var ajax;

function createHttpRequest() {
	if (window.XMLHttpRequest) {
		return new XMLHttpRequest();
	} else if (window.ActiveXObject) {
		try {
			return new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				return new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {
				return null;
			}
		}
	}
}

function ajaxView(input) {
	ajax = createHttpRequest();
	ajax.onreadystatechange = showResult;
	ajax.open('GET', input+'.xml', true);
	ajax.send(null);
}

function showResult() {
	if (ajax.readyState==4 && ajax.status==200) {
		document.getElementById('display').innerHTML = ajax.responseText;
	} else {
		document.getElementById('display').innerHTML = '讀取中，請稍候……';
	}
}