runOnload = function() {
  // MOdul za vreme
  try {
    if (WeatherManager) {
      var delay = 30000;	
      var maxDelay = 600000;
      var oWeatherManager = new WeatherManager("index.php?znfModule=cvz&znfAction=vreme", delay, maxDelay);
      oWeatherManager.timer = setInterval(function() {oWeatherManager.requestData()}, delay);
    }
  } catch(e) {}

  // Modul za asinhrono nalaganje ucbenikov
  try {
    if (Ucbenik && (document.getElementById('ucbenik') != null)) {
      var ucbenik = new Ucbenik();
      var select = document.getElementById('ucbenik');
      if (select.addEventListener)
        select.addEventListener("change", ucbenik.nalozi, false);
      else if (select.attachEvent) 
        select.attachEvent("onchange", ucbenik.nalozi)
      else
        select.onload = ucbenik.nalozi;
    } 
  } catch(e) {}
}

if (window.addEventListener)
  window.addEventListener("load", runOnload, false);
else if (window.attachEvent) 
  window.attachEvent("onload", runOnload)
else
  window.onload = runOnload;