static public function LocalPath($sPath, $xRoot) {

        $xResult = false;
        if (is_array($xRoot)) {
            foreach ($xRoot as $sRoot) {
                $xResult = static::LocalPath($sPath, $sRoot);
                if ($xResult) {
                    return $xResult;
                }
            }
            return $xResult;
        } else {
            $sRoot = (string)$xRoot;
        }
        if ($sPath && $sRoot) {
            $sPath = static::NormPath($sPath);
            $sRoot = static::NormPath($sRoot . '/');
            //135
            // костылим local URL
            if (substr($sPath, 0, 1) === '/')
                return substr($sPath, strlen($sRoot));
            elseif (strpos($sPath, $sRoot) === 0 || strpos($sPath . '/', $sRoot) === 0) {
                return substr($sPath, strlen($sRoot));
            }
        }
        return $xResult;
    }

    static public function ImgModSuffix($xSize = null, $sExtension = null) {

        $sResult = '';
        $nPos = strpos($xSize, 'x');
        $mPos = strpos($xSize, '-');
        if ($nPos === false) {
            $nHeight = $nWidth = intval($xSize);
        } elseif ($nPos === 0) {
            $nWidth = 0;
            $nHeight = intval(substr($xSize, 1));
        } else {
            $nWidth = intval(substr($xSize, 0, $nPos));
            $mPos ? $nHeight = intval(substr($xSize, $nPos + 1, $mPos)) : $nHeight = intval(substr($xSize, $nPos + 1));
        }
        if ($nWidth || $nHeight) {
            $sResult .= '-' . ($nWidth ? $nWidth : '') . 'x' . $nHeight;
            if (strpos($xSize, 'fit')) {
                $sResult .= '-fit';
            } else if (strpos($xSize, 'crop')) {
                $sResult .= '-crop';
            } else if (strpos($xSize, 'pad')) {
                $sResult .= '-pad';
            }
            if ($sExtension) {
                $sResult .= '.' . strtolower($sExtension);
            }
        }
        return $sResult;
    }

    public function RecalculateTopicExtra($search, $replace) {
        $upcount = 0;
        $sql = "SELECT topic_id, topic_extra FROM prefix_topic_content";
        $aRows = $this->oDb->select($sql);
        if($aRows = $this->oDb->select($sql))
        {
            foreach($aRows as $aRow)
            {
                $topic_id = $aRow['topic_id'];
                $topic_extra = str_replace($search, $replace, unserialize($aRow['topic_extra']), $rcount);
                if ($rcount > 0)
                {
                    $sql = "UPDATE prefix_topic_content SET topic_extra = '" . serialize($topic_extra) . "' WHERE topic_id = " . $topic_id;
                    $this->oDb->query($sql);
                    $upcount++;
                }
            }
        }
        return $upcount;
    }

<fieldset class="topic-fieldset alian">
-----
</fieldset>

self.xhr.open("POST", params.url);

        var boundary = SESSION_ID;
        var topic_id = $("#topic_id").val();
        if (self.xhr.sendAsBinary)
        {
            //Firefox
            self.xhr.setRequestHeader("Content-Type", "multipart/form-data, boundary="+boundary);
            self.xhr.setRequestHeader("Cache-Control", "no-cache");
            self.xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
            self.xhr.setRequestHeader("topic_id", topic_id);

            var body = "--" + boundary + "\r\n";
            body += "Content-Disposition: form-data; name='security_key'\r\n\r\n";
            body += ALTO_SECURITY_KEY + "\r\n";
            body += "--" + boundary + "\r\n";

            body += "Content-Disposition: form-data; name='"+(params.fieldName || 'file')+"'; filename='" + params.file.name + "'\r\n";
            body += "Content-Type: application/octet-stream\r\n\r\n";
            body += self.reader.result + "\r\n";
            body += "--" + boundary + "--";
            self.xhr.sendAsBinary(body);
        } else {
            // chrome (W3C spec.)
            var formData = new FormData();
            self.xhr.setRequestHeader("Cache-Control", "no-cache");
            self.xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
            formData.append((params.fieldName || 'files'), params.file);
            formData.append('security_key', ALTO_SECURITY_KEY);
            formData.append('topic_id', topic_id);
            self.xhr.send(formData);
        }

Порядок действий.

        this.getMarkitup = function() {
                return {
                        onShiftEnter:   {keepDefault:false, replaceWith:'<br />\n'},
                        onCtrlEnter:    {keepDefault:false, openWith:'\n<p>', closeWith:'</p>'},
                        onTab:                  {keepDefault:false, replaceWith:'    '},
                        markupSet:  [
------------
                                {name: ls.lang.get('panel_media'), className:'editor-media', replaceWith:'<media>[!['+ls.lang.get('panel_media_promt')+':!:http://]!]</media>' }
                        ]
                }
        };

                $sText = preg_replace(
            '/<media>(http:\/\/maps\.4x4krasnodar\.ru\/[a-zA-Z0-9_\-]+.+)<\/media>/Ui',
            ' <div style="margin: 1px; display: inline-block; vertical-align: bottom; width: 640px; height: 480px;" data-url="$1" class="bbmedia"><iframe width="640" height="480" frameborder="0" allowfullscreen="" mozallowfullscreen="" webkitallowfullscreen="" src="$1?format=iframe&amp;direct" style="vertical-align: bottom; width: 640px; height: 480px;"></iframe></div>',
            $sText);

<media>http://...</media>