rem: var focusedTop = Components.lookupMethod(aFocusedWindow, 'top') .call(aFocusedWindow); 
add: var focusedTop = new XPCNativeWrapper(aFocusedWindow, 'top').top; 
context: function isContentFrame(aFocusedWindow){  if (!aFocusedWindow)    return false;  var focusedTop = Components.lookupMethod(aFocusedWindow, 'top')                             .call(aFocusedWindow);  return (focusedTop == window.content);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/80f70418146d6876277d1ae2a22a859fd015a927/contentAreaUtils.js/buggy/suite/common/contentAreaUtils.js