return this.select(function(value) { return value != null; 
this.each(function(value, index) { if (!iterator(value, index)) results.push(value); 
    return this.select(function(value) {      return value != null;    });
6462	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/6462/0097375444aef03d8cdcdbe6705c1ea088b9b188/prototype.js/clean/wp-includes/js/scriptaculous/prototype.js