diff --git a/action/ajax.php b/action/ajax.php
--- a/action/ajax.php
+++ b/action/ajax.php
@@ -1,128 +1,129 @@
 <?php
 
 if(!defined('DOKU_INC')) die();
 
 class action_plugin_davcal_ajax extends DokuWiki_Action_Plugin {
 
     /**
      * @var helper_plugin_publish
      */
     private $hlp = null;
 
     function __construct() {
         $this->hlp =& plugin_load('helper','davcal');
     }
 
     function register(Doku_Event_Handler $controller) {
         $controller->register_hook('AJAX_CALL_UNKNOWN', 'BEFORE', $this, 'handle_ajax_call_unknown');
     }
 
     function handle_ajax_call_unknown(&$event, $param) {
       if($event->data != 'plugin_davcal') return;
       
       $event->preventDefault();
       $event->stopPropagation();
       global $INPUT;
       
       $action = trim($INPUT->post->str('action'));
       $id = trim($INPUT->post->str('id'));
       $params = $INPUT->post->arr('params');
       $user = $_SERVER['REMOTE_USER'];
       $write = false;
       
       $data = array();
       
       $data['result'] = false;
       $data['html'] = $this->getLang('unknown_error');
       
       $acl = auth_quickaclcheck($id);
       if($acl > AUTH_READ)
       {
           $write = true;
       }
       
       switch($action)
       {
           case 'newEvent':
               if($write)
               {
                   $data['result'] = true;
                   $data['html'] = $this->getLang('event_added');
                   $this->hlp->addCalendarEntryToCalendarForPage($id, $user, $params);
               }
               else
               {
                   $data['result'] = false;
                   $data['html'] = $this->getLang('no_permission');
               }
           break;
           case 'getEvents':
               $startDate = $INPUT->post->str('start');
               $endDate = $INPUT->post->str('end');
               $data = $this->hlp->getEventsWithinDateRange($id, $user, $startDate, $endDate);
               
           break;
           case 'editEvent':
               if($write)
               {
                   $data['result'] = true;
                   $data['html'] = $this->getLang('event_edited');
                   $this->hlp->editCalendarEntryForPage($id, $user, $params);
               }
               else
               {
                   $data['result'] = false;
                   $data['html'] = $this->getLang('no_permission');
               }
           break;
           case 'deleteEvent':
               if($write)
               {
                   $data['result'] = true;
                   $data['html'] = $this->getLang('event_deleted');
                   $this->hlp->deleteCalendarEntryForPage($id, $params);
               }
               else 
               {
                   $data['result'] = false;
                   $data['html'] = $this->getLang('no_permission');
               }
           break;
           case 'getSettings':
               $data['result'] = true;
               $data['settings'] = $this->hlp->getPersonalSettings($user);
               $data['settings']['syncurl'] = $this->hlp->getSyncUrlForPage($id, $user);
+              $data['settings']['privateurl'] = $this->hlp->getPrivateURLForPage($id);
           break;
           case 'saveSettings':
               $settings = array();
               $settings['weeknumbers'] = $params['weeknumbers'];
               $settings['timezone'] = $params['timezone'];
               $settings['workweek'] = $params['workweek'];
               if($this->hlp->savePersonalSettings($settings, $user))
               {
                   $data['result'] = true;
                   $data['html'] = $this->getLang('settings_saved');
               }
               else
               {
                   $data['result'] = false;
                   $data['html'] = $this->getLang('error_saving');
               }
           break;
       }
               
               
               
               
       // If we are still here, JSON output is requested
       
       //json library of DokuWiki
       require_once DOKU_INC . 'inc/JSON.php';
       $json = new JSON();
  
       //set content type
       header('Content-Type: application/json');
       echo $json->encode($data);            
     }
  
 }              
\ No newline at end of file
diff --git a/db/latest.version b/db/latest.version
--- a/db/latest.version
+++ b/db/latest.version
@@ -1,1 +1,1 @@
-3
+4
diff --git a/db/update0004.sql b/db/update0004.sql
new file mode 100644
--- /dev/null
+++ b/db/update0004.sql
@@ -0,0 +1,5 @@
+CREATE TABLE calendartoprivateurlmapping (
+    id integer primary key asc,
+    url text,
+    calid integer
+);
diff --git a/helper.php b/helper.php
--- a/helper.php
+++ b/helper.php
@@ -1,481 +1,554 @@
 <?php
 /** 
   * Helper Class for the tagrevisions plugin
   * This helper does the actual work.
   * 
   * Configurable in DokuWiki's configuration
   */
   
 // must be run within Dokuwiki
 if(!defined('DOKU_INC')) die();
 
 class helper_plugin_davcal extends DokuWiki_Plugin {
   
   protected $sqlite = null;
   
   /**
     * Constructor to load the configuration
     */
   public function helper_plugin_davcal() {
     $this->sqlite =& plugin_load('helper', 'sqlite');
     if(!$this->sqlite)
     {
         msg('This plugin requires the sqlite plugin. Please install it.');
         return;
     }
     
     if(!$this->sqlite->init('davcal', DOKU_PLUGIN.'davcal/db/'))
     {
         return;
     }
   }
   
   public function setCalendarNameForPage($name, $description, $id = null, $userid = null)
   {
       if(is_null($id))
       {
           global $ID;
           $id = $ID;
       }
       if(is_null($userid))
         $userid = $_SERVER['REMOTE_USER'];
       $calid = $this->getCalendarIdForPage($id);
       if($calid === false)
         return $this->createCalendarForPage($name, $description, $id, $userid);
       
       $query = "UPDATE calendars SET displayname=".$this->sqlite->quote_string($name).", ".
                "description=".$this->sqlite->quote_string($description)." WHERE ".
                "id=".$this->sqlite->quote_string($calid);
       $res = $this->sqlite->query($query);
       if($res !== false)
         return true;
       return false;
   }
   
   public function savePersonalSettings($settings, $userid = null)
   {
       if(is_null($userid))
           $userid = $_SERVER['REMOTE_USER'];
       $this->sqlite->query("BEGIN TRANSACTION");
       
       $query = "DELETE FROM calendarsettings WHERE userid=".$this->sqlite->quote_string($userid);
       $this->sqlite->query($query);
       
       foreach($settings as $key => $value)
       {
           $query = "INSERT INTO calendarsettings (userid, key, value) VALUES (".
                    $this->sqlite->quote_string($userid).", ".
                    $this->sqlite->quote_string($key).", ".
                    $this->sqlite->quote_string($value).")";
           $res = $this->sqlite->query($query);
           if($res === false)
               return false;
       }
       $this->sqlite->query("COMMIT TRANSACTION");
       return true;
   }
   
   public function getPersonalSettings($userid = null)
   {
       if(is_null($userid))
         $userid = $_SERVER['REMOTE_USER'];
       // Some sane default settings
       $settings = array(
         'timezone' => 'local',
         'weeknumbers' => '0',
         'workweek' => '0'
       );
       $query = "SELECT key, value FROM calendarsettings WHERE userid=".$this->sqlite->quote_string($userid);
       $res = $this->sqlite->query($query);
       $arr = $this->sqlite->res2arr($res);
       foreach($arr as $row)
       {
           $settings[$row['key']] = $row['value'];
       }
       return $settings;
   }
   
   public function getCalendarIdForPage($id = null)
   {
       if(is_null($id))
       {
           global $ID;
           $id = $ID;
       }
       
       $query = "SELECT calid FROM pagetocalendarmapping WHERE page=".$this->sqlite->quote_string($id);
       $res = $this->sqlite->query($query);
       $row = $this->sqlite->res2row($res);
       if(isset($row['calid']))
         return $row['calid'];
       else
         return false;
   }
   
   public function getCalendarIdToPageMapping()
   {
       $query = "SELECT calid, page FROM pagetocalendarmapping";
       $res = $this->sqlite->query($query);
       $arr = $this->sqlite->res2arr($res);
       return $arr;
   }
   
   public function getCalendarIdsForUser($principalUri)
   {
       $user = explode('/', $principalUri);
       $user = end($user);
       $mapping = $this->getCalendarIdToPageMapping();
       $calids = array();
       foreach($mapping as $row)
       {
           $id = $row['calid'];
           $page = $row['page'];
           $acl = auth_quickaclcheck($page);
           if($acl >= AUTH_READ)
           {
               $write = $acl > AUTH_READ;
               $calids[$id] = array('readonly' => !$write);
           }
       }
       return $calids;
   }
   
   public function createCalendarForPage($name, $description, $id = null, $userid = null)
   {
       if(is_null($id))
       {
           global $ID;
           $id = $ID;
       }
       if(is_null($userid))
           $userid = $_SERVER['REMOTE_USER'];
       $values = array('principals/'.$userid, 
                       $name,
                       str_replace(array('/', ' ', ':'), '_', $id), 
                       $description,
                       'VEVENT,VTODO',
                       0,
                       1);
       $query = "INSERT INTO calendars (principaluri, displayname, uri, description, components, transparent, synctoken) VALUES (".$this->sqlite->quote_and_join($values, ',').");";
       $res = $this->sqlite->query($query);
       if($res === false)
         return false;
       $query = "SELECT id FROM calendars WHERE principaluri=".$this->sqlite->quote_string($values[0])." AND ".
                "displayname=".$this->sqlite->quote_string($values[1])." AND ".
                "uri=".$this->sqlite->quote_string($values[2])." AND ".
                "description=".$this->sqlite->quote_string($values[3]);
       $res = $this->sqlite->query($query);
       $row = $this->sqlite->res2row($res);
       if(isset($row['id']))
       {
           $values = array($id, $row['id']);
           $query = "INSERT INTO pagetocalendarmapping (page, calid) VALUES (".$this->sqlite->quote_and_join($values, ',').")";
           $res = $this->sqlite->query($query);
           return ($res !== false);
       }
       
