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<TYPE>EX-99.2
<SEQUENCE>4
<FILENAME>a2070746zex-99_2.txt
<DESCRIPTION>EXHIBIT 99.2
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                                              EXHIBIT 2
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<S>                 <C>
                    IDENTIFICATION AND CLASSIFICATION OF SUBSIDIARY(S) WHICH ACQUIRED SECURITIES
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                    Salomon Brothers Asset Management Inc, 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: February 13, 2002


                                          SALOMON BROTHERS HOLDING COMPANY INC


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


                                          SALOMON SMITH BARNEY HOLDINGS INC.


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


                                          CITIGROUP INC.


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

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