function addFavorite(obj, opts){     var _t, _u;         if(typeof opts != 'object'){                _t = document.title;                _u = location.href;                   }else{                  _t = opts.title || document.title;                 _u = opts.url || location.href;                     }try{          window.external.addFavorite(_u, _t);             }catch(e){                     if(window.sidebar){                  obj.href = _u;                  obj.title = _t;                 obj.rel = 'sidebar';                         }else{                  alert('抱歉，您所使用的浏览器无法完成此操作。 请使用 Ctrl + D 将本页加入收藏夹！');                         }                             }}