/* from http://developer.mozilla.org/en/Adding_search_engines_from_web_pages */
function installSearchEngine() {
 if (window.external && ("AddSearchProvider" in window.external)) {
   // Firefox 2 and IE 7, OpenSearch
   window.external.AddSearchProvider("http://green-galaxy.de/xt/opensearch.php");
 } else if (window.sidebar && ("addSearchEngine" in window.sidebar)) {
   // Firefox <= 1.5, Sherlock
   window.sidebar.addSearchEngine("http://green-galaxy.de/xt/opensearch.php?output=firebird.src",
                                  "http://green-galaxy.de/xt/template/lars/favicon.png",
                                  "Green-Galaxy Produktfinder", "");
 } else {
   // No search engine support (IE 6, Opera, etc).
   alert("Ihr Browser unterstuetzt dieses Suchplugin leider nicht!");
 }
}