var http_request = false;
if (!(navigator.appName=="Microsoft Internet Explorer")) errormsg=document.getElementById("errormsg");
    function makeRequest(url) {

        http_request = false;

        if (window.XMLHttpRequest) { // Mozilla, Safari,...
            http_request = new XMLHttpRequest();
            if (http_request.overrideMimeType) {
                http_request.overrideMimeType('text/xml');
            }
        } else if (window.ActiveXObject) { // IE
            try {
                http_request = new ActiveXObject("Msxml2.XMLHTTP");
            } catch (e) {
                try {
                    http_request = new ActiveXObject("Microsoft.XMLHTTP");
                } catch (e) {}
            }
        }

        if (!http_request) {
            errormsg.innerhtml="Sorry, this browser does not support xmlhttprequest.";
            return false;
        }
        http_request.onreadystatechange = displayContents;
        http_request.open('GET', url, true);
        http_request.send(null);
    }

    function displayContents() {

        if (http_request.readyState == 4) {
            if (!(http_request.status == 200)) {
			errormsg.innerHTML="錯誤 "+http_request.status+"<br /><br />本頁地址為: "+top.location+"<br />請到<a href=\"/forum\">討論區</a>回報錯誤訊息，或直接聯絡<a href=\"mailto:itlandshk@gmail.com\">本人</a>。<style>div.content {display:none;}</style>";
            }
        }

    }