rem: return this.map(function(value, index) { iterator(value = collections.pluck(index)); return value; }); 
add: return this.collect(function(value, index) { return {value: value, criteria: iterator(value, index)}; }).sort(function(left, right) { 
context:     return this.map(function(value, index) {      iterator(value = collections.pluck(index));      return value;    });
meta: 3991	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3991/d29159eae8749c508d01bb447868321a3ba6bbfa/prototype.js/buggy/manager/media/script/scriptaculous/prototype.js