rem: loadFolderView((gCurrentFolderView + 1) % kNumFolderViews); 
add: var offset = aCycleForward ? 1 : kNumFolderViews - 1; loadFolderView((gCurrentFolderView + offset) % kNumFolderViews); 
context: function CycleFolderView(){  // pass the call onto loadFolderView...  loadFolderView((gCurrentFolderView + 1) % kNumFolderViews);}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/dfd8a49b91a228c36244cad9a8e24e78610f0f8c/msgMail3PaneWindow.js/buggy/mail/base/content/msgMail3PaneWindow.js