delegateEvents : function(events) {
      if (!(events || (events = this.events))) return;
      if (_.isFunction(events)) events = events.call(this);
      $(this.el).unbind('.delegateEvents' + this.cid);
      for (var key in events) {
        var method = this[events[key]];
        if (!method) throw new Error('Event "' + events[key] + '" does not exist');
        var match = key.match(eventSplitter);
        var eventName = match[1], selector = match[2];
        method = _.bind(method, this);
        eventName += '.delegateEvents' + this.cid;
        if (selector === '') {
          $(this.el).bind(eventName, method);
        } else {
          $(this.el).delegate(selector, eventName, method);
        }
      }
    },