rem: message_menuitem.setAttribute('checked',!IsThreadAndMessagePaneSplitterCollapsed()); 
add: message_menuitem.setAttribute('checked', !IsMessagePaneCollapsed()); message_menuitem.setAttribute('disabled', gAccountCentralLoaded); 
context: function view_init(){  if (!gMessengerBundle)      gMessengerBundle = document.getElementById("bundle_messenger");  var message_menuitem=document.getElementById('menu_showMessage');  if (message_menuitem)  {      var message_menuitem_hidden = message_menuitem.getAttribute("hidden");      if(message_menuitem_hidden != "true"){          message_menuitem.setAttribute('checked',!IsThreadAndMessagePaneSplitterCollapsed());      }  }  var threadColumn = document.getElementById('ThreadColumnHeader');  var thread_menuitem=document.getElementById('menu_showThreads');  if (threadColumn && thread_menuitem){      thread_menuitem.setAttribute('checked',threadColumn.getAttribute('currentView')=='threaded');  }  // Initialize the View Attachment Inline menu  var viewAttachmentInline = pref.getBoolPref("mail.inline_attachments");  document.getElementById("viewAttachmentsInlineMenuitem").setAttribute("checked", viewAttachmentInline ? "true" : "false");  document.commandDispatcher.updateCommands('create-menu-view');}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/3fe61b83ff26b6607ed4e9c03b7663db0ae16ca1/mailWindowOverlay.js/buggy/mailnews/base/resources/content/mailWindowOverlay.js