rem: this.registerCallback(elements[i]); 
add: this.registerCallback(elements[i], this.trigger); 
context:   registerFormCallbacks: function() {    var elements = Form.getElements(this.element);    for (var i = 0; i < elements.length; i++)      this.registerCallback(elements[i]);  },
meta: 1811	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1811/e3bfd08cbcbffddf53de4f0f6030a794402cf532/prototype.js/buggy/railties/html/javascripts/prototype.js