function bookmark(url, description)
{
    if (navigator.appName=='Microsoft Internet Explorer')
    {
        window.external.AddFavorite(url, description);
    }
    else if (navigator.userAgent.toLowerCase().indexOf("cs 2000") != -1)
    {
        alert("CompuServe users please hit CTRL++ or click the checkmark at the top right side of the window frame to add this page to your favorites.");
    } 
    else if (navigator.appName=='Netscape')
    {
        alert("Mozilla/Firefox/Netscape users please hit CTRL+D to bookmark this page.");
    } 
}