rem: for (var i = 0; i < this.length; i++) 
add: for (var i = 0, length = this.length; i < length; i++) 
context:   indexOf: function(object) {    for (var i = 0; i < this.length; i++)      if (this[i] == object) return i;    return -1;  },
meta: 4707	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4707/50c3492c4c3c825dbd3401e134a19ed46799c456/prototype.js/clean/www/resources/prototype/prototype.js