       return false;
   }
 
   public function addCalendarEntryToCalendarForPage($id, $user, $params)
   {
       $settings = $this->getPersonalSettings($user);
       if($settings['timezone'] !== '' && $settings['timezone'] !== 'local')
           $timezone = new \DateTimeZone($settings['timezone']);
       elseif($settings['timezone'] === 'local')
           $timezone = new \DateTimeZone($params['detectedtz']);
       else
           $timezone = new \DateTimeZone('UTC');
       $startDate = explode('-', $params['eventfrom']);
       $startTime = explode(':', $params['eventfromtime']);
       $endDate = explode('-', $params['eventto']);
       $endTime = explode(':', $params['eventtotime']);
       require_once('vendor/autoload.php');
       $vcalendar = new \Sabre\VObject\Component\VCalendar();
       $event = $vcalendar->add('VEVENT');
       $uuid = \Sabre\VObject\UUIDUtil::getUUID();
       $event->add('UID', $uuid);
       $event->summary = $params['eventname'];
       $description = $params['eventdescription'];
       if($description !== '')
         $event->add('DESCRIPTION', $description);
       $dtStamp = new \DateTime(null, new \DateTimeZone('UTC'));
       $event->add('DTSTAMP', $dtStamp);
       $event->add('CREATED', $dtStamp);
       $event->add('LAST-MODIFIED', $dtStamp);
       $dtStart = new \DateTime();
       $dtStart->setTimezone($timezone);            
       $dtStart->setDate(intval($startDate[0]), intval($startDate[1]), intval($startDate[2]));
       if($params['allday'] != '1')
         $dtStart->setTime(intval($startTime[0]), intval($startTime[1]), 0);
       $dtEnd = new \DateTime();
       $dtEnd->setTimezone($timezone);      
       $dtEnd->setDate(intval($endDate[0]), intval($endDate[1]), intval($endDate[2]));
       if($params['allday'] != '1')
         $dtEnd->setTime(intval($endTime[0]), intval($endTime[1]), 0);
       // According to the VCal spec, we need to add a whole day here
       if($params['allday'] == '1')
           $dtEnd->add(new \DateInterval('P1D'));
       $dtStartEv = $event->add('DTSTART', $dtStart);
       $dtEndEv = $event->add('DTEND', $dtEnd);
       if($params['allday'] == '1')
       {
           $dtStartEv['VALUE'] = 'DATE';
           $dtEndEv['VALUE'] = 'DATE';
       }
       $calid = $this->getCalendarIdForPage($id);
       $uri = uniqid('dokuwiki-').'.ics';
       $now = new DateTime();
       $eventStr = $vcalendar->serialize();
       
       $values = array($calid,
                       $uri,
                       $eventStr,
                       $now->getTimestamp(),
                       'VEVENT',
                       $event->DTSTART->getDateTime()->getTimeStamp(),
                       $event->DTEND->getDateTime()->getTimeStamp(),
                       strlen($eventStr),
                       md5($eventStr),
                       uniqid()
       );
       
       $query = "INSERT INTO calendarobjects (calendarid, uri, calendardata, lastmodified, componenttype, firstoccurence, lastoccurence, size, etag, uid) VALUES (".$this->sqlite->quote_and_join($values, ',').")";
       $res = $this->sqlite->query($query);
       if($res !== false)
       {
           $this->updateSyncTokenLog($calid, $uri, 'added');
           return true;
       }
       return false;
   }
 
   public function getCalendarSettings($calid)
   {
       $query = "SELECT principaluri, displayname, uri, description, components, transparent, synctoken FROM calendars WHERE id=".$this->sqlite->quote_string($calid);
       $res = $this->sqlite->query($query);
       $row = $this->sqlite->res2row($res);
       return $row;
   }
 
   public function getEventsWithinDateRange($id, $user, $startDate, $endDate)
   {
       $settings = $this->getPersonalSettings($user);
       if($settings['timezone'] !== '' && $settings['timezone'] !== 'local')
           $timezone = new \DateTimeZone($settings['timezone']);
       else
           $timezone = new \DateTimeZone('UTC');
       $data = array();
       require_once('vendor/autoload.php');
       $calid = $this->getCalendarIdForPage($id);
       $startTs = new \DateTime($startDate);
       $endTs = new \DateTime($endDate);
       $query = "SELECT calendardata, componenttype, uid FROM calendarobjects WHERE (calendarid=".
                 $this->sqlite->quote_string($calid)." AND firstoccurence > ".
                 $this->sqlite->quote_string($startTs->getTimestamp())." AND firstoccurence < ".
                 $this->sqlite->quote_string($endTs->getTimestamp()).") OR (calendarid=".
                 $this->sqlite->quote_string($calid)." AND lastoccurence > ".
                 $this->sqlite->quote_string($startTs->getTimestamp())." AND lastoccurence < ".
                 $this->sqlite->quote_string($endTs->getTimestamp()).")";
       $res = $this->sqlite->query($query);
       $arr = $this->sqlite->res2arr($res);
       foreach($arr as $row)
       {
           if(isset($row['calendardata']))
           {
               $entry = array();
               $vcal = \Sabre\VObject\Reader::read($row['calendardata']);
               $start = $vcal->VEVENT->DTSTART;
               if($start !== null)
               {
                 $dtStart = $start->getDateTime();
                 $dtStart->setTimezone($timezone);
                 $entry['start'] = $dtStart->format(\DateTime::ATOM);
                 if($start['VALUE'] == 'DATE')
                   $entry['allDay'] = true;
                 else
                   $entry['allDay'] = false;
               }
               $end = $vcal->VEVENT->DTEND;
               if($end !== null)
               {
                 $dtEnd = $end->getDateTime();
                 $dtEnd->setTimezone($timezone);
                 $entry['end'] = $dtEnd->format(\DateTime::ATOM);
               }
               $description = $vcal->VEVENT->DESCRIPTION;
               if($description !== null)
                 $entry['description'] = (string)$description;
               else
                 $entry['description'] = '';
               $entry['title'] = (string)$vcal->VEVENT->summary;
               $entry['id'] = $row['uid']; 
               $data[] = $entry;
           }
       }
       return $data;
   }
   
   public function getEventWithUid($uid)
   {
       $query = "SELECT calendardata, calendarid, componenttype, uri FROM calendarobjects WHERE uid=".
                 $this->sqlite->quote_string($uid);
       $res = $this->sqlite->query($query);
       $row = $this->sqlite->res2row($res);
       return $row;
   }
   
+  public function getAllCalendarEvents($calid)
+  {
+      $query = "SELECT calendardata, uid, componenttype, uri FROM calendarobjects WHERE calendarid=".
+               $this->sqlite->quote_string($calid);
+      $res = $this->sqlite->query($query);
+      $arr = $this->sqlite->res2arr($res);
+      return $arr;
+  }
+  
   public function editCalendarEntryForPage($id, $user, $params)
   {
       $settings = $this->getPersonalSettings($user);
       if($settings['timezone'] !== '' && $settings['timezone'] !== 'local')
           $timezone = new \DateTimeZone($settings['timezone']);
       elseif($settings['timezone'] === 'local')
           $timezone = new \DateTimeZone($params['detectedtz']);
       else
           $timezone = new \DateTimeZone('UTC');
       $startDate = explode('-', $params['eventfrom']);
       $startTime = explode(':', $params['eventfromtime']);
       $endDate = explode('-', $params['eventto']);
       $endTime = explode(':', $params['eventtotime']);
       $uid = $params['uid'];
       $event = $this->getEventWithUid($uid);
       require_once('vendor/autoload.php');
       if(!isset($event['calendardata']))
         return false;
       $uri = $event['uri'];
       $calid = $event['calendarid'];
       $vcal = \Sabre\VObject\Reader::read($event['calendardata']);
       $vevent = $vcal->VEVENT;
       $vevent->summary = $params['eventname'];
       $dtStamp = new \DateTime(null, new \DateTimeZone('UTC'));
       $description = $params['eventdescription'];
       $vevent->remove('DESCRIPTION');      
       $vevent->remove('DTSTAMP');
       $vevent->remove('LAST-MODIFIED');
       $vevent->add('DTSTAMP', $dtStamp);
       $vevent->add('LAST-MODIFIED', $dtStamp);
       if($description !== '')
         $vevent->add('DESCRIPTION', $description);      
       $dtStart = new \DateTime();
       $dtStart->setTimezone($timezone);      
       $dtStart->setDate(intval($startDate[0]), intval($startDate[1]), intval($startDate[2]));
       if($params['allday'] != '1')
         $dtStart->setTime(intval($startTime[0]), intval($startTime[1]), 0);
       $dtEnd = new \DateTime();
       $dtEnd->setTimezone($timezone);      
       $dtEnd->setDate(intval($endDate[0]), intval($endDate[1]), intval($endDate[2]));
       if($params['allday'] != '1')
         $dtEnd->setTime(intval($endTime[0]), intval($endTime[1]), 0);
       // According to the VCal spec, we need to add a whole day here
       if($params['allday'] == '1')
           $dtEnd->add(new \DateInterval('P1D'));
       $vevent->remove('DTSTART');
       $vevent->remove('DTEND');
       $dtStartEv = $vevent->add('DTSTART', $dtStart);
       $dtEndEv = $vevent->add('DTEND', $dtEnd);
       if($params['allday'] == '1')
       {
           $dtStartEv['VALUE'] = 'DATE';
           $dtEndEv['VALUE'] = 'DATE';
       }
       $now = new DateTime();
       $eventStr = $vcal->serialize();
       
       $query = "UPDATE calendarobjects SET calendardata=".$this->sqlite->quote_string($eventStr).
                ", lastmodified=".$this->sqlite->quote_string($now->getTimestamp()).
                ", firstoccurence=".$this->sqlite->quote_string($dtStart->getTimestamp()).
                ", lastoccurence=".$this->sqlite->quote_string($dtEnd->getTimestamp()).
                ", size=".strlen($eventStr).
                ", etag=".$this->sqlite->quote_string(md5($eventStr)).
                " WHERE uid=".$this->sqlite->quote_string($uid);
       $res = $this->sqlite->query($query);
       if($res !== false)
       {
           $this->updateSyncTokenLog($calid, $uri, 'modified');
           return true;
       }
       return false;
   }
 
   public function deleteCalendarEntryForPage($id, $params)
   {
       $uid = $params['uid'];
       $event = $this->getEventWithUid($uid);
       $calid = $event['calendarid'];
       $uri = $event['uri'];
       $query = "DELETE FROM calendarobjects WHERE uid=".$this->sqlite->quote_string($uid);
       $res = $this->sqlite->query($query);
       if($res !== false)
       {
           $this->updateSyncTokenLog($calid, $uri, 'deleted');
       }
       return true;
   }
   
   public function getSyncTokenForCalendar($calid)
   {
       $row = $this->getCalendarSettings($calid);
       if(isset($row['synctoken']))
           return $row['synctoken'];
       return false;
   }
   
   public function operationNameToOperation($operationName)
   {
       switch($operationName)
       {
           case 'added':
               return 1;
           break;
           case 'modified':
               return 2;
           break;
           case 'deleted':
               return 3;
           break;
       }
       return false;
   }
   
   private function updateSyncTokenLog($calid, $uri, $operation)
   {
       $currentToken = $this->getSyncTokenForCalendar($calid);
       $operationCode = $this->operationNameToOperation($operation);
       if(($operationCode === false) || ($currentToken === false))
           return false;
       $values = array($uri,
                       $currentToken,
                       $calid,
                       $operationCode
       );
       $query = "INSERT INTO calendarchanges (uri, synctoken, calendarid, operation) VALUES(".
                $this->sqlite->quote_and_join($values, ',').")";
       $res = $this->sqlite->query($query);
       if($res === false)
         return false;
       $currentToken++;
       $query = "UPDATE calendars SET synctoken=".$this->sqlite->quote_string($currentToken)." WHERE id=".
                $this->sqlite->quote_string($calid);
       $res = $this->sqlite->query($query);
       return ($res !== false);
   }
   
   public function getSyncUrlForPage($id, $user = null)
   {
       if(is_null($user))
         $user = $_SERVER['REMOTE_USER'];
       
