EXHIBIT 1 --------- AGREEMENT AS TO JOINT FILING OF SCHEDULE 13G -------------------------------------------- Each of the undersigned hereby affirms that it is individually eligible to use Schedule 13G, and agrees that this Schedule 13G is filed on...

                                    EXHIBIT 1
                                    ---------

                  AGREEMENT AS TO JOINT FILING OF SCHEDULE 13G
                  --------------------------------------------

Each of the undersigned hereby affirms that it is individually eligible to use
Schedule 13G, and agrees that this Schedule 13G is filed on its behalf.

Date: February 10, 2004

                      CITIGROUP FINANCIAL PRODUCTS INC.



                      By: /s/ Xxxxxx X. Xxx
                         --------------------------------------------
                         Name:  Xxxxxx X. Xxx
                         Title: Assistant Secretary



                      XXXXX XXXXXX FUND MANAGEMENT LLC



                      By: /s/ Xxxxxx X. Xxxxxx
                         --------------------------------------------
                         Name:  Xxxxxx X. Xxxxxx
                         Title: Secretary



                      CITIGROUP GLOBAL MARKETS HOLDINGS INC.



                      By: /s/ Xxxxxx X. Xxx
                         --------------------------------------------
                         Name:  Xxxxxx X. Xxx
                         Title: Assistant Secretary



                      CITIGROUP INC.



                      By: /s/ Xxxxxx X. Xxx
                         --------------------------------------------
                         Name:  Xxxxxx X. Xxx
                         Title: Assistant Secretary