function ajaxinit() {
    if (window.XMLHttpRequest) {
        return new XMLHttpRequest();
    }
    // IE
    else if (window.ActiveXObject) {
        return new ActiveXObject("Microsoft.XMLHTTP");
    }
}

function getsubcats(id, name) {
    var ajax = ajaxinit();

    ajax.open('GET', "subcat.asp?catid=" + id + "&name=" + name, true);
    ajax.onreadystatechange = function() {
        if (ajax.readyState == 4) {
            document.getElementById("subcatdiv").innerHTML = ajax.responseText;
        }
    }
    ajax.send(null);

}