       $calid = $this->getCalendarIdForPage($id);
       if($calid === false)
         return false;
       
       $calsettings = $this->getCalendarSettings($calid);
       if(!isset($calsettings['uri']))
         return false;
       
       $syncurl = DOKU_URL.'lib/plugins/davcal/calendarserver.php/calendars/'.$user.'/'.$calsettings['uri'];
       return $syncurl; 
   }
   
+  public function getPrivateURLForPage($id)
+  {
+      $calid = $this->getCalendarIdForPage($id);
+      if($calid === false)
+        return false;
+      
+      return $this->getPrivateURLForCalendar($calid);
+  }
+  
+  public function getPrivateURLForCalendar($calid)
+  {
+      $query = "SELECT url FROM calendartoprivateurlmapping WHERE calid=".$this->sqlite->quote_string($calid);
+      $res = $this->sqlite->query($query);
+      $row = $this->sqlite->res2row($res);
+      if(!isset($row['url']))
+      {
+          $url = uniqid("dokuwiki-").".ics";
+          $values = array(
+                $url,
+                $calid
+          );
+          $query = "INSERT INTO calendartoprivateurlmapping (url, calid) VALUES(".
+                $this->sqlite->quote_and_join($values, ", ").")";
+          $res = $this->sqlite->query($query);
+          if($res === false)
+            return false;
+      }
+      else
+      {
+          $url = $row['url'];
+      }
+      return DOKU_URL.'lib/plugins/davcal/calendarserver.php/calendars/'.$url;
+  }
+  
+  public function getCalendarForPrivateURL($url)
+  {
+      $query = "SELECT calid FROM calendartoprivateurlmapping WHERE url=".$this->sqlite->quote_string($url);
+      $res = $this->sqlite->query($query);
+      $row = $this->sqlite->res2row($res);
+      if(!isset($row['calid']))
+        return false;
+      return $row['calid'];
+  }
+  
+  public function getCalendarAsICSFeed($calid)
+  {
+      $calSettings = $this->getCalendarSettings($calid);
+      if($calSettings === false)
+        return false;
+      $events = $this->getAllCalendarEvents($calid);
+      if($events === false)
+        return false;
+      
+      $out = "BEGIN:VCALENDAR\nVERSION:2.0\nPRODID:-//DAVCal//DAVCal for DokuWiki//EN\nCALSCALE:GREGORIAN\nX-WR-CALNAME:";
+      $out .= $calSettings['displayname']."\n";
+      foreach($events as $event)
+      {
+          $out .= rtrim($event['calendardata']);
+          $out .= "\n";
+      }
+      $out .= "END:VCALENDAR\n";
+      return $out;
+  }
+  
 }
diff --git a/ics.php b/ics.php
new file mode 100644
--- /dev/null
+++ b/ics.php
@@ -0,0 +1,22 @@
+<?php
+
+if(!defined('DOKU_INC')) define('DOKU_INC', dirname(__FILE__).'/../../../');
+if (!defined('DOKU_DISABLE_GZIP_OUTPUT')) define('DOKU_DISABLE_GZIP_OUTPUT', 1);
+require_once(DOKU_INC.'inc/init.php');
+session_write_close(); //close session
+
+$path = explode('/', $_SERVER['REQUEST_URI']);
+$icsFile = end($path);
+
+$hlp = plugin_load('helper', 'davcal');
+
+$calid = $hlp->getCalendarForPrivateURL($icsFile);
+
+if($calid === false)
+    die("No calendar with this name known.");
+
+$stream = $hlp->getCalendarAsICSFeed($calid);
+header("Content-Type: text/calendar");
+header("Content-Transfer-Encoding: Binary");
+header("Content-disposition: attachment; filename=\"calendar.ics\"");
+echo $stream;
\ No newline at end of file
diff --git a/jstz.js b/jstz.js
new file mode 100644
--- /dev/null
+++ b/jstz.js
@@ -0,0 +1,1313 @@
+(function (root) {/*global exports, Intl*/
+/**
+ * This script gives you the zone info key representing your device's time zone setting.
+ *
+ * @name jsTimezoneDetect
+ * @version 1.0.5
+ * @author Jon Nylander
+ * @license MIT License - https://bitbucket.org/pellepim/jstimezonedetect/src/default/LICENCE.txt
+ *
+ * For usage and examples, visit:
+ * http://pellepim.bitbucket.org/jstz/
+ *
+ * Copyright (c) Jon Nylander
+ */
+
+
+/**
+ * Namespace to hold all the code for timezone detection.
+ */
+var jstz = (function () {
+    'use strict';
+    var HEMISPHERE_SOUTH = 's',
+
+        consts = {
+            DAY: 86400000,
+            HOUR: 3600000,
+            MINUTE: 60000,
+            SECOND: 1000,
+            BASELINE_YEAR: 2014,
+            MAX_SCORE: 864000000, // 10 days
+            AMBIGUITIES: {
+                'America/Denver':       ['America/Mazatlan'],
+                'America/Chicago':      ['America/Mexico_City'],
+                'America/Santiago':     ['America/Asuncion', 'America/Campo_Grande'],
+                'America/Montevideo':   ['America/Sao_Paulo'],
+                // Europe/Minsk should not be in this list... but Windows.
+                'Asia/Beirut':          ['Asia/Amman', 'Asia/Jerusalem', 'Europe/Helsinki', 'Asia/Damascus', 'Africa/Cairo', 'Asia/Gaza', 'Europe/Minsk'],
+                'Pacific/Auckland':     ['Pacific/Fiji'],
+                'America/Los_Angeles':  ['America/Santa_Isabel'],
+                'America/New_York':     ['America/Havana'],
+                'America/Halifax':      ['America/Goose_Bay'],
+                'America/Godthab':      ['America/Miquelon'],
+                'Asia/Dubai':           ['Asia/Yerevan'],
+                'Asia/Jakarta':         ['Asia/Krasnoyarsk'],
+                'Asia/Shanghai':        ['Asia/Irkutsk', 'Australia/Perth'],
+                'Australia/Sydney':     ['Australia/Lord_Howe'],
+                'Asia/Tokyo':           ['Asia/Yakutsk'],
+                'Asia/Dhaka':           ['Asia/Omsk'],
+                // In the real world Yerevan is not ambigous for Baku... but Windows.
+                'Asia/Baku':            ['Asia/Yerevan'],
+                'Australia/Brisbane':   ['Asia/Vladivostok'],
+                'Pacific/Noumea':       ['Asia/Vladivostok'],
+                'Pacific/Majuro':       ['Asia/Kamchatka', 'Pacific/Fiji'],
+                'Pacific/Tongatapu':    ['Pacific/Apia'],
+                'Asia/Baghdad':         ['Europe/Minsk', 'Europe/Moscow'],
+                'Asia/Karachi':         ['Asia/Yekaterinburg'],
+                'Africa/Johannesburg':  ['Asia/Gaza', 'Africa/Cairo']
+            }
+        },
+
+        /**
+         * Gets the offset in minutes from UTC for a certain date.
+         * @param {Date} date
+         * @returns {Number}
+         */
+        get_date_offset = function get_date_offset(date) {
+            var offset = -date.getTimezoneOffset();
+            return (offset !== null ? offset : 0);
+        },
+
+        /**
+         * This function does some basic calculations to create information about
+         * the user's timezone. It uses REFERENCE_YEAR as a solid year for which
+         * the script has been tested rather than depend on the year set by the
+         * client device.
+         *
+         * Returns a key that can be used to do lookups in jstz.olson.timezones.
+         * eg: "720,1,2".
+         *
+         * @returns {String}
+         */
+        lookup_key = function lookup_key() {
+            var january_offset = get_date_offset(new Date(consts.BASELINE_YEAR, 0, 2)),
+                june_offset = get_date_offset(new Date(consts.BASELINE_YEAR, 5, 2)),
+                diff = january_offset - june_offset;
+
+            if (diff < 0) {
+                return january_offset + ",1";
+            } else if (diff > 0) {
+                return june_offset + ",1," + HEMISPHERE_SOUTH;
+            }
+
+            return january_offset + ",0";
+        },
+
+
+        /**
+         * Tries to get the time zone key directly from the operating system for those
+         * environments that support the ECMAScript Internationalization API.
+         */
+        get_from_internationalization_api = function get_from_internationalization_api() {
+            if (typeof Intl === "undefined" || typeof Intl.DateTimeFormat === "undefined") {
+                return;
+            }
+            var format = Intl.DateTimeFormat();
+            if (typeof format === "undefined" || typeof format.resolvedOptions === "undefined") {
+                return;
+            }
+            return format.resolvedOptions().timeZone;
+        },
+
+        /**
+         * Starting point for getting all the DST rules for a specific year
+         * for the current timezone (as described by the client system).
+         *
+         * Returns an object with start and end attributes, or false if no
+         * DST rules were found for the year.
+         *
+         * @param year
+         * @returns {Object} || {Boolean}
+         */
+        dst_dates = function dst_dates(year) {
+            var yearstart = new Date(year, 0, 1, 0, 0, 1, 0).getTime();
+            var yearend = new Date(year, 12, 31, 23, 59, 59).getTime();
+            var current = yearstart;
+            var offset = (new Date(current)).getTimezoneOffset();
+            var dst_start = null;
+            var dst_end = null;
+
+            while (current < yearend - 86400000) {
+                var dateToCheck = new Date(current);
+                var dateToCheckOffset = dateToCheck.getTimezoneOffset();
+
+                if (dateToCheckOffset !== offset) {
+                    if (dateToCheckOffset < offset) {
+                        dst_start = dateToCheck;
+                    }
+                    if (dateToCheckOffset > offset) {
+                        dst_end = dateToCheck;
+                    }
+                    offset = dateToCheckOffset;
+                }
+
+                current += 86400000;
+            }
+
+            if (dst_start && dst_end) {
+                return {
+                    s: find_dst_fold(dst_start).getTime(),
+                    e: find_dst_fold(dst_end).getTime()
+                };
+            }
+
+            return false;
+        },
+
+        /**
+         * Probably completely unnecessary function that recursively finds the
+         * exact (to the second) time when a DST rule was changed.
+         *
+         * @param a_date - The candidate Date.
+         * @param padding - integer specifying the padding to allow around the candidate
+         *                  date for finding the fold.
+         * @param iterator - integer specifying how many milliseconds to iterate while
+         *                   searching for the fold.
+         *
+         * @returns {Date}
+         */
+        find_dst_fold = function find_dst_fold(a_date, padding, iterator) {
+            if (typeof padding === 'undefined') {
+                padding = consts.DAY;
+                iterator = consts.HOUR;
+            }
+
+            var date_start = new Date(a_date.getTime() - padding).getTime();
+            var date_end = a_date.getTime() + padding;
+            var offset = new Date(date_start).getTimezoneOffset();
+
+            var current = date_start;
+
+            var dst_change = null;
+            while (current < date_end - iterator) {
+                var dateToCheck = new Date(current);
+                var dateToCheckOffset = dateToCheck.getTimezoneOffset();
+
+                if (dateToCheckOffset !== offset) {
+                    dst_change = dateToCheck;
+                    break;
+                }
+                current += iterator;
+            }
+
+            if (padding === consts.DAY) {
+                return find_dst_fold(dst_change, consts.HOUR, consts.MINUTE);
+            }
+
+            if (padding === consts.HOUR) {
+                return find_dst_fold(dst_change, consts.MINUTE, consts.SECOND);
+            }
+
+            return dst_change;
+        },
+
+        windows7_adaptations = function windows7_adaptions(rule_list, preliminary_timezone, score, sample) {
+            if (score !== 'N/A') {
+                return score;
+            }
+            if (preliminary_timezone === 'Asia/Beirut') {
+                if (sample.name === 'Africa/Cairo') {
