var http_request = false;
	var ajax_div_id = '';
	ajax_load_err = 'Wystąpił problem z zapytaniem.';
	ajax_f_onload_end = 0;

	function makeRequest(url, responseFunction) {
		http_request = false;

		if (window.XMLHttpRequest) { // Mozilla, Safari,...
			http_request = new XMLHttpRequest();
			if (http_request.overrideMimeType) {
				http_request.overrideMimeType('text/xml');
				// Przeczytaj o tym wierszu poniżej
			}
		} else if (window.ActiveXObject) { // IE
			try {
				http_request = new ActiveXObject("Msxml2.XMLHTTP");
			} catch (e) {
				try {
					http_request = new ActiveXObject("Microsoft.XMLHTTP");
				} catch (e) {}
			}
		}

		if (!http_request) {
			alert('Nie można stworzyć instancji obiektu XMLHTTP');
			return false;
		}
		if(responseFunction){
			http_request.onreadystatechange = responseFunction;
		}
		http_request.open('GET', url, true);
		http_request.send(null);

	}

	function alertContents() {

		if (http_request.readyState == 4) {
			if (http_request.status == 200) {
				alert(http_request.responseText);
			} else {
				alert(ajax_load_err);
			}
		}

	}

	function writeContents() {

		if (http_request.readyState == 4) {

			obj = document.getElementById(ajax_div_id);

			if (http_request.status == 200) {
				obj.innerHTML = http_request.responseText;
			} else {
				obj.innerHTML = ajax_load_err;
			}

			ajax_f_onload_end();
		}

	}

	function AJAX_WriteDiv(url, get, div_id, load_err, f_onload_end) {
		ajax_div_id = div_id;
		if(load_err){			 ajax_load_err = load_err;
		}
		ajax_f_onload_end = f_onload_end;
		makeRequest(url,writeContents);
	}