use WWW::Scripter;
use HTTP::Cookies;

my $cookie_jar = HTTP::Cookies->new();
$cookie_jar->set_cookie(.......);
my $wi = WWW::Scripter->new(cookie_jar => $cookie_jar);
$wi->use_plugin('Ajax');
$wi->credentials($loginUser, $loginPass);
$wi->get("http://$ip/simpleSetup.htm");
$wi->get('javascript:isValueModified');