rem: return commonDialogService.Confirm(window, titleMsg, dialogMsg); 
add: return commonDialogService.Confirm(window, titleMsg, dialogMsg); 
context: function ConfirmUnsubscribe(folder){    if (!gMessengerBundle)        gMessengerBundle = document.getElementById("bundle_messenger");    var titleMsg = gMessengerBundle.getString("confirmUnsubscribeTitle");    var dialogMsg = gMessengerBundle.getFormattedString("confirmUnsubscribeText",                                        [folder.name], 1);    var commonDialogService = nsJSComponentManager.getService("@mozilla.org/appshell/commonDialogs;1",                                                                    "nsICommonDialogs");    return commonDialogService.Confirm(window, titleMsg, dialogMsg);    }
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/eaa6754a0a946375badf1165b3e4af3999e4b03c/mailWindowOverlay.js/clean/mailnews/base/resources/content/mailWindowOverlay.js