function ajaxRequestment(id, oldal, div, file){
	var ajaxRequest;  // ajax változó indítása
		
	try{
		// Opera 8.0+, Firefox, Safari
		ajaxRequest = new XMLHttpRequest();
	} catch (e){
		// explorer
		try{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e){
				// hiba
				alert("Meghalt a böngésző!");
				return false;
			}
		}
	}
	

	// adatok fogadása
	ajaxRequest.onreadystatechange = function(){
		if(ajaxRequest.readyState == 1){
			document.getElementById(div).style.display = 'none';
			document.getElementById(div + '_load').style.display = 'block';
		}
		if(ajaxRequest.readyState == 4){			
			document.getElementById(div + '_load').style.display = 'none';
			document.getElementById(div).style.display = "block";
			
			var ajaxDisplay = document.getElementById(div);
			ajaxDisplay.innerHTML = ajaxRequest.responseText;
		}
	}
		
	ajaxRequest.open("GET", "modules/" + file, true);
	ajaxRequest.send(null);
	
	//// POST ////
	/*
	var poststr = "age=" + encodeURI( document.getElementById("age").value ) + "&sex=" + encodeURI( document.getElementById("sex").value );
  makePOSTRequest('post.php', poststr);*/
	}