var XMLHttpRequestObject = createXMLHttpRequestObject();

function createXMLHttpRequestObject() {
    var XMLHttpRequestObject = false;

    try {
        XMLHttpRequestObject = new XMLHttpRequest();
    }
    catch (e) {
        var aryXmlHttp = new Array(
                               "MSXML2.XMLHTTP",
                               "Microsoft.XMLHTTP",
                               "MSXML2.XMLHTTP.6.0",
                               "MSXML2.XMLHTTP.5.0",
                               "MSXML2.XMLHTTP.4.0",
                               "MSXML2.XMLHTTP.3.0"
                               );
        for (var i = 0; i < aryXmlHttp.length && !XMLHttpRequestObject; i++) {
            try {
                XMLHttpRequestObject = new ActiveXObject(aryXmlHttp[i]);
            }
            catch (e) { }
        }
    }

    if (!XMLHttpRequestObject) {
        alert("Error: failed to create the XMLHttpRequest object.");
    }
    else {
        return XMLHttpRequestObject;
    }
}

function getData(dataSource, divID) {
    if (XMLHttpRequestObject) {
        dataSource += "&parm=" + new Date().getTime();
        var objDiv = document.getElementById(divID);
        XMLHttpRequestObject.open("GET", dataSource);
        XMLHttpRequestObject.onreadystatechange = function() {
            try {
                switch (XMLHttpRequestObject.readyState) {
                    //case 1: 
                    //objDiv.innerHTML = '<center><br><br><br><img src=images/ajax-loader.gif><br><br>Loading...</center>'; 
                    //break; 
                    //case 2: 
                    //objDiv.innerHTML = '<center><br><br><br><img src=images/ajax-loader.gif><br><br>Load complate...</center>'; 
                    //break; 
                    //case 3: 
                    //objDiv.innerHTML = '<center><br><br><br><img src=images/ajax-loader.gif><br><br>Receving...</center>'; 
                    //break; 
                    case 4:
                        if (XMLHttpRequestObject.status == 200) {
                            objDiv.innerHTML = XMLHttpRequestObject.responseText;
                        }
                        else {
                            objDiv.innerHTML = '<center><br><br><br>"Error: failed to load datas."</center>';
                        }
                        break;
                }
            }
            catch (e) { }
        }
        try {
            XMLHttpRequestObject.send(null);
        }
        catch (e) { }
    }
}

function postData(dataSource, divID) {
    if (XMLHttpRequestObject) {
        XMLHttpRequestObject.open("POST", dataSource);
        XMLHttpRequestObject.setRequestHeader("Method", "POST " + dataSource + " HTTP/1.1");
        XMLHttpRequestObject.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");

        XMLHttpRequestObject.onreadystatechange = function() {
            try {
                if (XMLHttpRequestObject.readyState == 4 &&
            XMLHttpRequestObject.status == 200) {
                    var objDiv = document.getElementById(divID);
                    objDiv.innerHTML = XMLHttpRequestObject.responseText;
                }
            }
            catch (e) { }
        }

        dataSource += "&parm=" + new Date().getTime();
        try {
            XMLHttpRequestObject.send(dataSource);
        }
        catch (e) { }
    }
}