Form.getElements(this.element).each(this.registerCallback.bind(this)); 
Form.getElements(this.element).each(this.registerCallback, this); 
  registerFormCallbacks: function() {    Form.getElements(this.element).each(this.registerCallback.bind(this));  },
4053	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/4053/b8ec17fb9a9503b3599947de79d66a077d483799/prototype.js/clean/lib/prototype.js