function addbookmark() {

    var url = location.href;
    var title = document.title;

	if (window.sidebar) { // Mozilla Firefox Bookmark
		window.sidebar.addPanel(title, url,"");
	} else if ( window.external ) { // IE Favorite
		window.external.AddFavorite( url, title);
	} else if (window.opera && window.print) { // Opera Hotlist
        var a = document.createElement("A");
        a.rel = "sidebar";
        a.target = "_search";
        a.title = title;
        a.href = url;
        a.click();
    } else { // Unsupported
        return true;
    }
 }