EXHIBIT 99.1
Published on February 8, 2007
EXHIBIT 1
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AGREEMENT AS TO JOINT FILING OF SCHEDULE 13G
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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: February 9, 2007
CITIGROUP GLOBAL MARKETS INC.
By: /s/ Riqueza V. Feaster
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Name: Riqueza V. Feaster
Title: Assistant Secretary
CITIGROUP FINANCIAL PRODUCTS INC.
By: /s/ Riqueza V. Feaster
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Name: Riqueza V. Feaster
Title: Assistant Secretary
CITIGROUP GLOBAL MARKETS HOLDINGS INC.
By: /s/ Riqueza V. Feaster
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Name: Riqueza V. Feaster
Title: Assistant Secretary
CITIGROUP INC.
By: /s/ Riqueza V. Feaster
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Name: Riqueza V. Feaster
Title: Assistant Secretary