rem: return $A(children).inject([], function(elements, child) { if (child.className.match(new RegExp("(^|\\s)" + className + "(\\s|$)"))) elements.push(child); return elements; }); 
add: function() {return new XMLHttpRequest()}, 
context:   return $A(children).inject([], function(elements, child) {    if (child.className.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))      elements.push(child);    return elements;  });
meta: 2801	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/2801/7e143d2df37946a5416f0f043869478087652eb6/prototype.js/clean/examples/testcases/prototype.js