global $HTTP_GET_VARS, $HTTP_SERVER_VARS, $REMOTE_ADDR, $REQUEST_URI, $HTTP_HOST, $HTTP_REFERER;

        session_start();

        $myVars = $HTTP_GET_VARS ;

        if (!$myVars['user']) {
            $gif = ImageCreate(88,31);
            $bg = ImageColorAllocate($gif,0,0,0);
            $tx = ImageColorAllocate($gif,255,255,255);
            ImageFilledRectangle($gif,0,0,200,200,$bg);

            $str= "abretesesamo.com";

            ImageString($gif,0,0,12, $str,$tx);

            header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
            header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
            header("Cache-Control: no-store, no-cache, must-revalidate");
            header("Cache-Control: post-check=0, pre-check=0", false);
            header("Pragma: no-cache");
            header("content-type: image/jpeg");
            ImageJPEG($gif);
            exit();
        }

        $q= new tbl;

        $query = "insert into visitors (sesion, request_uri, domain, timestamp, ip, referer, user) values ('";
        $query .=session_id()."', '".$REQUEST_URI."', '". $HTTP_HOST."', ". time().", '". $REMOTE_ADDR."', ";
        $query .="'".$HTTP_REFERER. "', '". $myVars['user'] ."' )";
        $q->query($query);

        $now = time() - 300;

        $query = "select count(ip) from visitors where timestamp >= ".$now ." and user=".$myVars['user'];
        $query .=" and domain='". $HTTP_HOST."' group by sesion";
        $q->query($query);
        $q->next_record();

        $visitorsNow = $q->num_rows();
        $date = getdate();
        $day = $date[mday];
        $mon = $date[mon];
        $year = $date[year];

        $today = mktime(0,0,0,$mon, $day,  $year);
        $query = "select count(ip) from visitors where timestamp > ".$today." and user=".$myVars['user'];
        $query .=" and domain='". $HTTP_HOST."' group by ip";
        $q->query($query);
        $uniqueVisitors = $q->num_rows();

        $query = "select count(sesion) from visitors where user=".$myVars['user'];
        $query .=" and domain='". $HTTP_HOST."' group by sesion";
        $q->query($query);
        $totalVisitors = $q->num_rows();
        $q->free();

        $gif = ImageCreate(88,31);

        $bg = ImageColorAllocate($gif,0,0,0);
        $tx = ImageColorAllocate($gif,255,255,255);
        ImageFilledRectangle($gif,0,0,200,200,$bg);

        $str= "Ahora: ".$visitorsNow;
        $str1="Unicas: ". $uniqueVisitors;
        $str2="Totales: ".$totalVisitors;

        ImageString($gif,0,0,5, $str,$tx);
        ImageString($gif,0,0,13, $str1, $tx);
        ImageString($gif,0,0,21, $str2, $tx);


        header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
        header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
        header("Cache-Control: no-store, no-cache, must-revalidate");
        header("Cache-Control: post-check=0, pre-check=0", false);
        header("Pragma: no-cache");
        header("content-type: image/jpeg");
        ImageJPEG($gif);

        exit();