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                                                                   EXHIBIT 10.36

                              REVOLVING CREDIT NOTE

$1,000,000
Due Date: The earlier of Demand
or December 31, 2000                                   Dated:  December 30, 1999

         FOR VALUE RECEIVED, the undersigned promises to pay to the order of
WILLIAM P. O'REILLY (the "Lender"), at his office at 2000 Town Center, Suite
690, Southfield, Michigan 48075, or at such other place as Lender may designate
in writing, the principal sum of One Million ($1,000,000) Dollars, or such
lesser sum as shall have been advanced by Lender to Borrower pursuant to that
certain Loan and Security Agreement dated as of December 30, 1999, between
Borrower and Lender (which, together with all amendments and modifications
thereof, is hereinafter referred to as the "Loan Agreement"), plus interest as
hereinafter provided, all in lawful money of the United States of America, in
accordance with the terms hereof.

         The unpaid principal balance of this Revolving Credit Note ("Note")
shall bear interest computed upon the basis of a year of 360 days for the actual
number of days elapsed in a month, at a rate of interest (the "Effective Rate")
which is equal to the prime rate as reported in The Wall Street Journal, plus
1.5% per annum.

         Interest on all principal amounts advanced by Lender from time to time
and unpaid by Borrower shall be paid on the last day of the month hereafter and
on the last day of each month thereafter until the Due Date, upon which date the
entire unpaid principal balance of this Note, together with all accrued and
unpaid interest, shall be due and payable in full. If Borrower makes and Lender
accepts a payment made five (5) days after the last day for such payment,
Borrower shall pay with such payment a late charge equal to five (5%) percent
thereof. Payments required on the Due Date shall not have a late charge, but the
default interest specified below shall accrue commencing on the day following
the Due Date.

         Advances of principal, repayment, and readvances may be made under this
Note from time to time, upon the terms set forth in the Loan Agreement and said
Loan Agreement is incorporated herein by reference. All advances made hereunder
shall be charged to a loan account in Borrower's name on Lender's books, and
Lender shall debit to such account the amount of each advance made to, and
credit to such account the amount of each repayment made by Borrower. Lender
shall furnish Borrower with a monthly statement of Borrower's loan account,
which statement shall be deemed to be correct, accepted by, and binding upon
Borrower, unless Lender receives a written statement of exceptions from Borrower
within thirty (30) days after such statement has been furnished. Borrower
expressly assumes all risks of loss or delay in the delivery of any payments

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made by mail, and no course of conduct or dealing shall affect Borrower's
assumption of these risks.

         Upon the Due Date, which Borrower acknowledges may be upon demand,
Lender, without prior notice to Borrower, may declare the entire unpaid
principal balance of this Note and all accrued interest, together with all other
indebtedness of Borrower to Lender, to be immediately due and payable. Upon the
occurrence of any Default specified on the Loan Agreement or upon demand, the
unpaid principal balance of this Note shall bear interest at a rate which is
three (3.0%) percentage points greater than the Effective Rate. After Default or
demand, Lender may apply its own indebtedness or liability to Borrower to any
indebtedness due under this Note. Borrower agrees to pay all of the Lender's
costs incurred in the collection of this Note as provided in the Loan Agreement.

         Acceptance by Lender of any payment in an amount less than the amount
then due shall be deemed an acceptance on account only. Upon any Default,
neither the failure of the Lender promptly to exercise its right to declare the
outstanding principal and accrued unpaid interest hereunder to be immediately
due and payable, nor the failure of the Lender to demand strict performance of
any other obligation of the Borrower or any other person who may be liable
hereunder, shall constitute a waiver of any such rights, nor a waiver of such
rights in connection with any future default on the part of the Borrower or any
other person who may be liable hereunder.

         Borrower acknowledges that no Default is necessary for Lender to make
demand.

         Borrower and all endorsees, sureties and guarantors hereof hereby
jointly and severally waive presentment for payment, demand, notice of
non-payment, notice of protest or protest of this Note, and Lender diligence in
collection or bringing suit, and do hereby consent to any and all extensions of
time, renewals, waivers or modifications as may be granted by Lender with
respect to payment or any other provisions of this Note, and to the release of
any collateral or any part thereof, with or without substitution. The liability
of Borrower under this Note shall be absolute and unconditional, without regard
to the liability of any other party. This Note has been executed in the State of
Georgia, and all rights and obligations hereunder shall be governed by the laws
of such state.

