function FirefoxPlugin() {
  if((typeof window.sidebar == "object") && (typeof window.sidebar.addSearchEngine == "function")){
    window.sidebar.addSearchEngine( "http://www.walkytalk.de/plugin/wtalk.src", "http://www.walkytalk.de/images/icons/wtalk_icon.png", "WalkyTalk.de Plugin", "Internet");
  }
}