+                    if (rule_list[6].s === 1398376800000 && rule_list[6].e === 1411678800000) {
+                        return 0;
+                    }
+                }
+                if (sample.name === 'Asia/Jerusalem') {
+                    if (rule_list[6].s === 1395964800000 && rule_list[6].e === 1411858800000) {
+                        return 0;
+                }
+            }
+            } else if (preliminary_timezone === 'America/Santiago') {
+                if (sample.name === 'America/Asuncion') {
+                    if (rule_list[6].s === 1412481600000 && rule_list[6].e === 1397358000000) {
+                        return 0;
+                    }
+                }
+                if (sample.name === 'America/Campo_Grande') {
+                    if (rule_list[6].s === 1413691200000 && rule_list[6].e === 1392519600000) {
+                        return 0;
+                    }
+                }
+            } else if (preliminary_timezone === 'America/Montevideo') {
+                if (sample.name === 'America/Sao_Paulo') {
+                    if (rule_list[6].s === 1413687600000 && rule_list[6].e === 1392516000000) {
+                        return 0;
+                    }
+                }
+            } else if (preliminary_timezone === 'Pacific/Auckland') {
+                if (sample.name === 'Pacific/Fiji') {
+                    if (rule_list[6].s === 1414245600000 && rule_list[6].e === 1396101600000) {
+                        return 0;
+                    }
+                }
+            }
+
+            return score;
+        },
+
+        /**
+         * Takes the DST rules for the current timezone, and proceeds to find matches
+         * in the jstz.olson.dst_rules.zones array.
+         *
+         * Compares samples to the current timezone on a scoring basis.
+         *
+         * Candidates are ruled immediately if either the candidate or the current zone
+         * has a DST rule where the other does not.
+         *
+         * Candidates are ruled out immediately if the current zone has a rule that is
+         * outside the DST scope of the candidate.
+         *
+         * Candidates are included for scoring if the current zones rules fall within the
+         * span of the samples rules.
+         *
+         * Low score is best, the score is calculated by summing up the differences in DST
+         * rules and if the consts.MAX_SCORE is overreached the candidate is ruled out.
+         *
+         * Yah follow? :)
+         *
+         * @param rule_list
+         * @param preliminary_timezone
+         * @returns {*}
+         */
+        best_dst_match = function best_dst_match(rule_list, preliminary_timezone) {
+            var score_sample = function score_sample(sample) {
+                var score = 0;
+
+                for (var j = 0; j < rule_list.length; j++) {
+
+                    // Both sample and current time zone report DST during the year.
+                    if (!!sample.rules[j] && !!rule_list[j]) {
+
+                        // The current time zone's DST rules are inside the sample's. Include.
+                        if (rule_list[j].s >= sample.rules[j].s && rule_list[j].e <= sample.rules[j].e) {
+                            score = 0;
+                            score += Math.abs(rule_list[j].s - sample.rules[j].s);
+                            score += Math.abs(sample.rules[j].e - rule_list[j].e);
+
+                        // The current time zone's DST rules are outside the sample's. Discard.
+                        } else {
+                            score = 'N/A';
+                            break;
+                        }
+
+                        // The max score has been reached. Discard.
+                        if (score > consts.MAX_SCORE) {
+                            score = 'N/A';
+                            break;
+                        }
+                    }
+                }
+
+                score = windows7_adaptations(rule_list, preliminary_timezone, score, sample);
+
+                return score;
+            };
+            var scoreboard = {};
+            var dst_zones = jstz.olson.dst_rules.zones;
+            var dst_zones_length = dst_zones.length;
+            var ambiguities = consts.AMBIGUITIES[preliminary_timezone];
+
+            for (var i = 0; i < dst_zones_length; i++) {
+                var sample = dst_zones[i];
+                var score = score_sample(dst_zones[i]);
+
+                if (score !== 'N/A') {
+                    scoreboard[sample.name] = score;
+                }
+            }
+
+            for (var tz in scoreboard) {
+                if (scoreboard.hasOwnProperty(tz)) {
+                    if (ambiguities.indexOf(tz) != -1) {
+                        return tz;
+                    }
+                }
+            }
+
+            return preliminary_timezone;
+        },
+
+        /**
+         * Takes the preliminary_timezone as detected by lookup_key().
+         *
+         * Builds up the current timezones DST rules for the years defined
+         * in the jstz.olson.dst_rules.years array.
+         *
+         * If there are no DST occurences for those years, immediately returns
+         * the preliminary timezone. Otherwise proceeds and tries to solve
+         * ambiguities.
+         *
+         * @param preliminary_timezone
+         * @returns {String} timezone_name
+         */
+        get_by_dst = function get_by_dst(preliminary_timezone) {
+            var get_rules = function get_rules() {
+                var rule_list = [];
+                for (var i = 0; i < jstz.olson.dst_rules.years.length; i++) {
+                    var year_rules = dst_dates(jstz.olson.dst_rules.years[i]);
+                    rule_list.push(year_rules);
+                }
+                return rule_list;
+            };
+            var check_has_dst = function check_has_dst(rules) {
+                for (var i = 0; i < rules.length; i++) {
+                    if (rules[i] !== false) {
+                        return true;
+                    }
+                }
+                return false;
+            };
+            var rules = get_rules();
+            var has_dst = check_has_dst(rules);
+
+            if (has_dst) {
+                return best_dst_match(rules, preliminary_timezone);
+            }
+
+            return preliminary_timezone;
+        },
+
+        /**
+         * Uses get_timezone_info() to formulate a key to use in the olson.timezones dictionary.
+         *
+         * Returns an object with one function ".name()"
+         *
+         * @returns Object
+         */
+        determine = function determine() {
+            var preliminary_tz = get_from_internationalization_api();
+
+            if (!preliminary_tz) {
+                preliminary_tz = jstz.olson.timezones[lookup_key()];
+
+                if (typeof consts.AMBIGUITIES[preliminary_tz] !== 'undefined') {
+                    preliminary_tz = get_by_dst(preliminary_tz);
+                }
+            }
+
+            return {
+                name: function () {
+                    return preliminary_tz;
+                }
+            };
+        };
+
+    return {
+        determine: determine
+    };
+}());
+
+
+jstz.olson = jstz.olson || {};
+
+/**
+ * The keys in this dictionary are comma separated as such:
+ *
+ * First the offset compared to UTC time in minutes.
+ *
+ * Then a flag which is 0 if the timezone does not take daylight savings into account and 1 if it
+ * does.
+ *
+ * Thirdly an optional 's' signifies that the timezone is in the southern hemisphere,
+ * only interesting for timezones with DST.
+ *
+ * The mapped arrays is used for constructing the jstz.TimeZone object from within
+ * jstz.determine();
+ */
+jstz.olson.timezones = {
+    '-720,0': 'Etc/GMT+12',
+    '-660,0': 'Pacific/Pago_Pago',
+    '-660,1,s': 'Pacific/Apia', // Why? Because windows... cry!
+    '-600,1': 'America/Adak',
+    '-600,0': 'Pacific/Honolulu',
+    '-570,0': 'Pacific/Marquesas',
+    '-540,0': 'Pacific/Gambier',
+    '-540,1': 'America/Anchorage',
+    '-480,1': 'America/Los_Angeles',
+    '-480,0': 'Pacific/Pitcairn',
+    '-420,0': 'America/Phoenix',
+    '-420,1': 'America/Denver',
+    '-360,0': 'America/Guatemala',
+    '-360,1': 'America/Chicago',
+    '-360,1,s': 'Pacific/Easter',
+    '-300,0': 'America/Bogota',
+    '-300,1': 'America/New_York',
+    '-270,0': 'America/Caracas',
+    '-240,1': 'America/Halifax',
+    '-240,0': 'America/Santo_Domingo',
+    '-240,1,s': 'America/Santiago',
+    '-210,1': 'America/St_Johns',
+    '-180,1': 'America/Godthab',
+    '-180,0': 'America/Argentina/Buenos_Aires',
+    '-180,1,s': 'America/Montevideo',
+    '-120,0': 'America/Noronha',
+    '-120,1': 'America/Noronha',
+    '-60,1': 'Atlantic/Azores',
+    '-60,0': 'Atlantic/Cape_Verde',
+    '0,0': 'UTC',
+    '0,1': 'Europe/London',
+    '60,1': 'Europe/Berlin',
+    '60,0': 'Africa/Lagos',
+    '60,1,s': 'Africa/Windhoek',
+    '120,1': 'Asia/Beirut',
+    '120,0': 'Africa/Johannesburg',
+    '180,0': 'Asia/Baghdad',
+    '180,1': 'Europe/Moscow',
+    '210,1': 'Asia/Tehran',
+    '240,0': 'Asia/Dubai',
+    '240,1': 'Asia/Baku',
+    '270,0': 'Asia/Kabul',
+    '300,1': 'Asia/Yekaterinburg',
+    '300,0': 'Asia/Karachi',
+    '330,0': 'Asia/Kolkata',
+    '345,0': 'Asia/Kathmandu',
+    '360,0': 'Asia/Dhaka',
+    '360,1': 'Asia/Omsk',
+    '390,0': 'Asia/Rangoon',
+    '420,1': 'Asia/Krasnoyarsk',
+    '420,0': 'Asia/Jakarta',
+    '480,0': 'Asia/Shanghai',
+    '480,1': 'Asia/Irkutsk',
+    '525,0': 'Australia/Eucla',
+    '525,1,s': 'Australia/Eucla',
+    '540,1': 'Asia/Yakutsk',
+    '540,0': 'Asia/Tokyo',
+    '570,0': 'Australia/Darwin',
+    '570,1,s': 'Australia/Adelaide',
+    '600,0': 'Australia/Brisbane',
+    '600,1': 'Asia/Vladivostok',
+    '600,1,s': 'Australia/Sydney',
+    '630,1,s': 'Australia/Lord_Howe',
+    '660,1': 'Asia/Kamchatka',
+    '660,0': 'Pacific/Noumea',
+    '690,0': 'Pacific/Norfolk',
+    '720,1,s': 'Pacific/Auckland',
+    '720,0': 'Pacific/Majuro',
+    '765,1,s': 'Pacific/Chatham',
+    '780,0': 'Pacific/Tongatapu',
+    '780,1,s': 'Pacific/Apia',
+    '840,0': 'Pacific/Kiritimati'
+};
+
+/* Build time: 2014-11-28 11:10:50Z Build by invoking python utilities/dst.py generate */
+jstz.olson.dst_rules = {
+    "years": [
+        2008,
+        2009,
+        2010,
+        2011,
+        2012,
+        2013,
+        2014
+    ],
+    "zones": [
+        {
+            "name": "Africa/Cairo",
+            "rules": [
+                {
+                    "e": 1219957200000,
+                    "s": 1209074400000
+                },
+                {
+                    "e": 1250802000000,
+                    "s": 1240524000000
+                },
+                {
+                    "e": 1285880400000,
+                    "s": 1284069600000
+                },
+                false,
+                false,
+                false,
+                {
+                    "e": 1411678800000,
+                    "s": 1406844000000
+                }
+            ]
+        },
+        {
+            "name": "America/Asuncion",
+            "rules": [
+                {
+                    "e": 1205031600000,
+                    "s": 1224388800000
+                },
+                {
+                    "e": 1236481200000,
+                    "s": 1255838400000
+                },
+                {
+                    "e": 1270954800000,
+                    "s": 1286078400000
+                },
+                {
+                    "e": 1302404400000,
+                    "s": 1317528000000
+                },
+                {
+                    "e": 1333854000000,
