rem: return messenger.messageServiceFromURI(messageUri).messageURIToMsgHdr(messageUri); 
add: return messenger.msgHdrFromURI(messageUri); 
context: function GetMsgHdrFromUri(messageUri){  return messenger.messageServiceFromURI(messageUri).messageURIToMsgHdr(messageUri);}
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/90d39b5ad3d6cd80a60d14b918774aba39d2fda1/messageWindow.js/clean/mailnews/base/resources/content/messageWindow.js