return this.inject([], function(array, value) { return array.include(value) ? array : array.concat([value]); 
return this.select(function(value) { return !values.include(value); 
    return this.inject([], function(array, value) {      return array.include(value) ? array : array.concat([value]);    });
4999	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/4999/e47dfd7529c730bdf42c17407d64892450c0dbee/prototype.js/clean/wp-includes/js/scriptaculous/prototype.js