rem: var msgHdr = messenger.messageServiceFromURI(msgURI).messageURIToMsgHdr(msgURI); 
add: var msgHdr = messenger.msgHdrFromURI(msgURI); 
context: function setMsgHdrPropertyAndReload(aProperty, aValue){  // we want to get the msg hdr for the currently selected message  // change the appropiate property on it then reload the message  var msgURI = GetLoadedMessage();  if (msgURI && !(/type=application\/x-message-display/.test(msgURI)))  {    var msgHdr = messenger.messageServiceFromURI(msgURI).messageURIToMsgHdr(msgURI);    if (msgHdr)    {      msgHdr.setUint32Property(aProperty, aValue);      MsgReload();    }  }}
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/90d39b5ad3d6cd80a60d14b918774aba39d2fda1/mailWindowOverlay.js/clean/mailnews/base/resources/content/mailWindowOverlay.js