function bookmark(w_url,w_title) {
       // Mozilla Firefox Bookmark
	   try{
       if (window.sidebar && window.sidebar.addPanel ) {
           window.sidebar.addPanel(w_title, w_url,"");
       // IE Favorite
       } else if( window.external ) {
           window.external.AddFavorite(w_url, w_title); 
       // Opera Hotlist
       } else if(window.opera && window.print) {
           var elem = document.createElement('a');
           elem.setAttribute('href',w_url);
           elem.setAttribute('title',w_title);
           elem.setAttribute('rel','sidebar');
           elem.click();
       }
	   }catch(e){
		   alert("An error ocurred. Please consider adding the bookmark manually by pressing CTRL + D.");
	   }
   }