public function checkUrlAction() {

        if (!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest') {

            $posts = $this->registry->posts;

            $url = urldecode($posts["adres"]);
            $headers = get_headers($url, 1);

            if (strpos($headers[0], '200')) {

                $contentTypeArr = (isset($headers["Content-Type"])) ? explode(";", $headers["Content-Type"]) : explode(";", $headers["Content-type"]);

                if (strtolower($contentTypeArr[0]) == "text/html") {

                    $content = file_get_contents($url);

                    if (preg_match_all("#\<img[^\>]+?\>#i", $content, $matches) > 0) {

                        $imgArr = array();

                        foreach ($matches[0] as $k => &$val) {

                            $src = preg_replace("#\<img\s+.*?src\=(\'|\")(.+?)\\1[^>]+?\>#i", "$2", $val);

                            $img = @getimagesize($src);

                            if (!empty($img) and in_array($img["mime"], array("image/jpg", "image/jpeg", "image/png", "image/gif"))) {


                                $o_width = $img[0];
                                $o_height = $img[1];
                                $c_width = 200;
                                $c_height = 200;
                                $ratio = round($o_width / $o_height);

                                if ($o_width > $o_height && $o_width >= $c_width) {

                                    $c_height = round($c_width / $ratio);

                                    if (preg_match("#width\=(\'|\").+?\\1#", $val)) {
                                        $val = preg_replace("#width\=(\'|\").+?\\1#i", "width='" . $c_width . "'", $val);
                                    } else {
                                        $valArr = explode(" ", $val);
                                        $count = count($valArr);
                                        $arrSliced = array_slice($valArr, 0, $count - 1);
                                        array_push($arrSliced, "width='$c_width'", end($valArr));


                                        $val = implode(" ", array_values($arrSliced));
                                    }
                                    if (preg_match("#height\=(\'|\").+?\\1#", $val)) {
                                        $val = preg_replace("#height\=(\'|\").+?\\1#i", "height='" . $c_height . "'", $val);
                                    } else {
                                        $valArr = explode(" ", $val);
                                        $count = count($valArr);
                                        $arrSliced = array_slice($valArr, 0, $count - 1);
                                        array_push($arrSliced, "height='$c_height'", end($valArr));


                                        $val = implode(" ", array_values($arrSliced));
                                    }

                                    $imgArr[] = $val;
                                } else if ($o_width < $o_height && $o_height >= $c_height) {

                                    $c_width = round($c_height * $ratio);

                                    if (preg_match("#width\=(\'|\").+?\\1#", $val)) {
                                        $val = preg_replace("#width\=(\'|\").+?\\1#i", "width='" . $c_width . "'", $val);
                                    } else {
                                        $valArr = explode(" ", $val);
                                        $count = count($valArr);
                                        $arrSliced = array_slice($valArr, 0, $count - 1);
                                        array_push($arrSliced, "width='$c_width'", end($valArr));


                                        $val = implode(" ", array_values($arrSliced));
                                    }
                                    if (preg_match("#height\=(\'|\").+?\\1#", $val)) {
                                        $val = preg_replace("#height\=(\'|\").+?\\1#i", "height='" . $c_height . "'", $val);
                                    } else {
                                        $valArr = explode(" ", $val);
                                        $count = count($valArr);
                                        $arrSliced = array_slice($valArr, 0, $count - 1);
                                        array_push($arrSliced, "height='$c_height'", end($valArr));


                                        $val = implode(" ", array_values($arrSliced));
                                    }

                                    $imgArr[] = $val;
                                } else {
                                    continue;
                                }
                            } else {
                                continue;
                            }
                        }



                        $content = $imgArr;
                    } else {

                        $content = NULL;
                    }

                    print json_encode(array("error" => 0, "content" => $content, "typ" => "text/html"));
                    exit;
                } else if (strtolower($contentTypeArr[0]) == "image/jpeg" || strtolower($contentTypeArr[0]) == "image/png") {

                    $content = $url;
                    print json_encode(array("error" => 0, "content" => $content, "typ" => strtolower($headers["Content-type"])));
                    exit;
                }
            } else {
                print json_encode(array("error" => 1));
            }
        } else {
            print json_encode(array("error" => 1));
            exit;
        }
    }