POWER OF ATTORNEY
For Executing Forms 3, 4 and 5

KNOW ALL BY THESE PRESENTS, that the undersigned hereby
constitutes and appoints Phyllis Alden, Catherine M. Kilbane and Robert
P. Ryder, and each individually, her lawful attorney-in-fact to:

(1)	execute for and on behalf of the undersigned Forms 3, 4 and 5 in
accordance with Section 16(a) of the Securities Exchange Act of 1934
and the rules thereunder;

(2)	do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to complete the
execution of any such Form 3, 4 or 5 and the timely filing of such form
with the United States Securities and Exchange Commission and any
other authority; and

(3)	take any other action of any type whatsoever in connection with
the foregoing which, in the opinion of such attorney-in-fact, may be of
benefit to, in the best interest of, or legally required by, the undersigned,
it being understood that the document executed by such attorney-in-fact
on behalf of the undersigned pursuant to this Power of Attorney shall be
in such form and shall contain such terms and conditions as such
attorney-in fact may approve in her or his discretion.

The undersigned hereby grants to each attorney-in-fact full power and
authority to do and perform all and every act and thing whatsoever
requisite, necessary and proper to be done in the exercise of any of the
rights and powers herein granted, as fully to all intents and purposes as
such attorney-in-fact might or could do if personally present, with full
power of substitution or revocation, hereby ratifying and confirming all
that such attorney-in-fact shall lawfully do or cause to be done by virtue
of this power of attorney and the rights and powers herein granted.  The
undersigned acknowledges that each foregoing attorney-in-fact, in
serving in such capacity at the request of the undersigned, is not
assuming any of the undersigned's responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934.

Unless earlier revoked, this Power of Attorney shall expire on February
28, 2008.

IN WITNESS WHEREOF, the undersigned has caused this power of
attorney to be executed as of this ____day of December, 2003.

___________________________
Jerry Sue Thornton