return eval(this.transport.responseText); 
return eval((this.transport.responseText || '').unfilterJSON()); 
  evalResponse: function() {    try {      return eval(this.transport.responseText);    } catch (e) {      this.dispatchException(e);    }  },
4999	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/4999/d6b4808d8049a47f085af95ebdc565a2742b9f0f/prototype.js/buggy/wp-includes/js/prototype.js