function installSearchEngine() {
  if (window.external && ("AddSearchProvider" in window.external)) {
    // Firefox 2 and IE 7, OpenSearch
    window.external.AddSearchProvider("http://www.mapmyglobe.com/misc/opensearch.xml");
  } else if (window.sidebar && ("addSearchEngine" in window.sidebar)) {
    // Firefox <= 1.5, Sherlock
    window.sidebar.addSearchEngine("http://www.mapmyglobe.com/misc/MapMyGlobe.src",
                              "http://www.mapmyglobe.com/images/searchbox16.png",
                              "MapMyGlobe Plugin", "");
  } else {
    // No search engine support (IE 6, Opera, etc).
    alert("No search engine support");
  }
}