rem: var folderTree = GetFolderTree(); var folderResource = RDF.GetResource(folderUri); var msgFolder = folderResource.QueryInterface(Components.interfaces.nsIMsgFolder); 
add: var folderTree = GetFolderTree(); var folderResource = RDF.GetResource(folderUri); var msgFolder = folderResource.QueryInterface(Components.interfaces.nsIMsgFolder); 
context: function SelectFolder(folderUri){    var folderTree = GetFolderTree();    var folderResource = RDF.GetResource(folderUri);    var msgFolder = folderResource.QueryInterface(Components.interfaces.nsIMsgFolder);    // before we can select a folder, we need to make sure it is "visible"    // in the tree.  to do that, we need to ensure that all its    // ancestors are expanded    var folderIndex = EnsureFolderIndex(folderTree.builderView, msgFolder);    ChangeSelection(folderTree, folderIndex);}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/b6bb0ecf6484efaae610e6386311832c1d7effcf/msgMail3PaneWindow.js/clean/mail/base/content/msgMail3PaneWindow.js