rem: if((serverType == "nntp")) 
add: var menuItem = document.getElementById("menu_getnextnmsg"); if((serverType == "nntp")) { var newsServer = server.QueryInterface(Components.interfaces.nsINntpIncomingServer); var menuValue = Bundle.formatStringFromName("getNextNMessages", [ newsServer.maxArticles], 1); menuItem.setAttribute("value",menuValue); menuItem.setAttribute("hidden","false"); 
context: function IsGetNextNMessagesEnabled(){	var selectedFolders = GetSelectedMsgFolders();    var numFolders = selectedFolders.length;    if(numFolders !=1)        return false;    var folder = selectedFolders[0];    if (!folder)        return false;       var server = folder.server;    var serverType = server.type;       if((serverType == "nntp"))        return true;    else return false;}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/e0f6660848f04d312af69ad8e7e86ab3eb817b98/mailWindowOverlay.js/clean/mailnews/base/resources/content/mailWindowOverlay.js