EXHIBIT 2
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                      IDENTIFICATION AND CLASSIFICATION OF SUBSIDIARY(S) WHICH ACQUIRED SECURITIES
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                            Salomon Smith Barney Inc., a broker or dealer registered under
                                          Section 15 of the Act. (15 U.S.C. 78o)

                          Smith Barney Fund Management LLC, an investment advisor in accordance with
                                           Section 240.13d -1(b)(1)(ii)(E)

                         Each of the undersigned hereby affirms the identification and Item 3
                               Classification of the subsidiary(s) which acquired the
                                    securities filed for in this Schedule 13G.



                    Date: January 23, 2003


                                          SALOMON SMITH BARNEY HOLDINGS INC.


                                          By: /s/ Joseph B. Wollard
                                              --------------------------------
                                              Name:  Joseph B. Wollard
                                              Title: Assistant Secretary


                                          CITIGROUP INC.


                                          By: /s/ Serena D. Moe
                                              --------------------------------
                                               Name:  Serena D. Moe
                                               Title: Assistant Secretary