function getXmlHttpRequest() {
	if (window.XMLHttpRequest) {
		try {
			return new XMLHttpRequest();
		} catch (e) {
			return null;
		}
	} else if (window.ActiveXObject) {
		try {
			return new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				return new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {
				return null;
			}
		}
	} else {
		return null;
	}
}
		  		
function requestUrlAndReplaceContent(url, id) {
	var xmlHttpReq = getXmlHttpRequest();
	var elem = document.getElementById(id);
	
	if (xmlHttpReq == null) {
		return;
	}
	
	if (!elem) {
		return;
	}
	
	xmlHttpReq.open('POST', url, false);
	try {
		xmlHttpReq.send(null);
		if (xmlHttpReq.status == 200) {
			elem.innerHTML = xmlHttpReq.responseText;
		}
	} catch (e) {
		return;
	}
}