return this; 
return String(this); 
  scan: function(pattern, iterator) {    this.gsub(pattern, iterator);    return this;  },
4999	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/4999/0c67d2a1c175fa312f232b827bd1c26b95eac0e1/prototype.js/clean/wp-includes/js/prototype.js