+                    "s": 1349582400000
+                },
+                {
+                    "e": 1364094000000,
+                    "s": 1381032000000
+                },
+                {
+                    "e": 1395543600000,
+                    "s": 1412481600000
+                }
+            ]
+        },
+        {
+            "name": "America/Campo_Grande",
+            "rules": [
+                {
+                    "e": 1203217200000,
+                    "s": 1224388800000
+                },
+                {
+                    "e": 1234666800000,
+                    "s": 1255838400000
+                },
+                {
+                    "e": 1266721200000,
+                    "s": 1287288000000
+                },
+                {
+                    "e": 1298170800000,
+                    "s": 1318737600000
+                },
+                {
+                    "e": 1330225200000,
+                    "s": 1350792000000
+                },
+                {
+                    "e": 1361070000000,
+                    "s": 1382241600000
+                },
+                {
+                    "e": 1392519600000,
+                    "s": 1413691200000
+                }
+            ]
+        },
+        {
+            "name": "America/Goose_Bay",
+            "rules": [
+                {
+                    "e": 1225594860000,
+                    "s": 1205035260000
+                },
+                {
+                    "e": 1257044460000,
+                    "s": 1236484860000
+                },
+                {
+                    "e": 1289098860000,
+                    "s": 1268539260000
+                },
+                {
+                    "e": 1320555600000,
+                    "s": 1299988860000
+                },
+                {
+                    "e": 1352005200000,
+                    "s": 1331445600000
+                },
+                {
+                    "e": 1383454800000,
+                    "s": 1362895200000
+                },
+                {
+                    "e": 1414904400000,
+                    "s": 1394344800000
+                }
+            ]
+        },
+        {
+            "name": "America/Havana",
+            "rules": [
+                {
+                    "e": 1224997200000,
+                    "s": 1205643600000
+                },
+                {
+                    "e": 1256446800000,
+                    "s": 1236488400000
+                },
+                {
+                    "e": 1288501200000,
+                    "s": 1268542800000
+                },
+                {
+                    "e": 1321160400000,
+                    "s": 1300597200000
+                },
+                {
+                    "e": 1352005200000,
+                    "s": 1333256400000
+                },
+                {
+                    "e": 1383454800000,
+                    "s": 1362891600000
+                },
+                {
+                    "e": 1414904400000,
+                    "s": 1394341200000
+                }
+            ]
+        },
+        {
+            "name": "America/Mazatlan",
+            "rules": [
+                {
+                    "e": 1225008000000,
+                    "s": 1207472400000
+                },
+                {
+                    "e": 1256457600000,
+                    "s": 1238922000000
+                },
+                {
+                    "e": 1288512000000,
+                    "s": 1270371600000
+                },
+                {
+                    "e": 1319961600000,
+                    "s": 1301821200000
+                },
+                {
+                    "e": 1351411200000,
+                    "s": 1333270800000
+                },
+                {
+                    "e": 1382860800000,
+                    "s": 1365325200000
+                },
+                {
+                    "e": 1414310400000,
+                    "s": 1396774800000
+                }
+            ]
+        },
+        {
+            "name": "America/Mexico_City",
+            "rules": [
+                {
+                    "e": 1225004400000,
+                    "s": 1207468800000
+                },
+                {
+                    "e": 1256454000000,
+                    "s": 1238918400000
+                },
+                {
+                    "e": 1288508400000,
+                    "s": 1270368000000
+                },
+                {
+                    "e": 1319958000000,
+                    "s": 1301817600000
+                },
+                {
+                    "e": 1351407600000,
+                    "s": 1333267200000
+                },
+                {
+                    "e": 1382857200000,
+                    "s": 1365321600000
+                },
+                {
+                    "e": 1414306800000,
+                    "s": 1396771200000
+                }
+            ]
+        },
+        {
+            "name": "America/Miquelon",
+            "rules": [
+                {
+                    "e": 1225598400000,
+                    "s": 1205038800000
+                },
+                {
+                    "e": 1257048000000,
+                    "s": 1236488400000
+                },
+                {
+                    "e": 1289102400000,
+                    "s": 1268542800000
+                },
+                {
+                    "e": 1320552000000,
+                    "s": 1299992400000
+                },
+                {
+                    "e": 1352001600000,
+                    "s": 1331442000000
+                },
+                {
+                    "e": 1383451200000,
+                    "s": 1362891600000
+                },
+                {
+                    "e": 1414900800000,
+                    "s": 1394341200000
+                }
+            ]
+        },
+        {
+            "name": "America/Santa_Isabel",
+            "rules": [
+                {
+                    "e": 1225011600000,
+                    "s": 1207476000000
+                },
+                {
+                    "e": 1256461200000,
+                    "s": 1238925600000
+                },
+                {
+                    "e": 1288515600000,
+                    "s": 1270375200000
+                },
+                {
+                    "e": 1319965200000,
+                    "s": 1301824800000
+                },
+                {
+                    "e": 1351414800000,
+                    "s": 1333274400000
+                },
+                {
+                    "e": 1382864400000,
+                    "s": 1365328800000
+                },
+                {
+                    "e": 1414314000000,
+                    "s": 1396778400000
+                }
+            ]
+        },
+        {
+            "name": "America/Sao_Paulo",
+            "rules": [
+                {
+                    "e": 1203213600000,
+                    "s": 1224385200000
+                },
+                {
+                    "e": 1234663200000,
+                    "s": 1255834800000
+                },
+                {
+                    "e": 1266717600000,
+                    "s": 1287284400000
+                },
+                {
+                    "e": 1298167200000,
+                    "s": 1318734000000
+                },
+                {
+                    "e": 1330221600000,
+                    "s": 1350788400000
+                },
+                {
+                    "e": 1361066400000,
+                    "s": 1382238000000
+                },
+                {
+                    "e": 1392516000000,
+                    "s": 1413687600000
+                }
+            ]
+        },
+        {
+            "name": "Asia/Amman",
+            "rules": [
+                {
+                    "e": 1225404000000,
+                    "s": 1206655200000
+                },
+                {
+                    "e": 1256853600000,
+                    "s": 1238104800000
+                },
+                {
+                    "e": 1288303200000,
+                    "s": 1269554400000
+                },
+                {
+                    "e": 1319752800000,
+                    "s": 1301608800000
+                },
+                false,
+                false,
+                {
+                    "e": 1414706400000,
+                    "s": 1395957600000
+                }
+            ]
+        },
+        {
+            "name": "Asia/Damascus",
+            "rules": [
+                {
+                    "e": 1225486800000,
+                    "s": 1207260000000
+                },
+                {
+                    "e": 1256850000000,
+                    "s": 1238104800000
+                },
+                {
+                    "e": 1288299600000,
+                    "s": 1270159200000
+                },
+                {
+                    "e": 1319749200000,
+                    "s": 1301608800000
+                },
+                {
+                    "e": 1351198800000,
+                    "s": 1333058400000
+                },
+                {
+                    "e": 1382648400000,
+                    "s": 1364508000000
+                },
+                {
+                    "e": 1414702800000,
+                    "s": 1395957600000
+                }
+            ]
+        },
+        {
+            "name": "Asia/Dubai",
+            "rules": [
+                false,
+                false,
+                false,
+                false,
+                false,
+                false,
+                false
+            ]
+        },
+        {
+            "name": "Asia/Gaza",
+            "rules": [
+                {
+                    "e": 1219957200000,
+                    "s": 1206655200000
+                },
+                {
+                    "e": 1252015200000,
+                    "s": 1238104800000
+                },
+                {
+                    "e": 1281474000000,
+                    "s": 1269640860000
+                },
+                {
+                    "e": 1312146000000,
+                    "s": 1301608860000
+                },
+                {
+                    "e": 1348178400000,
+                    "s": 1333058400000
+                },
+                {
+                    "e": 1380229200000,
+                    "s": 1364508000000
+                },
+                {
+                    "e": 1411678800000,
+                    "s": 1395957600000
+                }
+            ]
+        },
+        {
+            "name": "Asia/Irkutsk",
+            "rules": [
+                {
+                    "e": 1224957600000,
+                    "s": 1206813600000
+                },
+                {
+                    "e": 1256407200000,
+                    "s": 1238263200000
+                },
+                {
+                    "e": 1288461600000,
+                    "s": 1269712800000
+                },
+                false,
+                false,
+                false,
+                false
+            ]
+        },
+        {
+            "name": "Asia/Jerusalem",
+            "rules": [
+                {
+                    "e": 1223161200000,
+                    "s": 1206662400000
+                },
+                {
+                    "e": 1254006000000,
+                    "s": 1238112000000
+                },
+                {
+                    "e": 1284246000000,
+                    "s": 1269561600000
+                },
+                {
+                    "e": 1317510000000,
