Index: admin_templates/logs/change_logs/change_log_list.tpl
===================================================================
--- admin_templates/logs/change_logs/change_log_list.tpl	(revision 14592)
+++ admin_templates/logs/change_logs/change_log_list.tpl	(working copy)
@@ -47,6 +47,13 @@
 								);
 
 								a_toolbar.Render();
+								
+								function enable_log()
+								{
+									if (inpConfirm('<inp2:m_Phrase name="la_msg_EnableTrackingDatabaseChangesToChangeLog" escape="1"/>')) {
+										submit_event('change-log', 'OnEnableLog');
+									}
+								}
 							</script>
 		  				</td>
 
@@ -88,6 +95,15 @@
 	<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_ConfigEquals" var="UseChangeLog" value="1">
+	<inp2:m_RenderElement design="form_message" pass_params="1">
+		<inp2:m_Phrase name="la_msg_ChangeLogIsCurrentlyDisabled"/> <inp2:m_Phrase name="la_msg_TurnOn"/> "<a href="javascript:enable_log()" class="error"><inp2:m_Phrase name="la_msg_TrackDatabaseChangesToChangeLog"/></a>" <inp2:m_Phrase name="la_msg_SettingToEnableIt"/><br/>
+	</inp2:m_RenderElement>
+	<inp2:m_RemoveVar name="event_used_in_order" />
+</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 14592)
+++ install/english.lang	(working copy)
@@ -1495,6 +1495,11 @@
 			<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_ChangeLogIsCurrentlyDisabled" Module="Core" Type="1">Q2hhbmdlIGxvZyBpcyBjdXJyZW50bHkgZGlzYWJsZWQu</PHRASE>
+			<PHRASE Label="la_msg_EnableTrackingDatabaseChangesToChangeLog" Module="Core" Type="1">RW5hYmxlIHRyYWNraW5nIGRhdGFiYXNlIGNoYW5nZXMgdG8gY2hhbmdlIGxvZz8=</PHRASE>
+			<PHRASE Label="la_msg_SettingToEnableIt" Module="Core" Type="1">c2V0dGluZyB0byBlbmFibGUgaXQu</PHRASE>
+			<PHRASE Label="la_msg_TrackDatabaseChangesToChangeLog" Module="Core" Type="1">VHJhY2sgZGF0YWJhc2UgY2hhbmdlcyB0byBjaGFuZ2UgbG9n</PHRASE>
+			<PHRASE Label="la_msg_TurnOn" Module="Core" Type="1">VHVybiBvbg==</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 14592)
+++ units/logs/change_logs/change_log_eh.php	(working copy)
@@ -19,4 +19,32 @@
 					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)
+		{
+			if (!$this->Application->isAdmin) {
+				return;
+			}
+			$this->Application->SetConfigValue('UseChangeLog', 1);
+		}
 	}
\ No newline at end of file