<!--
   function ShowHide(div,stav) {
      d = document.getElementById("" + div + "");
      if (d == null) return;
      var _stav = stav;

      if (stav == 3) {
         if (d.style.visibility == "visible") _stav = 0;
         else                                 _stav = 1;
      }

      if(_stav == 0){ d.style.visibility = "hidden";
                      d.style.display    = 'none';
      } else{         d.style.visibility = "visible";
                      d.style.display    = '';
      }
   }
//-->