Investor Relations
| Certificate of Incorporation | |
 | Amended and Restated Certificate of Incorporation, 5/27/1992 |
| Certificate of Amendment to Amended and Restated Certificate of Incorporation, 5/14/1998 |
| Certificate of Amendment to Amended and Restated Certificate of Incorporation, 5/25/2001 |
| Rights Agreement | |
| Rights Agreement, 5/16/2002 |
| Amendment No. 1 to Rights Agreement, 11/07/2003 |
| By-Laws | |
| By-Laws, as amended |
| Charters of the Committees of the Board of Directors | |
| Audit Committee |
| Corporate Personnel Committee |
