function createXMLHttpRequest(cbFunc){
	var XMLhttpObject = null;
	try{
		XMLhttpObject = new XMLHttpRequest();
	}catch(e){
		try{
			XMLhttpObject = new ActiveXObject("Msxml2.XMLHTTP");
		}catch(e){
			try{
				XMLhttpObject = new ActiveXObject("Microsoft.XMLHTTP");
		}catch(e){
	return null;
		}
	}
}
if (XMLhttpObject) XMLhttpObject.onreadystatechange = cbFunc;
return XMLhttpObject;
}