Only refresh after EmptyTrash if the trash is the currently selected folder.

mailnews/base/resources/content/commandglue.js

@@ -474,4 +474,26 @@ function OpenToFolder(item, folderURI)
 		}
 	}
 	return null;
-}
+}
+
+function IsSpecialFolderSelected(folderName)
+{
+	var selectedFolder = GetThreadTreeFolder();
+	var id = selectedFolder.getAttribute('ref');
+	var folderResource = RDF.GetResource(id);
+	if(!folderResource)
+		return false;
+
+	var folderTree = GetFolderTree();
+	var db = folderTree.database;
+	var db = db.QueryInterface(Components.interfaces.nsIRDFDataSource);
+
+	var property = RDF.GetResource('http://home.netscape.com/NC-rdf#SpecialFolder');
+	var result = db.GetTarget(folderResource, property , true);
+	result = result.QueryInterface(Components.interfaces.nsIRDFLiteral);
+	if(result.Value == folderName)
+		return true;
+
+	return false;
+}
+

mailnews/base/resources/content/widgetglue.js

@@ -276,7 +276,13 @@ function MsgEmptyTrash()
             var folder;
             folder = folderList[0];
             if (folder)
+			{
                 messenger.EmptyTrash(tree.database, folder);
+				if(IsSpecialFolderSelected('Trash'))
+				{
+					RefreshThreadTreeView()
+				}
+			}
         }
     }
 }