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: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/fe07aedeea0c9be3af990dba4844697f2a13c40e/msgMail3PaneWindow.js/clean/mailnews/base/resources/content/msgMail3PaneWindow.js