fixed undeclared javascript variables

ChangeLog

@@ -11,6 +11,7 @@ $Source$
       - check config file also on wakeup (bug #1376522)
     * libraries/Config.class.php, libraries/common.lib.php:
       fixed handling of https and $cfg['ForceSSL'] (bug #1379491)
+    * left.php: fixed undeclared javascript variables
 
 2005-12-14 Michal Čihař  <michal@cihar.com>
     * libraries/config.default.php, Documentation.html: Transliterate invalid

left.php

@@ -79,12 +79,12 @@ echo "<?xml version=\"1.0\" encoding=\"" . $GLOBALS['charset'] . "\"?".">";
     <script type="text/javascript" language="javascript">
     //<![CDATA[
     function toggle( id, only_open ) {
-        el = document.getElementById('subel' + id);
+        var el = document.getElementById('subel' + id);
         if ( ! el ) {
             return false;
         }
 
-        img = document.getElementById('el' + id + 'Img');
+        var img = document.getElementById('el' + id + 'Img');
 
         if ( el.style.display == 'none' || only_open ) {
             el.style.display = '';