JOINT FILING AGREEMENT The undersigned hereby agree to the joint filing of the Schedule 13G to which this Agreement is attached. Dated: January 26, 2005 ARTISAN INVESTMENT CORPORATION for itself and as general partner of ARTISAN PARTNERS LIMITED...

                                                                       EXHIBIT 1

                             JOINT FILING AGREEMENT

     The undersigned hereby agree to the joint filing of the Schedule 13G to
which this Agreement is attached.

Dated: January 26, 2005

                             ARTISAN INVESTMENT CORPORATION
                             for itself and as general partner of
                             ARTISAN PARTNERS LIMITED PARTNERSHIP


                             By: ▇▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇*
                                 -----------------------------------------------


                             ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇


                             ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇*
                             ---------------------------------------------------


                             ▇▇▇▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇


                             ▇▇▇▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇*
                             ---------------------------------------------------


                             *By: /s/ ▇▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇
                                  ----------------------------------------------
                                  ▇▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇
                                  Chief Financial Officer of Artisan Investment
                                  Corporation
                                  Attorney-in-Fact for ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇
                                  Attorney-in-Fact for ▇▇▇▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇

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