Exhibit 24.4

                               POWER OF ATTORNEY


STATE OF Michigan
COUNTY OF Washtenaw


    KNOW ALL MEN BY THESE PRESENTS that B. Joseph White, having an address at
3000 Hunting Valley, Ann Arbor, MI 48104, has made, constituted and appointed
and BY THESE PRESENTS, does make, constitute and appoint Douglas Crocker II
and Michael J. McHugh, or either of them, having an address at Two North
Riverside Plaza, Chicago, Illinois 60606, his true and lawful
Attorney-in-Fact for him and his name, place and stead to sign and execute in
any and all capacities this Annual Report on Form 10-K and any or all
amendments to this Annual Report granting unto each of such,
Attorney-in-Fact, full power and authority to do and perform each and every
act and thing, requisite and necessary to be done in an about the premises,
as fully, to all intents and purposes as he might or could do if personally
present at the doing thereof, with full power of substitution and revocation,
hereby ratifying and confirming all that each of such Attorney-in-Fact or his
substitutes shall lawfully do or cause to be done by virtue hereof.

    This Power of Attorney shall remain in full force and effect until
terminated by the undersigned through the instrumentality of a signed writing.

    IN WITNESS WHEREOF, B. Joseph White, has hereunto set his hand this 9th
day of March, 2000.

                                       /s/ B. Joseph White
                                       -------------------------
                                           B. Joseph White


    I, Sheryl L. Brueger, a Notary Public in and for said County in the State
of aforesaid, do hereby certify that B. Joseph White, personally known to me
to be the same person whose name is subscribed to the foregoing instrument
appeared before me this day in person and acknowledged that he signed and
delivered said instrument as his own free voluntary act for the uses and
purposes therein set forth.

    Given under my hand and notarial seal this 9th day of March, 2000.



                                       /s/ Sheryl L. Brueger
                                       -------------------------
                                            (Notary Public)


                                  Sheryl L. Brueger
                         Notary Public, Washtenaw County, MI
                         My Commission Expires Oct. 9, 2002

My Commission Expires:
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