function addBookmark( title, url )
{
    if (title == undefined)
        title = document.title;

    if (url == undefined)
        url = top.location.href;
        
    if (window.sidebar) // firefox
        window.sidebar.addPanel(title, url, '');
    else if(window.opera && window.print) // opera
    {
        var elem = document.createElement('a');
        elem.setAttribute('href',url);
        elem.setAttribute('title',title);
        elem.setAttribute('rel','sidebar');
        elem.click();
    } 
    else if(document.all) // ie
        window.external.AddFavorite(url, title);
    else if (navigator.appName=="Netscape") //Netscape
        alert( 'To bookmark this site press "Ctrl+D".' );
    else
        alert( 'Your browser doesn\'t support this feature' );
}