var XMLHTTPREQUEST_STATE_UNINITIALISED = 0
var XMLHTTPREQUEST_STATE_OPEN = 1
var XMLHTTPREQUEST_STATE_SENT = 2
var XMLHTTPREQUEST_STATE_RECEIVING = 3
var XMLHTTPREQUEST_STATE_LOADED = 4


function createXMLHttpRequest() {
	if (window.XMLHttpRequest) {
		return new XMLHttpRequest();
	} else if (window.ActiveXObject) {
		return new ActiveXObject("Microsoft.XMLHTTP");
	} else {
		return null;
	}
}


function createDocument() {
	if (document.implementation && document.implementation.createDocument) {
		return document.implementation.createDocument(null, null, null);
	} else if (window.ActiveXObject) {
		return new ActiveXObject("MSXML2.DOMDocument");
	} else {
		return null;
	}
}