function getRequest()
{
    var sendRequest;
    if (window.XMLHttpRequest) {
        sendRequest = new XMLHttpRequest();
    }
    else if (window.ActiveXObject) {
        try {
            sendRequest = new ActiveXObject("Microsoft.XMLHTTP");
        }
        catch(e) {
            try {
                sendRequest = new ActiveXObject("Msxml2.XMLHTTP");
            }
            catch (e) {
                alert("Could not create httpRequest");
            }
        }
    }
    return sendRequest;
}