function bookmark(){
  var url  =  window.location.href;
  var title = document.title;
  bookmarksite(title.replace("'","\\'"), url);
}
function bookmarksite(title,url){
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);
}