+                    "s": 1301616000000
+                },
+                {
+                    "e": 1348354800000,
+                    "s": 1333065600000
+                },
+                {
+                    "e": 1382828400000,
+                    "s": 1364515200000
+                },
+                {
+                    "e": 1414278000000,
+                    "s": 1395964800000
+                }
+            ]
+        },
+        {
+            "name": "Asia/Kamchatka",
+            "rules": [
+                {
+                    "e": 1224943200000,
+                    "s": 1206799200000
+                },
+                {
+                    "e": 1256392800000,
+                    "s": 1238248800000
+                },
+                {
+                    "e": 1288450800000,
+                    "s": 1269698400000
+                },
+                false,
+                false,
+                false,
+                false
+            ]
+        },
+        {
+            "name": "Asia/Krasnoyarsk",
+            "rules": [
+                {
+                    "e": 1224961200000,
+                    "s": 1206817200000
+                },
+                {
+                    "e": 1256410800000,
+                    "s": 1238266800000
+                },
+                {
+                    "e": 1288465200000,
+                    "s": 1269716400000
+                },
+                false,
+                false,
+                false,
+                false
+            ]
+        },
+        {
+            "name": "Asia/Omsk",
+            "rules": [
+                {
+                    "e": 1224964800000,
+                    "s": 1206820800000
+                },
+                {
+                    "e": 1256414400000,
+                    "s": 1238270400000
+                },
+                {
+                    "e": 1288468800000,
+                    "s": 1269720000000
+                },
+                false,
+                false,
+                false,
+                false
+            ]
+        },
+        {
+            "name": "Asia/Vladivostok",
+            "rules": [
+                {
+                    "e": 1224950400000,
+                    "s": 1206806400000
+                },
+                {
+                    "e": 1256400000000,
+                    "s": 1238256000000
+                },
+                {
+                    "e": 1288454400000,
+                    "s": 1269705600000
+                },
+                false,
+                false,
+                false,
+                false
+            ]
+        },
+        {
+            "name": "Asia/Yakutsk",
+            "rules": [
+                {
+                    "e": 1224954000000,
+                    "s": 1206810000000
+                },
+                {
+                    "e": 1256403600000,
+                    "s": 1238259600000
+                },
+                {
+                    "e": 1288458000000,
+                    "s": 1269709200000
+                },
+                false,
+                false,
+                false,
+                false
+            ]
+        },
+        {
+            "name": "Asia/Yekaterinburg",
+            "rules": [
+                {
+                    "e": 1224968400000,
+                    "s": 1206824400000
+                },
+                {
+                    "e": 1256418000000,
+                    "s": 1238274000000
+                },
+                {
+                    "e": 1288472400000,
+                    "s": 1269723600000
+                },
+                false,
+                false,
+                false,
+                false
+            ]
+        },
+        {
+            "name": "Asia/Yerevan",
+            "rules": [
+                {
+                    "e": 1224972000000,
+                    "s": 1206828000000
+                },
+                {
+                    "e": 1256421600000,
+                    "s": 1238277600000
+                },
+                {
+                    "e": 1288476000000,
+                    "s": 1269727200000
+                },
+                {
+                    "e": 1319925600000,
+                    "s": 1301176800000
+                },
+                false,
+                false,
+                false
+            ]
+        },
+        {
+            "name": "Australia/Lord_Howe",
+            "rules": [
+                {
+                    "e": 1207407600000,
+                    "s": 1223134200000
+                },
+                {
+                    "e": 1238857200000,
+                    "s": 1254583800000
+                },
+                {
+                    "e": 1270306800000,
+                    "s": 1286033400000
+                },
+                {
+                    "e": 1301756400000,
+                    "s": 1317483000000
+                },
+                {
+                    "e": 1333206000000,
+                    "s": 1349537400000
+                },
+                {
+                    "e": 1365260400000,
+                    "s": 1380987000000
+                },
+                {
+                    "e": 1396710000000,
+                    "s": 1412436600000
+                }
+            ]
+        },
+        {
+            "name": "Australia/Perth",
+            "rules": [
+                {
+                    "e": 1206813600000,
+                    "s": 1224957600000
+                },
+                false,
+                false,
+                false,
+                false,
+                false,
+                false
+            ]
+        },
+        {
+            "name": "Europe/Helsinki",
+            "rules": [
+                {
+                    "e": 1224982800000,
+                    "s": 1206838800000
+                },
+                {
+                    "e": 1256432400000,
+                    "s": 1238288400000
+                },
+                {
+                    "e": 1288486800000,
+                    "s": 1269738000000
+                },
+                {
+                    "e": 1319936400000,
+                    "s": 1301187600000
+                },
+                {
+                    "e": 1351386000000,
+                    "s": 1332637200000
+                },
+                {
+                    "e": 1382835600000,
+                    "s": 1364691600000
+                },
+                {
+                    "e": 1414285200000,
+                    "s": 1396141200000
+                }
+            ]
+        },
+        {
+            "name": "Europe/Minsk",
+            "rules": [
+                {
+                    "e": 1224979200000,
+                    "s": 1206835200000
+                },
+                {
+                    "e": 1256428800000,
+                    "s": 1238284800000
+                },
+                {
+                    "e": 1288483200000,
+                    "s": 1269734400000
+                },
+                false,
+                false,
+                false,
+                false
+            ]
+        },
+        {
+            "name": "Europe/Moscow",
+            "rules": [
+                {
+                    "e": 1224975600000,
+                    "s": 1206831600000
+                },
+                {
+                    "e": 1256425200000,
+                    "s": 1238281200000
+                },
+                {
+                    "e": 1288479600000,
+                    "s": 1269730800000
+                },
+                false,
+                false,
+                false,
+                false
+            ]
+        },
+        {
+            "name": "Pacific/Apia",
+            "rules": [
+                false,
+                false,
+                false,
+                {
+                    "e": 1301752800000,
+                    "s": 1316872800000
+                },
+                {
+                    "e": 1333202400000,
+                    "s": 1348927200000
+                },
+                {
+                    "e": 1365256800000,
+                    "s": 1380376800000
+                },
+                {
+                    "e": 1396706400000,
+                    "s": 1411826400000
+                }
+            ]
+        },
+        {
+            "name": "Pacific/Fiji",
+            "rules": [
+                false,
+                false,
+                {
+                    "e": 1269698400000,
+                    "s": 1287842400000
+                },
+                {
+                    "e": 1327154400000,
+                    "s": 1319292000000
+                },
+                {
+                    "e": 1358604000000,
+                    "s": 1350741600000
+                },
+                {
+                    "e": 1390050000000,
+                    "s": 1382796000000
+                },
+                {
+                    "e": 1421503200000,
+                    "s": 1414850400000
+                }
+            ]
+        }
+    ]
+};    if (typeof exports !== 'undefined') {
+        exports.jstz = jstz;
+    } else {
+        root.jstz = jstz;
+    }
+})(this);
diff --git a/lang/en/lang.php b/lang/en/lang.php
--- a/lang/en/lang.php
+++ b/lang/en/lang.php
@@ -1,39 +1,40 @@
 <?php
 $lang['created_by_davcal'] = 'Created by DAVCal for DokuWiki';
 $lang['unknown_error'] = 'Unknown Error';
 $lang['event_added'] = 'Event added';
 $lang['event_edited'] = 'Event edited';
 $lang['event_deleted'] = 'Event deleted';
 $lang['no_permission'] = 'You don\'t have permission to modify this calendar';
 $lang['settings'] = 'Settings/Sync';
 $lang['settings_saved'] = 'Settings saved successfully';
 $lang['error_saving'] = 'Error saving settings.';
 $lang['local_time'] = 'Local time (Browser based)';
 $lang['js']['create_new_event'] = 'Create new Event';
 $lang['js']['cancel'] = 'Cancel';
 $lang['js']['create'] = 'Create';
 $lang['js']['save'] = 'Save';
 $lang['js']['settings'] = 'Settings';
 $lang['js']['edit'] = 'Edit';
 $lang['js']['delete'] = 'Delete';
 $lang['js']['edit_event'] = 'Edit Event';
 $lang['js']['allday'] = 'All Day Event';
 $lang['js']['title'] = 'Title';
 $lang['js']['from'] = 'From';
 $lang['js']['to'] = 'To';
 $lang['js']['yes'] = 'Yes';
 $lang['js']['confirmation'] = 'Confirmation';
 $lang['js']['ok'] = 'OK';
 $lang['js']['info'] = 'Info';
 $lang['js']['really_delete_this_event'] = 'Really delete this event?';
 $lang['js']['timezone'] = 'Timezone';
 $lang['js']['weeknumbers'] = 'Week Numbers';
 $lang['js']['use_lang_tz'] = 'Use Timezone from language setting';
 $lang['js']['only_workweek'] = 'Show only Work Week';
 $lang['js']['sync_url'] = 'DAVCal URL';
 $lang['js']['error_retrieving_data'] = 'There was an error retrieving data from the calendar server.';
 $lang['js']['start_date_invalid'] = 'Start date/time is invalid.';
 $lang['js']['end_date_invalid'] = 'End date/time is invalid.';
 $lang['js']['end_date_before_start_date'] = 'End date/time is before start date/time.';
 $lang['js']['end_date_is_same_as_start_date'] = 'End date/time is equal to start date/time.';
 $lang['js']['description'] = 'Description';
+$lang['js']['private_url'] = 'Private URL';
diff --git a/script.js b/script.js
--- a/script.js
+++ b/script.js
@@ -1,545 +1,550 @@
 /* DOKUWIKI:include_once fullcalendar-2.4.0/moment.js */
 /* DOKUWIKI:include_once fullcalendar-2.4.0/fullcalendar.js */
 /* DOKUWIKI:include_once fullcalendar-2.4.0/lang/de.js */
 /* DOKUWIKI:include_once fullcalendar-2.4.0/lang/en.js */
 /* DOKUWIKI:include_once datetimepicker-2.4.5/jquery.datetimepicker.js */
 /* DOKUWIKI:include_once jstz.js */
 
