/***********************************
* AJAX based communication file    *
* Developed by: Imre László [HUN]  *
* Web: http://www.q-web.hu/        *
***********************************/
var please_wait = null;
function open_url(url, target) {
 	if ( ! document.getElementById) {
  		return false;
 	}
 	if (please_wait != null) {
  		document.getElementById(target).innerHTML = please_wait;
 	}
 	if (window.ActiveXObject) {
  		alink = new ActiveXObject("Microsoft.XMLHTTP");
 	} else if (window.XMLHttpRequest) {
  		alink = new XMLHttpRequest();
 	}
 	if (alink == undefined) {
  		return false;
 	}
 	alink.onreadystatechange = function() { response(url, target); }
 	alink.open("GET", url, true);
 	alink.send(null);
}
function response(url, target) {
 	if (alink.readyState == 4) {
	 	document.getElementById(target).innerHTML = (alink.status == 200) ? alink.responseText : "Hiba a kommunikáció során. Hibakód: " + alink.status;
	}
}
function set_loading_message(msg) {
 	please_wait = msg;
}