function bookmark(url, title){
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);
} 
}