rem: function SetupCompactMenuItem(targetFolder, numSelected) 
add: function SetupCompactMenuItem(folderResource, numSelected) 
context: function SetupCompactMenuItem(targetFolder, numSelected){    var canCompact = (targetFolder.getAttribute('CanCompact') == "true");  ShowMenuItem("folderPaneContext-compact", (numSelected <=1) && canCompact);  var folder = GetMsgFolderFromNode(targetFolder);  EnableMenuItem("folderPaneContext-compact", folder.isCommandEnabled("cmd_compactFolder"));  if(canCompact)  {    SetMenuItemLabel("folderPaneContext-compact", gMessengerBundle.getString("compactFolder"));  }}
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/1e0e99191d9d4f4f04fb4061b0ba91f347b8986f/mailContextMenus.js/clean/mailnews/base/resources/content/mailContextMenus.js