function bookmark_us(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);
else
alert('Your browser does not support this function.');
}