function Validate_login(name) {
    errfound = false;
    if (!ValidLength(name.pz_login.value,1)) {
        error(name.pz_login, "Enter your login");
    }
    if (!ValidLength(name.pz_password.value,1)) {
        error(name.pz_password, "Enter your password");
    }
    return !errfound;
}