rem: var msgHdr = messenger.messageServiceFromURI(messageUri).messageURIToMsgHdr(messageUri); 
add: var msgHdr = messenger.msgHdrFromURI(messageUri); 
context: function SelectMessage(messageUri){  var msgHdr = messenger.messageServiceFromURI(messageUri).messageURIToMsgHdr(messageUri);  if (msgHdr)    gDBView.selectMsgByKey(msgHdr.messageKey);}
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/90d39b5ad3d6cd80a60d14b918774aba39d2fda1/msgMail3PaneWindow.js/buggy/mailnews/base/resources/content/msgMail3PaneWindow.js