return this; 
  each: function(iterator) {    var index = 0;    try {      this._each(function(value) {        try {          iterator(value, index++);        } catch (e) {          if (e != $continue) throw e;        }      });    } catch (e) {      if (e != $break) throw e;    }  },
6445	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/6445/81ea0800bc8ad92d491743716cd489cad7333723/prototype.js/clean/vendor/rails/railties/html/javascripts/prototype.js