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/e47dfd7529c730bdf42c17407d64892450c0dbee/prototype.js/clean/wp-includes/js/scriptaculous/prototype.js