$agent=" ".$HTTP_USER_AGENT;

if (strpos($agent,"DISCo Pump") ||
    strpos($agent,"Offline Explorer") ||
    strpos($agent,"Teleport") ||
    strpos($agent,"WebZIP") ||
    strpos($agent,"WebCopier") ||
    strpos($agent,"Wget") ||
    strpos($agent,"FlashGet") ||
    strpos($agent,"CIS TE") ||
    strpos($agent,"DTS Agent") ||
    strpos($agent,"WebReaper") ||
    strpos($agent,"HTTrack") ||
    strpos($agent,"Web Downloader")) {
    die("Access Denied");
    }