* response from helperUG
 */
switch ($action) {
    case "get_skin_css":
        $skin = UniteFunctionsUG::getVal($data, "skin");
        $filepath = GlobalsUG::$path_media_ug . "themes/video/skin-{$skin}.css";
        $filepath_modified = GlobalsUG::$path_media_ug . "themes/video/skin-{$skin}-modified.css";
        UniteFunctionsUG::validateFilepath($filepath);
        //if exists modified version - get the modified
        if (file_exists($filepath_modified)) {
            $filepath = $filepath_modified;
        }
        $content = file_get_contents($filepath);
        $data = array();
        $data["content"] = $content;
        $relativePath = HelperUG::pathToRelative($filepath);
        $data["filepath"] = $relativePath;
        HelperUG::ajaxResponseData($data);
        break;
    case "update_skin_css":
        $skin = UniteFunctionsUG::getVal($data, "skin");
        $filepath_modified = GlobalsUG::$path_media_ug . "themes/video/skin-{$skin}-modified.css";
        $content = UniteFunctionsUG::getVal($data, "css");
        UniteFunctionsUG::writeFile($content, $filepath_modified);
        HelperUG::ajaxResponseSuccess("Content Updated");
        break;
    case "get_original_skin_css":
        $skin = UniteFunctionsUG::getVal($data, "skin");
        $filepath = GlobalsUG::$path_media_ug . "themes/video/skin-{$skin}.css";
        $filepath_modified = GlobalsUG::$path_media_ug . "themes/video/skin-{$skin}-modified.css";
        if (file_exists($filepath_modified) == false) {