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                                              EXHIBIT 2
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                      IDENTIFICATION AND CLASSIFICATION OF SUBSIDIARIES WHICH ACQUIRED SECURITIES
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                           Citigroup Global Markets Inc., is a broker/dealer registered under
                                          Section 15 of the Act. (15 U.S.C. 78o)

                     Smith Barney Fund Management LLC, is 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 subsidiaries which acquired the securities
                                              filed for in this Schedule 13G.


                    Date: February 12, 2004


                                          CITIGROUP GLOBAL MARKETS 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

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