Exhibit 99.1
JOINT FILING AGREEMENT
The undersigned hereby agree that the foregoing statement on Schedule 13G/A is
filed on behalf of each of the undersigned in accordance with the provisions of
Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, and that
all subsequent amendments to this statement on Schedule 13G/A may be filed on
behalf of each of the undersigned without the necessity of filing additional
joint filing agreements.
Dated: November 21, 2007
S.A.C. CAPITAL ADVISORS, LLC
By: /s/ Xxxxx Xxxxxxxx
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Name: Xxxxx Xxxxxxxx
Title: Authorized Person
S.A.C. CAPITAL MANAGEMENT, LLC
By: /s/ Xxxxx Xxxxxxxx
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Name: Xxxxx Xxxxxxxx
Title: Authorized Person
S.A.C. CAPITAL ASSOCIATES, LLC
By: /s/ Xxxxx Xxxxxxxx
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Name: Xxxxx Xxxxxxxx
Title: Authorized Person
CR INTRINSIC INVESTORS, LLC
By: /s/ Xxxxx Xxxxxxxx
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Name: Xxxxx Xxxxxxxx
Title: Authorized Person
CR INTRINSIC INVESTMENTS, LLC
By: /s/ Xxxxx Xxxxxxxx
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Name: Xxxxx Xxxxxxxx
Title: Authorized Person
XXXXXX X. XXXXX
By: /s/ Xxxxx Xxxxxxxx
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Name: Xxxxx Xxxxxxxx
Title: Authorized Person
