Fix tz output

htdocs/admin/system/dolibarr.php

 <?php
-/* Copyright (C) 2005-2011 Laurent Destailleur  <eldy@users.sourceforge.net>
+/* Copyright (C) 2005-2012 Laurent Destailleur  <eldy@users.sourceforge.net>
  * Copyright (C) 2007      Rodolphe Quiedeville <rodolphe@quiedeville.org>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -158,8 +158,8 @@ $txt.=$langs->trans("PHPTZ").' (php.ini date.timezone): '.(ini_get("date.timezon
 $var=!$var;
 print '<tr '.$bc[$var].'><td width="300">'.$langs->trans("CurrentTimeZone").'</td><td>';	// Timezone server PHP
 $a=getServerTimeZoneString();
-$a.=' '.getServerTimeZoneInt();
-$a.=' ('.(getServerTimeZoneInt()>0?'+':'').(getServerTimeZoneInt()*3600).')';
+$a.=' '.(getServerTimeZoneInt()>=0?'+':'').getServerTimeZoneInt();
+$a.=' ('.(getServerTimeZoneInt()>=0?'+':'').(getServerTimeZoneInt()*3600).')';
 print $form->textwithtooltip($a,$txt,2,1,img_info(''));
 print '</td></tr>'."\n";	// value defined in http://fr3.php.net/manual/en/timezones.europe.php
 $var=!$var;