var strPlugInsFolderDirectory = localize( "$$$/LocalizedFilenames.xml/SourceDirectoryName/id/Extras/[LOCALE]/[LOCALE]_Plug-ins/value=Plug-ins" );
var htmlFileName = app.path.toString() + "/" + strPlugInsFolderDirectory + "/Panels/Airtight/content/index.html";

File(htmlFileName).execute();