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

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


                                      Xxxx Xxxxx Capital Management, Inc.


Date: 11/12/2007                      /s/ Xxxxxxxx X. Xxxxxx
                                      Name:  Xxxxxxxx X. Xxxxxx
                                      Title: Chief Compliance Officer


                                      LMM LLC


Date: 11/12/2007                      /s/ Xxxxxxxx X. Xxxxxx
                                      Name:  Xxxxxxxx X. Xxxxxx
                                      Title: Chief Compliance Officer



                                      Xxxx Xxxxx Opportunity Trust, a portfolio
                                      of Xxxx Xxxxx investment Trust, Inc.


Date: 11/12/2007                      /s/ Xxxxxxx X. Xxxx
                                      Name:  Xxxxxxx X. Xxxx
                                      Title: Vice President