return this.inject([], function(array, value) { return array.concat(value && value.constructor == Array ? value.flatten() : [value]); 
return this.map(function(value, index) { return iterator(collections.pluck(index)); 
    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/2007/4999/15b6168787a6a25fd1fbbc41a3a5227b899071a9/prototype.js/clean/wp-includes/js/scriptaculous/prototype.js