EX-99.1 2 a2156073zex-99_1.txt EXHIBIT 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. Dated: April 19, 2005 CITIGROUP GLOBAL MARKETS LIMITED By: /s/ Andrew M. Gaulter -------------------------------------------- Name: Andrew M. Gaulter Title: Secretary CITIGROUP GLOBAL MARKETS EUROPE LIMITED By: /s/ Andrew M. Gaulter -------------------------------------------- Name: Andrew M. Gaulter Title: Secretary CITIGROUP GLOBAL MARKETS INTERNATIONAL LLC By: /s/ Andrew M. Gaulter -------------------------------------------- Name: Andrew M. Gaulter Title: 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