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                                                                  Exhibit 10.87

                                PROMISSORY NOTE

      THIS PROMISSORY NOTE, made as of December 31, 1994 by and between DIHC
BERKELEY CORP., a Georgia corporation ("Maker"), having an office at Suite 2000,
200 Galleria Parkway, N.W., Atlanta, Georgia 30339, to and for the benefit of
STICHTING PENSIOENFONDS VOOR DE GEZONDHEID, GEESTELIJKE EN MAATSCHAPPELIJKE
BELANGEN, a foundation formed according to the laws of The Netherlands
("Payee"), having an office at Kroostweg Number 149, Zeist, The Netherlands.

      FOR VALUED RECEIVED, Maker promises to pay to the order of Payee at its
office recited above or at such other place as may be designated in writing by
the holder hereof, the principal sum of Forty-Four Million and No/100 Dollars
($44,000,000.00), with interest thereon, compounded monthly, at the rate of nine
percent (9%) per annum from the date hereof through December 31, 1999 and at the
"Market Rate" (as defined below) beginning January 1, 2000 through the Maturity
Date (as defined below), in lawful money of the United States of America, such
principal and interest to be payable as follows:

      An initial payment in the amount of Seven Hundred Ten Thousand Seven
Hundred Twenty Three and 15/100 Dollars ($710,723.15) shall be due and payable
on March 1, 1995. Thereafter, equal constant monthly payments in the amount of
Three Hundred Fifty Four Thousand Thirty Three and 95/100 Dollars ($354,033.95)
shall be due and payable on the first day of each month during the term of this
Note, beginning on April 1, 1995 through and including December 1, 1999.
Effective January 1, 2000, the interest rate charged on the outstanding balance
of this Note shall be adjusted to the "Market Rate" (as defined below). Upon
determination of such Market Rate, the amount of the equal monthly payments due
hereunder for the period beginning January 1, 2000 through the Maturity Date
shall be calculated to reflect the Market Rate and an amortization of the then
outstanding principal balance of this Note over a 25 year amortization period.
As used herein, the "Market Rate" of interest which will be charged during


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the period from January 1, 2000 through the Maturity Date means an annual rate
which is 1.5 percentage points (150 basis points) higher than the average yield
on U.S. Treasury securities having a 5 year maturity, as quoted in The Wall
Street Journal on December 1, 1999. The entire unpaid principal balance,
together with any accrued but unpaid interest thereon, shall be due and payable
on December 31, 2004 (the "Maturity Date").

      Upon any default hereunder and the continuance of such default for a
period of twenty (20) days after the due date, or upon any default under the
Pledge and Security Agreement (the "Security Agreement") of even date herewith,
from Maker to Payee securing this Note and the continuance of such default after
the expiration of any applicable grace period under the Security Agreement, then
at Payee's election, Maker shall pay to the holder hereof the principal and
interest remaining due and unpaid hereunder, together with all costs and
expenses incurred in connection with the collection or attempted collection
hereof and reasonable attorneys' fees actually incurred, whether or not suit is
instituted. Interest shall accrue on such amounts from the date of such default
at the rate of two percent (2%) per annum in excess of the rate charged from
time to time by Trust Company Bank, Atlanta, Georgia, on short term (90) day
unsecured loans to its preferred customers, provided that any such interest
which has accrued shall be paid at the time of and as a condition precedent to
the curing of any default.

      Maker agrees to be bound to the extent provided in the Security Agreement
and waives and renounces any and all exemption rights and the benefit of all
valuation and appraisal privileges as against the indebtedness evidenced hereby
or any renewal or extension thereof except as set forth in the Security
Agreement, waives demand, protest, notice of nonpayment, and any and all lack of
diligence or delays in the collection or enforcement hereof, and expressly
consents to any extension of time, release of any party liable for the
indebtedness evidenced hereby, release of any of the security of this Note,
acceptance of other security therefor, or any other indulgence or forbearance
whatsoever by Payee, any one or all of which may be made without notice to Maker
or such released party or any other party.


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      This Note may be prepaid in whole or in part at any time upon ten (10)
days' prior written notice, without fee or penalty, but with accrued interest on
the amount so prepaid.

      The parties hereto have intended in good faith to comply with all
applicable usury laws. Notwithstanding anything to the contrary contained in
this Note or any other instrument evidencing, securing, or relating to this
Note, Maker shall not be obligated or required to pay interest at a rate which
would subject Payee to either criminal or civil liability or forfeiture. If, by
the terms of this Note or any other instrument evidencing, securing or relating
to this Note, Maker at any time is required or obligated to pay interest on the
principal amount of this Note in an amount or at a rate in excess of the
applicable legal maximum, the interest due to Payee shall be immediately and
automatically reduced to such maximum, the interest payable shall be computed at
such maximum rate, and all prior interest payments in excess of such lawful
maximum shall be immediately and automatically applied, and shall be deemed to
have been treated as having been applied at the time or receipt, in reduction of
the principal balance due under this Note.

      The principal amount, plus accrued interest, shall become immediately due
and payable at the option of Payee upon the happening of any event by which said
balance shall or may become due and payable under the terms of the Security
Agreement (subject to any applicable grace period).

      No delays on the part of Payee in exercising any right hereunder or under
the Security Agreement or any other agreement further evidencing or securing
this Note shall operate as a waiver thereof or preclude the exercise thereof at
any time during the continuance of any default or during the continuance of a
subsequent default.

      Notwithstanding any other provisions of this Note or the Security
Agreement to the contrary, neither the obligation of Maker to pay the debt
evidenced by this Note and the Security Agreement nor the obligation of Maker to
perform any covenant or agreement contained in this Note or the Security
Agreement, shall be enforced by any action or proceeding wherein or whereby
damages or any money


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judgment shall be sought against Maker or any of its partners or officers,
directors or partners of such partners, except a foreclosure or other action
against the property encumbered by the Security Agreement, and any judgment in
any such foreclosure or other action shall be enforceable against Maker only to
the extent of its interest in such property and the income therefrom and no
deficiency or other personal judgment shall be rendered or entered against Maker
or any of its partners or officers, directors or partners of such partners in
such foreclosure or other action. Nothing in this paragraph shall, however, (1)
be deemed to affect the priority of the lien and the security interest created
by the Security Agreement, (2) impair the right of Payee to accelerate the
maturity of this Note (or to avail itself of its other rights and remedies
against the property encumbered by the Security Agreement and Maker's interest
therein,) upon a default under this Note or the Security Agreement, or (3)
relieve Maker of any of the covenants or obligations set forth in this note or
the Security Agreement subject, however, to the limitations on personal
liability set forth above.

      This Note may not be modified or terminated orally. This Note may be
assigned by Payee, in its sole discretion, without the consent of Maker. This
Note shall be construed and enforced in accordance with the law of Georgia.


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      IN WITNESS WHEREOF, Maker has executed this Note under seal effective as
of the date first set forth above.

                                    DIHC BERKELEY CORP.
                                    a Georgia Corporation


                                    By: /s/ Barrington H. Branch
                                        -----------------------------
                                        Barrington H. Branch
                                        President

                                    Attest: /s/ C. Lowell Ball
                                            -------------------------
                                            C. Lowell Ball
                                            Secretary


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