gistfile1.txt

  readAttribute: function(key) {
  	if (!this._cachedAttributes) this._cachedAttributes = {} ;
  	var ret = this._cachedAttributes[key] ;
  	if (ret === undefined) {
			var attr = this._attributes ;
			ret = (attr) ? attr[key] : undefined ;
			if (ret !== undefined) {
				var recordType = this._getRecordType(key+'Type') ;
				ret = this._propertyFromAttribute(ret, recordType) ;
			}
			this._cachedAttributes[key] = ret ;
  	}
  	return (ret === undefined) ? null : ret;
  },