return !values.include(value); 
return value != null; 
    return this.select(function(value) {      return !values.include(value);    });
6462	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/6462/328e05b227c420e11178ba4eb2eb0e10862b193f/prototype.js/clean/wp-includes/js/prototype.js