POWER OF ATTORNEY



BY THIS LIMITED POWER OF ATTORNEY, the undersigned hereby constitutes and
appoints Brian P. Hillery, Vice President of Wellington Management Company,
llp, acting singly with full power to act, his true and lawful attorney-in-fact,
with full power of substitution, to sign any and all instruments, certificates
and documents that may be necessary, desirable or appropriate to be executed on
behalf of himself in his capacity as a President of Wellington Trust Company,
na, pursuant to Section 13 of the United States Securities Exchange Act of 1934,
as amended (the "Exchange Act"), and any and all regulations promulgated
thereunder, and to file the same, with all exhibits thereto, and any other
documents in connection therewith, with the Securities and Exchange Commission,
and with any other entity when and if such is mandated or required, granting
unto said attorney-in-fact full power and authority to do and perform each and
every act and thing necessary, desirable or appropriate, fully to all intents
and purposes as he might or could do in person, thereby ratifying and confirming
all that said attorney-in-fact, or his substitutes, may lawfully do or cause to
be done by virtue hereof.

IN WITNESS WHEREOF, this Power of Attorney has been signed the 17th day of
January, 2002.





By:--//Jonathan M. Payson//--
Name:  Jonathan M. Payson
Title:     President
Wellington Trust Company, na