rem: for (var i = 0; i < this.length; i++) iterator(this[i]); 
add: this.element.className.split(/\s+/).select(function(name) { return name.length > 0; })._each(iterator); 
context:   _each: function(iterator) {    for (var i = 0; i < this.length; i++)      iterator(this[i]);  },
meta: 3991	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3991/d29159eae8749c508d01bb447868321a3ba6bbfa/prototype.js/buggy/manager/media/script/scriptaculous/prototype.js