How to Bookmark your page

function funAddBookMark()
{
if (window.sidebar) // firefox
{
window.sidebar.addPanel(document.title, window.location.href, "");
}
else if(window.ie)// ie
{
window.external.AddFavorite(window.location.href, document.title);
}
else
{
var msg = "Don't forget to bookmark us!\n";
msg += "Press (CTRL+D) to bookmark.";
alert(msg);
}
}

please refer
http://stackoverflow.com/questions/374487/add-to-favorites-with-javascript-in-opera