function popup(url,width,height,name) {
    if (width == '' || width == null) width = 400;
    if (height == ''|| height == null) height = 425;
    if (name == '' || name == null) name = "details";
    var props = "toolbar=no,location=no,status=no,scrollbars=yes,resizable=yes,titlebar=no,menubar=no,width="+width+",height="+height;
    w = window.open(url, name, props);
    if (w) w.focus();
}