Exhibit 99.2
POWER OF ATTORNEY
The undersigned hereby appoints Peter A. Cohen, Morgan B. Stark, Thomas W. Strauss and Jeffrey M. Solomon, or any of them, his true and lawful attorney-in fact and agent to execute and file with the Securities and Exchange Commission any Schedule 13D, Schedule 13G, any settlement agreement, any amendments to any of the foregoing and any related documentation which may be required to be filed in his individual capacity as a result of the undersigned’s beneficial ownership of, or participation in a group with respect to, securities directly or indirectly beneficially owned by Ramius Capital Group, LLC or any of its affiliates, and granting unto said attorney-in-fact and agent full power and authority to do and perform each and every act and thing which he might or cou ld do in person, hereby ratifying and confirming all that said attorney-in-fact and agent may lawfully do or cause to be done by virtue hereof. The authority of Peter A, Cohen, Morgan B. Stark, Thomas W. Strauss and Jeffrey M. Solomon, or any of them, under this Power of Attorney shall continue with respect to the undersigned until the undersigned is no longer required to file Schedule 13Ds or Schedule 13Gs unless revoked earlier in writing.
Date: August 16, 2007
| /s/ Peter A. Cohen | ||
| Peter A. Cohen |
| /s/ Morgan B. Stark | ||
| Morgan B. Stark |
| /s/ Jeffrey M. Solomon | ||
| Jeffrey M. Solomon |
| /s/ Thomas W. Strauss | ||
| Thomas W. Strauss |