diff --git a/branches/old/gosa-core/include/utils/class_timezone.inc b/branches/old/gosa-core/include/utils/class_timezone.inc
--- /dev/null
@@ -0,0 +1,77 @@
+<?php
+/*
+ * This code is part of GOsa (https://gosa.gonicus.de)
+ * Copyright (C) 2008 Cajus Pollmeier
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+class timezone {
+
+ /* This function returns the offset for the default timezone.
+ * $stamp is used to detect summer or winter time.
+ * In case of PHP5, the integrated timezone functions are used.
+ */
+ static public function get_default_timezone($stamp = NULL)
+ {
+ global $config;
+ $tz ="";
+
+ /* Default return value if zone could not be detected */
+ $zone = array("name" => "unconfigured", "value" => 0);
+
+ /* Use current timestamp if $stamp is not set */
+ if($stamp === NULL){
+ $stamp = time();
+ }
+
+ /* Is there a timezone configured in the gosa configuration (gosa.conf) */
+ if ($config->get_cfg_value("timezone") != ""){
+
+ /* Get zonename */
+ $tz = $config->get_cfg_value("timezone");
+
+ if(!@date_default_timezone_set($tz)){
+ msg_dialog::display(_("Configuration error"), sprintf(_("The timezone setting '%s' in your gosa.conf is not valid. Cannot calculate correct timezone offset."), $tz), ERROR_DIALOG);
+ }
+ $tz_delta = date("Z", $stamp);
+ $tz_delta = $tz_delta / 3600 ;
+ return(array("name" => $tz, "value" => $tz_delta));
+
+ }
+ return($zone);
+ }
+
+
+ /* Return zone informations */
+ static public function _get_tz_zones()
+ {
+ $timezone_identifiers = DateTimeZone::listIdentifiers();
+ $timezones = array();
+ $zones = DateTimeZone::listAbbreviations();
+ foreach($zones as $group){
+ foreach($group as $zone) {
+ $timezones[$zone['timezone_id']] = $zone['offset'];
+ if($zone['dst']){
+ $dst_timezones[$zone['timezone_id']] = 1;
+ }
+ }
+ }
+ return(array("TIMEZONES" => @$timezones, "DST_ZONES" => @$dst_timezones));
+ }
+}
+
+// vim:tabstop=2:expandtab:shiftwidth=2:filetype=php:syntax:ruler:
+?>