function book()
{
    url = 'http://www.newyorkml.cz/';
    title = 'NewYork barcaffé';

    if (window.sidebar)
	window.sidebar.addPanel(title, url, "");
    else if (window.external)
	window.external.AddFavorite(url, title);
    else if(window.opera && window.print)
	return true;

    return false;
}