[AS2] SiteLock Flash

//You can site lock your flash with this little code snippet![AS2]
//FREE TO USE THE SNIPPET! NO NEED TO GIVE CREDIT!
urls_allowed = ["www.mysite.com","www.sponsor.com"];//THE ARRAY OF THE VALID SITES! USE ONLY DOMAIN AS THE EXAMPLE SHOWS!
sitelock(urls_allowed);//RUN THE FUNCTION ONCE!
function sitelock(urls_allowed, style) {
    lock = true;
    domain_parts = _url.split("://");
    real_domain = domain_parts[1].split("/");
    domain.text = real_domain[0];
    for (x in urls_allowed) {
        if (urls_allowed[x] == real_domain[0]) {
            lock = false;
        }
    }
    if (lock) {//IF THE SITE WAS INVALID:
        gotoAndStop(2);
        //OR WHATEVER!
    } else {//IF THE SITE WAS VALID:
        gotoAndStop(3);
        //OR WHATEVER!
    }
}