EX-99.1 2 a2150928zex-99_1.txt EX 99.1 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 4, 2005 CITIGROUP GLOBAL MARKETS INC. By: /s/ Serena D. Moe -------------------------------------------- Name: Serena D. Moe Title: Assistant Secretary CITIGROUP FINANCIAL PRODUCTS INC. By: /s/ Serena D. Moe -------------------------------------------- Name: Serena D. Moe Title: Assistant Secretary CITIGROUP GLOBAL MARKETS HOLDINGS INC. By: /s/ Serena D. Moe -------------------------------------------- Name: Serena D. Moe Title: Assistant Secretary CITIGROUP INC. By: /s/ Serena D. Moe -------------------------------------------- Name: Serena D. Moe Title: Assistant Secretary