rem: return $A(children).inject([], function(elements, child) { if (child.className.match(new RegExp("(^|\\s)" + className + "(\\s|$)"))) elements.push(Element.extend(child)); return elements; }); 
add: $H(extras).each(function(pair) { headers[pair.key] = pair.value }); 
context:   return $A(children).inject([], function(elements, child) {    if (child.className.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))      elements.push(Element.extend(child));    return elements;  });
meta: 4707	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4707/50c3492c4c3c825dbd3401e134a19ed46799c456/prototype.js/clean/www/resources/prototype/prototype.js