rem: return  window._content.document.characterSet; 
add: return  window.content.document.characterSet; 
context: function getCharsetforSave(aDocument){  if (aDocument)    return aDocument.characterSet;  if (document.commandDispatcher.focusedWindow)    return document.commandDispatcher.focusedWindow.document.characterSet;  return  window._content.document.characterSet;  return false;}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/77a06be2bffbc9148f7bc66369aa20d6220af374/contentAreaUtils.js/buggy/toolkit/content/contentAreaUtils.js