In any action for libel or slander, for good cause shown upon ex parte written application, the court may order that the time to respond to the complaint is 20 days after the service of summons on the defendant. The application shall be supported by an affidavit stating facts showing, among other things, that the alleged defamatory matter has been continuously published and that there is a reasonable likelihood that the publication will continue. The order shall direct the clerk to endorse the summons to show that the time to respond has been shortened pursuant to this section. A copy of the application, affidavit, and order shall be served with the summons. (CCP 460.5)