function User()
 {
     parent::GroupItem("User");
     $this->zoomlevel = null;
     $this->lat = null;
     $this->lon = null;
     $this->isadmin = false;
 }
 function Group()
 {
     parent::GroupItem("Group");
     $this->haschildren = false;
     $this->protection = null;
     $this->zoomlevel = null;
     $this->lat = null;
     $this->lon = null;
 }
 function File()
 {
     parent::GroupItem("File");
     $this->itemname = "empty file";
     $this->path = "";
     $this->filename = "";
     //$this->description = "";
     $this->fullfilename = "";
     $this->state = "";
 }
 function Poi()
 {
     parent::GroupItem("Poi");
     //$this->poitype = "Poi";
     $this->description = "";
 }