function makeRequest(tag, page, block_name) {
	var 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) {
		alert('Не вышло :( Невозможно создать экземпляр класса XMLHTTP ');
		return false;
	}

	http_request.onreadystatechange = function() { alertContent(http_request, block_name); };
	http_request.open('GET', '/ajaxTags.php?task=pager&tag='+tag+'&page='+page+'&from='+block_name, true);
	http_request.send(null);
}

function alertContent(http_request, block_name) {
	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			if (http_request.responseText != '') {
				if (block_name == 'magazine_ac' || block_name == 'magazine_tr' || block_name == 'magazine_sn') {
					block_name = 'magazine';
				}
				document.getElementById(block_name).innerHTML = http_request.responseText;
				document.getElementById(block_name).style.display = 'block';
				// выставить на кнопки +page и -page
			}
		} else {
			alert('С запросом возникла проблема.');
		}
	}
	delete http_request;
}