function Login(form) {
    var username = form.username.value;
    var password = form.password.value;
    var server = "xtech-ftp.com";
    if (username && password && server) {
            
window.open("ftp://" + username + ".xtech-ftp.com:" + password + "@" + server, '_blank', 'toolbar=yes,location=yes,status=yes,scrollbars=auto,copyhistory=no,menubar=no,width=' + ((screen.AvailWidth/2)-12) + ',height=' + (screen.AvailHeight-124) +',left=' + ((screen.AvailWidth/2)) + '),top=0,resizable=yes');
            }
        else {
            alert("NO BLANK FIELDS!");
            }
    }