 jQuery(function() {
     // Redefine functions for using moment.js with datetimepicker
     
     Date.parseDate = function( input, format ){
       return moment(input,format).toDate();
     };
     Date.prototype.dateFormat = function( format ){
       return moment(this).format(format);
     };
     
     // Attach to event links
     
     jQuery('div.fullCalendarSettings a').each(function() {
         var $link = jQuery(this);
         var href = $link.attr('href');
         if (!href) return;
 
         $link.click(
             function(e) {
                 dw_davcal__modals.showSettingsDialog();
                 e.preventDefault();
                 return '';
             }
         );
         }
     );
     
     var postArray = { };
     jQuery.post(
         DOKU_BASE + 'lib/exe/ajax.php',
         {
             call: 'plugin_davcal',
             id: JSINFO.id,
             action: 'getSettings',
             params: postArray
         },
         function(data)
         {
             var result = data['result'];
             if(result === true)
             {
                 dw_davcal__modals.settings = data['settings'];
                 var wknum = false;
                 var tz = false;
                 var we = true;
                 var detectedTz = jstz.determine().name();
                 dw_davcal__modals.detectedTz = detectedTz;
                 if(data['settings']['weeknumbers'] == 1)
                     wknum = true;
                 if(data['settings']['timezone'] !== '')
                     tz = data['settings']['timezone'];
                 if(data['settings']['workweek'] == 1)
                     we = false;
                 // Initialize the davcal popup
                 var res = jQuery('#fullCalendar').fullCalendar({
                     dayClick: function(date, jsEvent, view) {
                         dw_davcal__modals.showEditEventDialog(date, false);
                     },
                     eventClick: function(calEvent, jsEvent, view) {
                         dw_davcal__modals.showEditEventDialog(calEvent, true);
                     },
                     events: {
                         url: DOKU_BASE + 'lib/exe/ajax.php',
                         type: 'POST',
                         data: {
                             call: 'plugin_davcal',
                             action: 'getEvents',
                             id: JSINFO.id
                         },
                         error: function() {
                             dw_davcal__modals.msg = LANG.plugins.davcal['error_retrieving_data'];
                             dw_davcal__modals.showDialog(false);
                         }
                     },
                     header: {
                         left: 'title',
                         center: 'today prev,next',
                         right: 'month,agendaWeek,agendaDay'
                     },
                     lang: JSINFO.plugin.davcal['language'],
                     weekNumbers: wknum,
                     timezone: tz,
                     weekends: we,
                 });
             }
         }
     );    
 });
 
 var dw_davcal__modals = {
     $editEventDialog: null,
     $dialog: null,
     $settingsDialog: null,
     msg: null,
     completeCb: null,
     action: null,
     uid: null,
     settings: null,
     detectedTz: null,
     
     showSettingsDialog : function() {
         if(dw_davcal__modals.$settingsDialog)
             return;
 
         var dialogButtons = {};
         dialogButtons[LANG.plugins.davcal['save']] = function() {
             var postArray = { };
             jQuery("input[class=dw_davcal__settings], select[class=dw_davcal__settings]").each(function() {
               if(jQuery(this).attr('type') == 'checkbox')
               {
                   postArray[jQuery(this).prop('name')] = jQuery(this).prop('checked') ? 1 : 0;
               }
               else
               {
                   postArray[jQuery(this).prop('name')] = jQuery(this).val();
               }
             });
             jQuery('#dw_davcal__ajaxsettings').html('<img src="'+DOKU_BASE+'lib/images/throbber.gif" alt="" width="16" height="16" />');
             jQuery.post(
                 DOKU_BASE + 'lib/exe/ajax.php',
                 {
                     call: 'plugin_davcal',
                     id: JSINFO.id,
                     action: 'saveSettings',
                     params: postArray
                 },
                 function(data)
                 {
                     var result = data['result'];
                     var html = data['html'];
                     jQuery('#dw_davcal__ajaxsettings').html(html);
                     if(result === true)
                     {
                         location.reload();
                     }
                 }
             );
         };
         dialogButtons[LANG.plugins.davcal['cancel']] = function () {
             dw_davcal__modals.hideSettingsDialog();
         };
         
         dw_davcal__modals.$settingsDialog = jQuery(document.createElement('div'))
        .dialog({
            autoOpen: false,
            draggable: true,
            title: LANG.plugins.davcal['settings'],
            resizable: true,         
            buttons: dialogButtons,
        })
        .html(
             '<div><table>' +
             //'<tr><td>' + LANG.plugins.davcal['use_lang_tz'] + '</td><td><input type="checkbox" name="use_lang_tz" id="dw_davcal__settings_use_lang_tz" class="dw_davcal__settings"></td></tr>' + 
             '<tr><td>' + LANG.plugins.davcal['timezone'] + '</td><td><select name="timezone" id="dw_davcal__settings_timezone" class="dw_davcal__settings"></select></td></tr>' +
             '<tr><td>' + LANG.plugins.davcal['weeknumbers'] + '</td><td><input type="checkbox" name="weeknumbers" id="dw_davcal__settings_weeknumbers" class="dw_davcal__settings"></td></tr>' +
             '<tr><td>' + LANG.plugins.davcal['only_workweek'] + '</td><td><input type="checkbox" name="workweek" id="dw_davcal__settings_workweek" class="dw_davcal__settings"></td></tr>' +
             '<tr><td>' + LANG.plugins.davcal['sync_url'] + '</td><td><input type="text" name="syncurl" readonly="readonly" id="dw_davcal__settings_syncurl" class="dw_davcal__text" value="' + dw_davcal__modals.settings['syncurl'] + '"></td></tr>' + 
+            '<tr><td>' + LANG.plugins.davcal['private_url'] + '</td><td><input type="text" name="privateurl" readonly="readonly" id="dw_davcal__settings_privateurl" class="dw_davcal__text" value="' + dw_davcal__modals.settings['privateurl'] + '"></td></tr>' +
             '</table>' +
             '</div>' +
             '<div id="dw_davcal__ajaxsettings"></div>'
             )
        .parent()
        .attr('id','dw_davcal__settings')
        .show()
        .appendTo('.dokuwiki:first');
        
        jQuery('#dw_davcal__settings').position({
            my: "center",
            at: "center",
            of: window
        });
        
        jQuery('#dw_davcal__settings_syncurl').on('click', function() {
            jQuery(this).select();
        });
        
+       jQuery('#dw_davcal__settings_privateurl').on('click', function() {
+           jQuery(this).select(); 
+       });
+       
            // attach event handlers
         jQuery('#dw_davcal__settings .ui-dialog-titlebar-close').click(function(){
           dw_davcal__modals.hideSettingsDialog();
         });
         
         var $tzdropdown = jQuery('#dw_davcal__settings_timezone');
         jQuery('#fullCalendarTimezoneList option').each(function() {
             jQuery('<option />', {value: jQuery(this).val(), 
                     text: jQuery(this).text()}).appendTo($tzdropdown);
         });
         
         if(dw_davcal__modals.settings)
         {
             if(dw_davcal__modals.settings['timezone'] !== '')
                 jQuery('#dw_davcal__settings_timezone').val(dw_davcal__modals.settings['timezone']);
             if(dw_davcal__modals.settings['weeknumbers'] == 1)
                 jQuery('#dw_davcal__settings_weeknumbers').prop('checked', true);
             else
                 jQuery('#dw_davcal__settings_weeknumbers').prop('checked', false);
                 
             if(dw_davcal__modals.settings['workweek'] == 1)
                 jQuery('#dw_davcal__settings_workweek').prop('checked', true);
             else
                 jQuery('#dw_davcal__settings_workweek').prop('checked', false);
         }        
     },
     
     checkEvents : function() {
         var allDay = jQuery('#dw_davcal__allday_edit').prop('checked');
         var startDate = moment(jQuery('#dw_davcal__eventfrom_edit').val(), 'YYYY-MM-DD');
         var endDate = moment(jQuery('#dw_davcal__eventto_edit').val(), 'YYYY-MM-DD');
         if(!allDay)
         {
             var startTime = moment.duration(jQuery('#dw_davcal__eventfromtime_edit').val());
             var endTime = moment.duration(jQuery('#dw_davcal__eventtotime_edit').val());
             startDate.add(startTime);
             endDate.add(endTime);
         }
         if(!startDate.isValid())
         {
             dw_davcal__modals.msg = LANG.plugins.davcal['start_date_invalid'];
             dw_davcal__modals.showDialog(false);
             return false;
         }
         if(!endDate.isValid())
         {
             dw_davcal__modals.msg = LANG.plugins.davcal['end_date_invalid'];
             dw_davcal__modals.showDialog(false);
             return false;
         }
         if(endDate.isBefore(startDate))
         {
             dw_davcal__modals.msg = LANG.plugins.davcal['end_date_before_start_date'];
             dw_davcal__modals.showDialog(false);
             return false;
         }
         if(!allDay && endDate.isSame(startDate))
         {
             dw_davcal__modals.msg = LANG.plugins.davcal['end_date_is_same_as_start_date'];
             dw_davcal__modals.showDialog(false);
             return false;
         }
         return true;
     },
     
     showEditEventDialog : function(event, edit) {
         if(dw_davcal__modals.$editEventDialog)
             return;
          
