var alertContents;
var lastElem;

function menu_reverse(id) {
	elem = document.getElementById(id);
	if (elem.style.display == 'block') {
		elem.style.display = 'none'
	} else {
		if (lastElem) {
			lastElem.style.display = 'none';
		}
		elem.style.display = 'block'
	}
	lastElem = elem;
}

function makeRequest(url) {
	http_request = false;
	if(window.XMLHttpRequest) {
		http_request = new XMLHttpRequest();
		if(http_request.overrideMimeType) {
			http_request.overrideMimeType('text/xml');
    }
	}
	else if(window.ActiveXObject) {
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch(e) {
			try {
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch(e) {
			}
		}
	}
	if (!http_request) {
		window.alert('Nie można stworzyć instancji obiektu XMLHTTP');
		return false;
	}
	http_request.onreadystatechange = alertContents;
	http_request.open('GET', url, true);
	http_request.send(null);
}

function update_address_list() {
	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			document.getElementById('address_list').innerHTML = http_request.responseText;
		} else {
			window.alert('Wystąpił problem z zapytaniem.');
		}
	}
}

function setImage(href, id) {
	document.getElementById('image').src = href + 'view150/' + id;
	document.getElementById('link').href = href + 'view/' + id;
}