//	 AJAX Engine
var objHTTP = null;

function getHTTPObject() {
	if (typeof XMLHttpRequest != "undefined") {
		return new XMLHttpRequest();
	} else if (window.ActiveXObject) {
		var arrVersions = [ "MSXML2.XMLHttp.5.0",
				"MSXML2.XMLHttp.4.0","MSXML2.XMLHttp.3.0",
				"MSXML2.XMLHttp","Microsoft.XMLHttp"
				];
		for (var i = 0; i < arrVersions.length; i++) {
			try {
				var objXmlHttp = new ActiveXObject(arrVersions[i]);
				return objXmlHttp;
			} catch (objError) {
				alert("An exception occurred in the script.");
			}
		}
	}
	throw new Error("XMLHttp object could be created.");
}

function execute(strURL) {
	if (strURL.indexOf("?") > 0)
		strURL += "&";
	else
		strURL += "?";
	var date = new Date();
	strURL += "time=" + date.toUTCString();
	document.body.style.cursor = 'wait';
	try {
		if(objHTTP && objHTTP.readyState != 0) {
			objHTTP.abort()
		}
	
		objHTTP = getHTTPObject();
		if(objHTTP) {
			objHTTP.open("GET", strURL, true);
			objHTTP.onreadystatechange = manageStateChange;
			objHTTP.send(null);
		}
	} catch (e) {
		//alert(e);
		alert("Script error while processing your request!\nPlease select use new card and enter your credit card number.\nWe are sorry for your inconvenience.");
		//alert(e.name + ":" + e.message + ":" + e.number);
	}
}

function manageStateChange() {
	switch (objHTTP.readyState) {
		case 2, 3:
			document.body.style.cursor = 'wait';
			//displaying animated gif or something
			break;
		case 4:
			if (objHTTP.status != 200) {
				return false;
			}
			if (objHTTP.responseText) {
				eval(objHTTP.responseText);
			}
			objHTTP = null;
			break;
	}
	document.body.style.cursor = 'default';
}
// End AJAX Engine