rem: if (Element.hasClassName(child, className)) elements.push(child); 
add: if (child.className.match(new RegExp("(^|\\s)" + className + "(\\s|$)"))) elements.push(Element.extend(child)); 
context: document.getElementsByClassName = function(className, parentElement) {  var children = (document.body || $(parentElement)).getElementsByTagName('*');  return $A(children).inject([], function(elements, child) {    if (Element.hasClassName(child, className))      elements.push(child);    return elements;  });}
meta: 3974	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3974/af9adbf17404d887f31369756326b0109da7ae2b/prototype.js/buggy/root/static/js/prototype.js