return eval('(' + this.header('X-JSON') + ')'); } catch (e) {} 
var json = this.getHeader('X-JSON'); return json ? eval('(' + json + ')') : null; } catch (e) { return null } 
  evalJSON: function() {    try {      return eval('(' + this.header('X-JSON') + ')');    } catch (e) {}  },
6445	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/6445/81ea0800bc8ad92d491743716cd489cad7333723/prototype.js/buggy/vendor/rails/actionpack/lib/action_view/helpers/javascripts/prototype.js