function ajax2() {	var ajaxData = {		type: arguments[0].type || "GET",		url: arguments[0].url || "",		async: arguments[0].async || "true",		data: arguments[0].data || null,		dataType: arguments[0].dataType || "text",		contentType: arguments[0].contentType || "application/x-www-form-urlencoded",		beforeSend: arguments[0].beforeSend || function () { },		success: arguments[0].success || function () { },		error: arguments[0].error || function () { }	}	ajaxData.beforeSend()	var xhr = createxmlHttpRequest();	xhr.responseType = ajaxData.dataType;	xhr.open(ajaxData.type, ajaxData.url, ajaxData.async);	xhr.setRequestHeader("Content-Type", ajaxData.contentType);	xhr.send(convertData(ajaxData.data));	xhr.onreadystatechange = function () {		if (xhr.readyState == 4) {			if (xhr.status == 200) {				ajaxData.success(xhr.response)			} else {				ajaxData.error()			}		}	}}function createxmlHttpRequest() {	if (window.ActiveXObject) {		return new ActiveXObject("Microsoft.XMLHTTP");	} else if (window.XMLHttpRequest) {		return new XMLHttpRequest();	}}function convertData(data) {	if (typeof data === 'object') {		var convertResult = "";		for (var c in data) {			convertResult += c + "=" + data[c] + "&";		}		convertResult = convertResult.substring(0, convertResult.length - 1)		return convertResult;	} else {		return data;	}}