function addToFav() {
    if (window.sidebar) {
        window.sidebar.addPanel(document.title, location.href, '');
    } 
    else {
        if( window.external ) { 
    	    window.external.AddFavorite(location.href, document.title); 
	}
	else if(window.opera && window.print) {
	    return true; 
	}
    }
}