function getEventSource(ev)
	{
	ev || (ev = window.event);

	var source;
	if (typeof ev.target != 'undefined') {
		source = ev.target;
	} else if (typeof ev.srcElement != 'undefined') {
		source = ev.srcElement;
	} else { return(true); }

	return source;
	}

function cancelEvent(ev)
	{
	if (ev.preventDefault)
		{
		ev.preventDefault(); ev.stopPropagation();
		}
	else
		{
		ev.cancelBubble = true; ev.returnValue = false;
		}
	}

function addEvent(obj, evType, fn) {
  if (obj.addEventListener) {
    obj.addEventListener(evType, fn, true);
    return true;
  } else if (obj.attachEvent) {
    var r = obj.attachEvent("on"+evType, fn);
    return r;
  } else {
    return false;
  }
}

function BruttoSzamol(ev)
	{
	if ($('brutto')!=undefined)
		$('brutto').value=$('rendeldb').value*nettoar*1/*.*25*/;
	if ($('areuro')!=undefined)
		$('areuro').value=$('rendeldb').value*euroar*1/*.2*/;
	}

function Start_Page()
    {
    if ($('rendeldb')!=null)
		{
		Event.observe('rendeldb','change',BruttoSzamol);
		}
    }

addEvent(window,"load",Start_Page);