function ajax(sPage, sData, fCallback, sType) {
	if (!sPage) return "";
	if (sPage == "") return "";
	if (!sType) sType = "GET";
	if (!sData) sData = ""
	if (fCallback) {
		$.ajax({
			url:     sPage,
			type:    sType,
			cache:   false,
			data:    sData,
			success: fCallback
		});
		return "sent";
	}
	else {
		return $.ajax({
			url:   sPage,
			type:  sType,
			cache: false,
			data:  sData,
			async: false
		}).responseText;
	}
}


function noErrors(sReturn) {
	if (String(sReturn).substr(0,6) == "Error:") return false;
	return true;
}