return array.concat(value && value.constructor == Array ? 
return array.concat(Object.isArray(value) ? 
  flatten: function() {    return this.inject([], function(array, value) {      return array.concat(value && value.constructor == Array ?        value.flatten() : [value]);    });  },
4999	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/4999/0c67d2a1c175fa312f232b827bd1c26b95eac0e1/prototype.js/clean/wp-includes/js/prototype.js