EX-99.1 2 a2032979zex-99_1.txt JOINT FILING AGREEMENT 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: December 11, 2000 SALOMON SMITH BARNEY INC. By: /s/ /s/ Howard M. Darmstadter -------------------------------------------- Name: Howard M. Darmstadter Title: Assistant Secretary SALOMON BROTHERS HOLDING COMPANY INC By: /s/ Howard M. Darmstadter -------------------------------------------- Name: Howard M. Darmstadter Title: Assistant Secretary SALOMON SMITH BARNEY HOLDINGS INC. By: /s/ Howard M. Darmstadter -------------------------------------------- Name: Howard M. Darmstadter Title: Assistant Secretary CITIGROUP INC. By: /s/ Joseph B. Wollard -------------------------------------------- Name: Joseph B. Wollard Title: Assistant Secretary