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: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/0545d3f114e89dd60d62918be774dce26056e457/contentAreaUtils.js/clean/toolkit/content/contentAreaUtils.js