function addOpenSearch() {
 if (window.external && ("AddSearchProvider" in window.external)) {
   // Firefox 2 and IE 7, OpenSearch
   window.external.AddSearchProvider("http://www.sheetzbox.com/searchspec.xml");
 } else {
   // No search engine support (IE 6, Opera, etc).
   alert("No search engine support");
 }
}