rem: if (!messageUri) return false; return (messageUri.substring(0,14) == "news-message:/") 
add: if (!messageUri) return false; else return (messageUri.substring(0,14) == "news-message:/"); 
context: function IsNewsMessage(messageUri){    if (!messageUri) return false;    return (messageUri.substring(0,14) == "news-message:/")}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/8534f3b7e1882bf8d577791dee102218abe54483/mailWindowOverlay.js/buggy/mailnews/base/resources/content/mailWindowOverlay.js