EXHIBIT 99.1

                             Joint Filing Agreement

         In accordance with Rule 13d-1(k) under the Securities and Exchange Act
of 1934, as amended, the undersigned agree to the joint filing on behalf of each
of them of a statement on Schedule 13D (including amendments thereto) with
respect to the Shares of the Issuer and further agree that this Joint Filing
Agreement be included as an exhibit to this Schedule 13D. Each party to this
Joint Filing Agreement expressly authorizes each other party to file on its
behalf any and all amendments to such statement on Schedule 13D.

         In evidence whereof, the undersigned, being duly authorized, have
executed this Joint Filing Agreement as of March 17, 2006.

                         PAR INVESTMENT PARTNERS

                         By: PAR Group, L.P., its General Partner
                         By PAR Capital Management, Inc., its General
                              Partner

                         By: /s/ Gina DiMento
                             -----------------------------------
                             Name: Gina DiMento
                             Title: Vice President


                         PAR GROUP, L.P.

                         By PAR Capital Management, Inc., its General
                              Partner

                         By: /s/ Gina DiMento
                             -----------------------------------
                             Name: Gina DiMento
                             Title: Vice President


                         PAR CAPITAL MANAGEMENT, INC.


                         By: /s/ Gina DiMento
                             -----------------------------------
                             Name: Gina DiMento
                             Title: Vice President