Exhibit 1
AGREEMENT AS TO JOINT FILING OF SCHEDULE 13D
Dated December 19, 2007
The undersigned acknowledge and agree that the foregoing statement on Schedule
13D is filed on behalf of each of the undersigned and that all subsequent
amendments to this statement shall be filed on behalf of each of the undersigned
without the necessity of filing additional joint filing agreements. The
undersigned acknowledge that each shall be responsible for the timely filing of
such amendments, and for the completeness and accuracy of the information
concerning it contained therein, but shall not be responsible for the
completeness and accuracy of the information concerning the others, except to
the extent that it knows or has reason to believe that such information is
inaccurate.
This Agreement may be executed in counterparts and each of such
counterparts taken together shall constitute one and the same instrument.
BLUE HARBOUR GROUP, LP
By: Blue Harbour Holdings, LLC, its
general partner
By: /s/ Xxxxxxx X. Xxxxxxx
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Name: Xxxxxxx X. Xxxxxxx
Title: Managing Member
BLUE HARBOUR STRATEGIC VALUE
PARTNERS MASTER FUND, LP
By: Blue Harbour GP, LLC, its general
partner
By: /s/ Xxxxxxx X. Xxxxxxx
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Name: Xxxxxxx X. Xxxxxxx
Title: Managing Member
BLUE HARBOUR INSTITUTIONAL PARTNERS
MASTER FUND, L.P.
By: Blue Harbour GP, LLC, its general
partner
By: /s/ Xxxxxxx X. Xxxxxxx
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Name: Xxxxxxx X. Xxxxxxx
Title: Managing Member
BLUE HARBOUR GP, LLC
By: /s/ Xxxxxxx X. Xxxxxxx
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Name: Xxxxxxx X. Xxxxxxx
Title: Managing Member
BLUE HARBOUR HOLDINGS, LLC
By: /s/ Xxxxxxx X. Xxxxxxx
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Name: Xxxxxxx X. Xxxxxxx
Title: Managing Member
/s/ Xxxxxxx X. Xxxxxxx
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Xxxxxxx X. Xxxxxxx
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