Form: SC 13G/A

Schedule filed to report acquisition of beneficial ownership of 5% or more of a class of equity securities by passive investors and certain institutions

February 14, 2008

JOINT FILING AGREEMENT

Published on February 14, 2008

This Joint Filing Agreement confirms the agreement by and among the undersigned
that the Schedule 13G is filed on behalf of each of the reporting person(s)
identified below.

Legg Mason Capital Management, Inc.


By:_____/s/_Nicholas C. Milano____________________________
Nicholas C. Milano, Chief Compliance Officer

Legg Special Investment Trust, Inc.


By:___/s/_Gregory T. Merz_________________________________
Gregory T. Merz, Vice President

LMM LLC


By:_____/s/_Nicholas C. Milano____________________________
Nicholas C. Milano, Chief Compliance Officer