDisabledTurnOnSettingToEnableIt" Module="Core" Type="1">Q2hhbmdlIGxvZyBpcyBjdXJyZW50bHkgZGlzYWJsZWQuIFR1cm4gb24gJXMgc2V0dGluZyB0byBlbmFibGUgaXQu</PHRASE>
+			<PHRASE Label="la_msg_TrackDatabaseChangesToChangeLog" Module="Core" Type="1">VHJhY2sgZGF0YWJhc2UgY2hhbmdlcyB0byBjaGFuZ2UgbG9n</PHRASE>
 		</PHRASES>
 		<EVENTS>
 			<EVENT MessageType="html" Event="CATEGORY.ADD" Type="0">U3ViamVjdDogTmV3IENhdGVnb3J5ICI8aW5wMjpjX0ZpZWxkIG5hbWU9Ik5hbWUiLz4iIC0gQWRkZWQKCllvdXIgc3VnZ2VzdGVkIGNhdGVnb3J5ICI8aW5wMjpjX0ZpZWxkIG5hbWU9Ik5hbWUiLz4iIGhhcyBiZWVuIGFkZGVkLg==</EVENT>
Index: units/logs/change_logs/change_log_eh.php
===================================================================
--- units/logs/change_logs/change_log_eh.php	(revision 14610)
+++ units/logs/change_logs/change_log_eh.php	(working copy)
@@ -19,4 +19,29 @@
 					WHERE SessionLogId = ' . $object->GetDBField('SessionLogId');
 			$this->Conn->Query($sql);
 		}
+		
+		/**
+		 * Allows to override standart permission mapping
+		 *
+		 */
+		function mapPermissions()
+		{
+			parent::mapPermissions();
+			$permissions = Array (
+				// admin
+				'OnEnableLog'	=>	Array('self' => 'view'), // because setting to logged in user only
+			);
+
+			$this->permMapping = array_merge($this->permMapping, $permissions);
+		}
+		
+		/**
+		 * Changes configuration value to enable log writing
+		 *
+		 * @param kEvent $event
+		 */
+		function OnEnableLog(&$event)
+		{
+			$this->Application->SetConfigValue('UseChangeLog', 1);
+		}
 	}
\ No newline at end of file
Index: units/logs/change_logs/change_log_tp.php
===================================================================
--- units/logs/change_logs/change_log_tp.php	(revision 0)
+++ units/logs/change_logs/change_log_tp.php	(revision 0)
@@ -0,0 +1,27 @@
+<?php
+/**
+* @version	$Id: change_log_tp.php 14244 2011-10-04 20:53:41Z erik $
+* @package	In-Portal
+* @copyright	Copyright (C) 1997 - 2011 Intechnic. All rights reserved.
+* @license      GNU/GPL
+* In-Portal is Open Source software.
+* This means that this software may have been modified pursuant
+* the GNU General Public License, and as distributed it includes
+* or is derivative of works licensed under the GNU General Public License
+* or other free or open source software licenses.
+* See http://www.in-portal.org/license for copyright notices and details.
+*/
+
+	defined('FULL_PATH') or die('restricted access!');
+
+	class ChangeLogTagProcessor extends kDBTagProcessor
+	{
+		
+		function PrintUseChangeLogMessage($params)
+		{
+			return sprintf(
+				$this->Application->Phrase('la_msg_ChangeLogIsCurrentlyDisabledTurnOnSettingToEnableIt'), 
+				$this->Application->ParseBlock( Array( 'name' => $this->SelectParam($params, 'render_as,name') ) )
+			);
+		}
+	}
\ No newline at end of file
Index: units/logs/change_logs/change_logs_config.php
===================================================================
--- units/logs/change_logs/change_logs_config.php	(revision 14610)
+++ units/logs/change_logs/change_logs_config.php	(working copy)
@@ -19,7 +19,7 @@
 		'ItemClass' => Array('class' => 'kDBItem', 'file' => '', 'build_event' => 'OnItemBuild'),
 		'ListClass' => Array('class' => 'kDBList', 'file' => '', 'build_event' => 'OnListBuild'),
 		'EventHandlerClass' => Array ('class' => 'ChangeLogEventHandler', 'file' => 'change_log_eh.php', 'build_event' => 'OnBuild'),
-		'TagProcessorClass' => Array ('class' => 'kDBTagProcessor', 'file' => '', 'build_event' => 'OnBuild'),
+		'TagProcessorClass' => Array ('class' => 'ChangeLogTagProcessor', 'file' => 'change_log_tp.php', 'build_event' => 'OnBuild'),
 
 		'RegisterClasses' => Array (
 			Array ('pseudo' => 'kChangesFormatter', 'class' => 'kChangesFormatter', 'file' => 'changes_formatter.php', 'build_event' => '', 'require_classes' => 'kFormatter'),