anzuzeigene Chatnachrichten auf max 20 beim login

chat.php

@@ -82,7 +82,7 @@ if(isset($_GET['logoff'])){
 				$result = mysql_query("SELECT MAX(id) AS id FROM chat");
 				$chat = mysql_fetch_array($result);
 				mysql_query("UPDATE user SET chat = '{$chat['id']}' WHERE id = '{$_SESSION['chatuserid']}'");
-				$result = mysql_query("SELECT chat.nachricht, chat.chat_time, chat.user_id, user.name, chat.hideuser, chat.admin, chat.privat, chat.hideuser FROM chat LEFT JOIN user ON user.id = chat.user_id WHERE chat.hidden = '0' ORDER BY chat.id");
+				$result = mysql_query("SELECT chat.nachricht, chat.chat_time, chat.user_id, user.name, chat.hideuser, chat.admin, chat.privat, chat.hideuser FROM chat LEFT JOIN user ON user.id = chat.user_id WHERE chat.hidden = '0' ORDER BY chat.id LIMIT 0,20");
 				while($chat = mysql_fetch_array($result))		{
 					echo MessageFormat($chat['hideuser'], $chat['admin'], $chat['privat'], $chat['name'], $chat['chat_time'], $chat['nachricht'], $chat['user_id']);
 				}