function getHTTPObject(){
	if (window.ActiveXObject) {		
//		alert('microsoft');
		var httpObject = null;
		try {
			httpObject = new ActiveXObject("Microsoft.XMLHTTP");
		} 
		catch (e) {
			try {
				httpObject = new ActiveXObject("Msxml2.XMLHTTP");				
			} 
			catch (E) {
				httpObject = null;
			}
		}
		if (httpObject==null) 
			alert('microsoft null');

		return httpObject;
	}
	else 
		if (window.XMLHttpRequest) {
//			alert('mozilla');
			return new XMLHttpRequest();
		}
		else {
			alert("Your browser does not support AJAX.");
			return null;
		}
}

function naptarvaltas(ev, ho, nap){
   var _ev = ev;
	var _ho = ho;
	var _nap = nap;
	var div = document.getElementById('naptarfo');
	var belsodiv = document.getElementById('naptarbelso');

	var httpObject = getHTTPObject();
	if (httpObject!=null)
	if (httpObject != null) {		
		httpObject.onreadystatechange = function setOutput(){
			if (httpObject.readyState == 4) {
				if (httpObject.status == 200) {
					if (httpObject.responseText.substring(0, 5) == 'Hiba:') {
						alert(httpObject.responseText);									
					}
					else if (belsodiv != null) {
						div.removeChild(belsodiv);
						div.innerHTML = httpObject.responseText;
					}
					else 
						alert("Nem található a div:"+div.id);
				}
			}
		};
		httpObject.open("GET", "enaptar/naptar.php?ev=" + _ev+"&ho=" + _ho+"&nap=" + _nap, true);
		httpObject.setRequestHeader("Content-Type", "text/plain;charset=UTF-8");
		httpObject.send(null);
	}
};