microAjax fix

microAjax.js

function microAjax(url, callbackFunction) {
	var o = {};
	o.bindFunction = function (caller, object) {
		return function () {
			return caller.apply(object, [object]);
		};
	};
	o.stateChange = function (object) {
		if (o.request.readyState == 4)
			o.callbackFunction(o.request.responseText);
	};
	o.getRequest = function () {
		if (window.ActiveXObject)
			return new ActiveXObject('Microsoft.XMLHTTP');
		else if (window.XMLHttpRequest)
			return new XMLHttpRequest();
		return false;
	};
	o.postBody = (arguments[2] || "");
	o.callbackFunction = callbackFunction;
	o.url = url;
	o.request = o.getRequest();
	if (o.request) {
		var req = o.request;
		req.onreadystatechange = o.bindFunction(o.stateChange, o);
		if (o.postBody !== "") {
			req.open("POST", url, true);
			req.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
			req.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
			req.setRequestHeader('Connection', 'close');
		} else {
			req.open("GET", url, true);
		}

		req.send(o.postBody);
	}
	return o;
}