function Menicko(Id)
{
  var oAll = document.all;
  if (dhtml) {
    var idObr = "img_"+Id;
    var idKat = "div_"+Id;
    if (document.getElementById(idKat).className == 'off') {
      document.getElementById(idKat).className = 'on';
    } else {
      document.getElementById(idKat).className = 'off';
    } 
  }
}

function Rozbal(Index)
{
  var obj;
  
  obj = document.getElementById('a_'+Index);
  if (obj == null)
    // nejedna se o list ale o vyssi uzel
    obj = document.getElementById('div_'+Index);
  else {
    // jedna se o list - musim vyskocit ze dvou divu
    obj = obj.parentNode;
    if (obj != null)
      obj = obj.parentNode;
  }
}

// urceni prohlizece
if (document.all) document.getElementById = document.all;
var dhtml = (document.getElementById || document.all) && navigator.userAgent.indexOf('Opera') == -1 ? true : false;