function createAjax() {
	var requestAjax = false;
	try {
		requestAjax = new XMLHttpRequest();
	}
	catch (trymicrosoft) {
		try {
			requestAjax = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (othermicrosoft) {
			try {
				requestAjax = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (failed) {
				requestAjax = false;
			}  
		}
	}
	return requestAjax;
}

function createAjax1() {
	var ro
	if (window.XMLHttpRequest) {
		ro = new XMLHttpRequest()
	}
	else if (window.ActiveXObject) {
		ro = new ActiveXObject('Microsoft.XMLHTTP')
	}
	return ro;
}