function getXMLHttpRequestObject() {
	var ajax = false;
	if (window.XMLHttpRequest)	{ // Mozilla, Safari,...
		ajax = new XMLHttpRequest();
	} 
	else if (window.ActiveXObject)	{ // IE
		try {
			ajax = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e) {
			try	{
				ajax = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e) {}
		}
	}
	return ajax;
}