return this.map(function(pair) { return pair.map(encodeURIComponent).join('='); }).join('&'); 
return this.select(function(value) { return !values.include(value); }); 
    return this.map(function(pair) {      return pair.map(encodeURIComponent).join('=');    }).join('&');
6445	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/6445/81ea0800bc8ad92d491743716cd489cad7333723/prototype.js/clean/vendor/rails/railties/html/javascripts/prototype.js