function addSearchBar() {
        var browser=navigator.appName;
        var b_version=navigator.appVersion;
        var version=parseFloat(b_version);
        
        var isFF = /Firefox[\/\s](\d+\.\d+)/.test(navigator.userAgent);
        var ffVersion=new Number(RegExp.$1)

        if ( (browser == "Microsoft Internet Explorer" && version < 7) || (isFF && ffVersion < 2) ) {                
		alert("Your browser doesn't support the search bar plugin. Please upgrade your browser to Firefox 2.0+ or Internet Explorer 7+ to use the plugin.");
        } else {
                window.external.AddSearchProvider('http://www.sweetsearch.com/docroot/dulcinea/xslt/sweetsearch_browser_search_bar.xml');
        }
        return false;
}