Microsoft Office 2003 Navigation Pane
If you like to employ the latest user interface styles in your applications, you will definitely want to use this newly created style. It supports all the features introduced in MS Outlook including:

•	Changing the number of visible groups by dragging the groups border;
•	Accessing invisible groups via the Overflow Panel displayed at the bottom;
•	Allowing end users to customize the control using the built-in menu.