function createxmlhttprequest() {
    if (window.ActiveXObject) {
        xmlhttpobj = false;
        try {
            xmlhttpobj = new XMLHttpRequest;
        } catch (e) {
            try {
                xmlhttpobj = new ActiveXObject("MSXML2.XMLHTTP");
            } catch (e2) {
                try {
                    xmlhttpobj = new ActiveXObject("Microsoft.XMLHTTP");
                } catch (e3) {
                    xmlhttpobj = false;
                }
            }
        }
    } else if (window.XMLHttpRequest) {
        xmlhttpobj = new XMLHttpRequest();
    }
    return xmlhttpobj;
}