public function SiteLock(listDomains:Array<String>):Bool
{
    var find:Bool = true;
    var s:String = "";
    #if flash
        for (i in 0...listDomains.length)
        {
            s = this.loaderInfo.url;
            s = s.toLowerCase();
            if (s.indexOf("http://www." + listDomains[i]) != -1)
            {
                find = false;
                break;
            }
            if (s.indexOf("https://www." + listDomains[i]) != -1)
            {
                find = false;
                break;
            }
            if (s.indexOf("http://" + listDomains[i]) != -1)
            {
                find = false;
                break;
            }
            if (s.indexOf("https://" + listDomains[i]) != -1)
            {
                find = false;
                break;
            }
        }
    #end

    return find;
}
    --- use...
    --- if(!SiteLock( ["yourdomain1.com","yourdomain2.com","yourdomain3.com"] )) {
    // game start }else{ // lock screen } ---