errback: function(res){  this._check(); if(!(res instanceof Error)){ res = new Error(res); } this._resback(res); }, 
},errback:function(res){ this._check(); if(!(res instanceof Error)){ res=new Error(res); } this._resback(res); },addBoth:function(cb,cbfn){ 
  errback: function(res){    // Begin the callback sequence with an error result.    this._check();    if(!(res instanceof Error)){      res = new Error(res);    }    this._resback(res);  },
6315	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/6315/90939f35f46f873d9b1f5c5f818ecf012711dc71/dojo.js/buggy/src/main/resources/org/apache/struts2/static/dojo/dojo.js