rem: return  window.content.document.characterSet; return false; 
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: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/95369b9b14ae5c09bee9e76368e54c952025448a/contentAreaUtils.js/buggy/toolkit/content/contentAreaUtils.js