         var title = '';   
         var dialogButtons = {};
         var calEvent = [];
         if(edit)
         {
             calEvent = event;
             title = LANG.plugins.davcal['edit_event'];
             dialogButtons[LANG.plugins.davcal['edit']] = function() {
                 if(!dw_davcal__modals.checkEvents())
                   return;
                 var postArray = { };
                 jQuery("input.dw_davcal__editevent, textarea.dw_davcal__editevent").each(function() {
                   if(jQuery(this).attr('type') == 'checkbox')
                   {
                       postArray[jQuery(this).prop('name')] = jQuery(this).prop('checked') ? 1 : 0;
                   }
                   else
                   {
                       postArray[jQuery(this).prop('name')] = jQuery(this).val();
                   }
                 });
                 jQuery('#dw_davcal__ajaxedit').html('<img src="'+DOKU_BASE+'lib/images/throbber.gif" alt="" width="16" height="16" />');
                 jQuery.post(
                     DOKU_BASE + 'lib/exe/ajax.php',
                     {
                         call: 'plugin_davcal',
                         id: JSINFO.id,
                         action: 'editEvent',
                         params: postArray
                     },
                     function(data)
                     {
                         var result = data['result'];
                         var html = data['html'];
                         jQuery('#dw_davcal__ajaxedit').html(html);
                         if(result === true)
                         {
                             jQuery('#fullCalendar').fullCalendar('refetchEvents');
                             dw_davcal__modals.hideEditEventDialog();
                         }
                     }
                 );
             };
             dialogButtons[LANG.plugins.davcal['delete']] = function() {
                 dw_davcal__modals.action = 'deleteEvent';
                 dw_davcal__modals.msg = LANG.plugins.davcal['really_delete_this_event'];
                 dw_davcal__modals.completeCb = function(data) {
                     if(data.result == false)
                     {
                         dw_davcal__modals.msg = data.errmsg;
                         dw_davcal__modals.showDialog(false);
                     }
                     else
                     {
                         jQuery('#fullCalendar').fullCalendar('refetchEvents');
                         dw_davcal__modals.hideEditEventDialog();
                     }
                 };
                 dw_davcal__modals.showDialog(true);
             };
         }
         else
         {
             calEvent.start = event;
             calEvent.end = moment(event);
             calEvent.start.hour(12);
             calEvent.start.minute(0);
             calEvent.end.hour(13);
             calEvent.end.minute(0);
             calEvent.allDay = false;
             calEvent.title = '';
             calEvent.description = '';
             calEvent.id = '0';
             title = LANG.plugins.davcal['create_new_event'];
             dialogButtons[LANG.plugins.davcal['create']] = function() {
                 if(!dw_davcal__modals.checkEvents())
                   return;
 
                 var postArray = { };
                 jQuery("input.dw_davcal__editevent, textarea.dw_davcal__editevent").each(function() {
                   if(jQuery(this).attr('type') == 'checkbox')
                   {
                       postArray[jQuery(this).prop('name')] = jQuery(this).prop('checked') ? 1 : 0;
                   }
                   else
                   {
                       postArray[jQuery(this).prop('name')] = jQuery(this).val();
                   }
                 });
                 jQuery('#dw_davcal__ajaxedit').html('<img src="'+DOKU_BASE+'lib/images/throbber.gif" alt="" width="16" height="16" />');
                 jQuery.post(
                     DOKU_BASE + 'lib/exe/ajax.php',
                     {
                         call: 'plugin_davcal',
                         id: JSINFO.id,
                         action: 'newEvent',
                         params: postArray
                     },
                     function(data)
                     {
                         var result = data['result'];
                         var html = data['html'];
                         jQuery('#dw_davcal__ajaxedit').html(html);
                         if(result === true)
                         {
                             jQuery('#fullCalendar').fullCalendar('refetchEvents');
                             dw_davcal__modals.hideEditEventDialog();
                         }
                     }
                 );
             };
         }
         dialogButtons[LANG.plugins.davcal['cancel']] = function() {
             dw_davcal__modals.hideEditEventDialog();
         };
         dw_davcal__modals.uid = calEvent.id;
         dw_davcal__modals.$editEventDialog = jQuery(document.createElement('div'))
        .dialog({
            autoOpen: false,
            draggable: true,
            title: title,
            resizable: true,         
            buttons: dialogButtons,
        })
        .html(
             '<div><table><tr><td>' + LANG.plugins.davcal['title'] + '</td><td><input type="text" id="dw_davcal__eventname_edit" name="eventname" class="dw_davcal__editevent"></td></tr>' +
             '<tr><td>' + LANG.plugins.davcal['description'] + '</td><td><textarea name="eventdescription" id="dw_davcal__eventdescription_edit" class="dw_davcal__editevent dw_davcal__text"></textarea></td></tr>' +
             '<tr><td>' + LANG.plugins.davcal['from'] + '</td><td><input type="text" name="eventfrom" id="dw_davcal__eventfrom_edit" class="dw_davcal__editevent dw_davcal__date"><input type="text" name="eventfromtime" id="dw_davcal__eventfromtime_edit" class="dw_davcal__editevent dw_davcal__time"></td></tr>' +
             '<tr><td>' + LANG.plugins.davcal['to'] + '</td><td><input type="text" name="eventto" id="dw_davcal__eventto_edit" class="dw_davcal__editevent dw_davcal__date"><input type="text" name="eventtotime" id="dw_davcal__eventtotime_edit" class="dw_davcal__editevent dw_davcal__time"></td></tr>' +
             '<tr><td colspan="2"><input type="checkbox" name="allday" id="dw_davcal__allday_edit" class="dw_davcal__editevent">' + LANG.plugins.davcal['allday'] + '</td></tr>' +
             '</table>' +
             '<input type="hidden" name="uid" id="dw_davcal__uid_edit" class="dw_davcal__editevent">' +
             '<input type="hidden" name="detectedtz" id="dw_davcal__tz_edit" class="dw_davcal__editevent">' +
             '</div>' +
             '<div id="dw_davcal__ajaxedit"></div>'
             )
        .parent()
        .attr('id','dw_davcal__edit')
        .show()
        .appendTo('.dokuwiki:first');
        
        jQuery('#dw_davcal__edit').position({
            my: "center",
            at: "center",
            of: window
        });
        jQuery('#dw_davcal__tz_edit').val(dw_davcal__modals.detectedTz);
        jQuery('#dw_davcal__uid_edit').val(calEvent.id);
        jQuery('#dw_davcal__eventname_edit').val(calEvent.title);
        jQuery('#dw_davcal__eventfrom_edit').val(calEvent.start.format('YYYY-MM-DD'));
        jQuery('#dw_davcal__eventfromtime_edit').val(calEvent.start.format('HH:mm'));
        jQuery('#dw_davcal__eventdescription_edit').val(calEvent.description);
        if(calEvent.allDay && (calEvent.end === null))
        {
            jQuery('#dw_davcal__eventto_edit').val(calEvent.start.format('YYYY-MM-DD'));
            jQuery('#dw_davcal__eventtotime_edit').val(calEvent.start.format('HH:mm'));
        }
        else if(calEvent.allDay)
        {
            endEvent = moment(calEvent.end);
            endEvent.subtract(1, 'days');
            jQuery('#dw_davcal__eventto_edit').val(endEvent.format('YYYY-MM-DD'));
            jQuery('#dw_davcal__eventotime_edit').val(endEvent.format('HH:mm'));
        }
        else
        {
            jQuery('#dw_davcal__eventto_edit').val(calEvent.end.format('YYYY-MM-DD'));
            jQuery('#dw_davcal__eventtotime_edit').val(calEvent.end.format('HH:mm'));
        }
        jQuery('#dw_davcal__allday_edit').prop('checked', calEvent.allDay);
        
            // attach event handlers
         jQuery('#dw_davcal__edit .ui-dialog-titlebar-close').click(function(){
           dw_davcal__modals.hideEditEventDialog();
         });
         jQuery('#dw_davcal__eventfrom_edit').datetimepicker({format:'YYYY-MM-DD',
                                                       formatDate:'YYYY-MM-DD',
                                                       datepicker: true,
                                                       timepicker: false,
                                                       });
         jQuery('#dw_davcal__eventfromtime_edit').datetimepicker({format:'HH:mm',
                                                       formatTime:'HH:mm',
                                                       datepicker: false,
                                                       timepicker: true,
                                                       step: 15});
         jQuery('#dw_davcal__eventto_edit').datetimepicker({format:'YYYY-MM-DD',
                                                       formatDate:'YYYY-MM-DD',
                                                       datepicker: true,
                                                       timepicker: false,
                                                       });
         jQuery('#dw_davcal__eventtotime_edit').datetimepicker({format:'HH:mm',
                                                       formatTime:'HH:mm',
                                                       datepicker: false,
                                                       timepicker: true,
                                                       step:15});
         jQuery('#dw_davcal__allday_edit').change(function() {
             if(jQuery(this).is(":checked"))
             {
                 jQuery('#dw_davcal__eventfromtime_edit').prop('readonly', true);
                 jQuery('#dw_davcal__eventtotime_edit').prop('readonly', true);
             }
             else
             {
                 jQuery('#dw_davcal__eventfromtime_edit').prop('readonly', false);
                 jQuery('#dw_davcal__eventtotime_edit').prop('readonly', false);
             }
         });
         jQuery('#dw_davcal__allday_edit').change();
     },
     
     showDialog : function(confirm)
     {
         if(dw_davcal__modals.$confirmDialog)
             return;
         var dialogButtons = {};
         var title = '';
         if(confirm)
         {
             title = LANG.plugins.davcal['confirmation'];
             dialogButtons[LANG.plugins.davcal['yes']] =  function() {
                             jQuery.post(
                                 DOKU_BASE + 'lib/exe/ajax.php',
                                 {
                                     call: 'plugin_davcal',
                                     id: JSINFO.id,
                                     action: dw_davcal__modals.action,
                                     params: {
                                         uid: dw_davcal__modals.uid
                                     }
                                 },
                                 function(data)
                                 {
                                     dw_davcal__modals.completeCb(data);
                                 }
                             );
                             dw_davcal__modals.hideDialog();
                     };
             dialogButtons[LANG.plugins.tagrevisions['cancel']] = function() {
                             dw_davcal__modals.hideDialog();
                     };
         }
         else
         {
             title = LANG.plugins.davcal['info'];
             dialogButtons[LANG.plugins.davcal['ok']] = function() {
                  dw_davcal__modals.hideDialog();
             };
         }
         dw_davcal__modals.$dialog = jQuery(document.createElement('div'))
             .dialog({
                 autoOpen: false,
                 draggable: true,
                 title: title,
                 resizable: true,
                 buttons: dialogButtons,
             })
             .html(
                 '<div>' + dw_davcal__modals.msg + '</div>'
             )
             .parent()
             .attr('id','dw_davcal__confirm')
             .show()
             .appendTo('.dokuwiki:first');
    
             jQuery('#dw_davcal__confirm').position({
                 my: "center",
                 at: "center",
                 of: window
             });
                  // attach event handlers
             jQuery('#dw_davcal__confirm .ui-dialog-titlebar-close').click(function(){
                 dw_davcal__modals.hideDialog();
             });
     },
     
     hideEditEventDialog : function() {
         dw_davcal__modals.$editEventDialog.empty();
         dw_davcal__modals.$editEventDialog.remove();
         dw_davcal__modals.$editEventDialog = null;
     },
     
     hideDialog: function() {
         dw_davcal__modals.$dialog.empty();
         dw_davcal__modals.$dialog.remove();
         dw_davcal__modals.$dialog = null;
     },
     
     hideSettingsDialog: function() {
         dw_davcal__modals.$settingsDialog.empty();
         dw_davcal__modals.$settingsDialog.remove();
         dw_davcal__modals.$settingsDialog = null;
     }
 };