rem: var contentFrames = window._content.frames; 
add: var contentFrames = _content.frames; 
context: function isDocumentFrame(aFocusedWindow){  var contentFrames = window._content.frames;  if (contentFrames.length) {    for (var i = 0; i < contentFrames.length; i++ ) {      if (aFocusedWindow == contentFrames[i])        return true;    }  }  return false;}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/f28378fc95b52edbfb29c89faf2ee1177996c268/navigator.js/clean/xpfe/browser/resources/content/navigator.js