rem: if (msgCompose) 
add: if (gMsgCompose) 
context: function ReturnReceiptMenuSelect(){  if (msgCompose)  {    var msgCompFields = msgCompose.compFields;    if (msgCompFields)    {      if (msgCompFields.returnReceipt)      {        msgCompFields.returnReceipt = false;      }      else      {        msgCompFields.returnReceipt = true;      }    }  }}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/6d52592e83bce2a07c0c6646de9e9c15df155849/MsgComposeCommands.js/buggy/mailnews/compose/resources/content/MsgComposeCommands.js