         In no event whatsoever shall the interest rate and other charges
charged hereunder exceed the highest rate permissible under any law which a
court of competent jurisdiction shall, in the final determination, deem
applicable hereto. In the event that a court determines that Lender has received
interest or other charges hereunder in excess of the highest rate applicable
hereto, Lender shall, either in its sole discretion, promptly apply such amounts
to the principal due hereunder or refund such amount to Borrower and the
provisions herein shall be deemed amended to provide for such permissible rate.

         Lender acknowledges that the Borrower's obligations under this Note are
limited by the terms of the Senior Indebtedness and Senior Lien (as defined in
the Loan Agreement)

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         This Note is issued pursuant to the terms of the Loan Agreement and is
secured by the Collateral, as defined in the Loan Agreement. All of the terms,
covenants and conditions of the Loan Agreement are hereby made a part of this
Note and are hereby incorporated by reference.

                                           "BORROWER"

                                           ELTRAX SYSTEMS, INC.,
                                           a Minnesota corporation

                                           By:    /s/ Don G. Hallacy
                                              ----------------------------------
                                                  Don G. Hallacy, President

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                                                                    EXHIBIT 10.4

                                 ACKNOWLEDGMENT

      1. Dennis Nelson, currently employed by The Buckle, Inc. ("Company") of
Kearney, Nebraska, will be paid an annual salary of $650,000 for so long as the
employee is employed by the Company during the fiscal year ending February 3,
2001.

      2. In addition to the salary outlined in paragraph 1, above, a "Cash
Award" for the above fiscal year will be paid to you provided you are employed
by the Company on the last day of such fiscal year. Your Cash Award will be
calculated based upon the Company's growth in Pre-Bonus Net Income over the
previous year. You are designated a Level I Executive. The incentive multiple
level based on the percentage of change in Pre-Bonus Net Income is tied to your
base salary. The multiples for your fiscal 2000 cash award will be calculated as
follows:

                                                      Multiple
                                                      of Base
                                                      Salary
                               LEVEL I

                  Change in Pre-Bonus Net Income      2000
                  ------------------------------      ----
                    >30% decrease                     0.00
                     30% decrease                     0.00
                     20% decrease                     0.65
                     10% decrease                     0.95
                     No Change                        1.25
                    >10% increase                     1.60
                    >20% increase                     2.00
                    >30% increase                     2.50
                    >40% increase                     2.90
                    >50% increase                     3.30

      No payment of a Cash Award for the year may be made until the Company's
Pre-Bonus Net Income for the year is certified by the Compensation Committee.
You shall not be entitled to receive payment of a Cash Award unless you are
still in the employ of (and shall not have delivered notice of resignation to)
the Company on the last day of the fiscal year for which the Cash Award is
earned.

      The Cash Award will be paid on or before April 15 following the close of
the fiscal year. For calculating this Cash Award, "Pre-Bonus Net Income" shall
be defined as the Company's net income from operations after the deduction of
all expenses, excluding administrative and store manager percentage bonuses and
excluding income taxes, but including draws against such bonuses. Net income
from operations does not include earnings on cash investments. For this purpose,
net income shall be computed by the Company in accordance with the Company's
normal accounting practices, and the Company's calculations will be final and
conclusive.

            3. Restricted Stock will be granted based upon a percentage of the
      Cash Award and the fair market value of the Company's stock on the date of
      certification by the Compensation Committee of the amount of the Cash
      Award. Restricted Stock grants will be based upon the following:

      Change in Pre-Bonus Net Income                     Level I Executives
      ------------------------------                     ------------------
      Any decrease                                              none
      No Change                                                 10%
      10% increase                                              15%
      20% increase                                              20%

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        30% increase and up                           30%

Restricted Stock granted pursuant to this Plan will vest 20% per year over five
years. Disposal of any vested shares of Restricted Stock will be prohibited for
five years, subject to waiver in the event of death or disability. The effect on
income of all Restricted Stock grants will be included in the calculation of
Pre-Bonus Net Income.

      4. Options to purchase 103,500 shares ("Options") of The Buckle, Inc.
common stock at $16.375 per share were granted to you pursuant to the 1997
Executive Stock Option Plan as of the last day of the fiscal year preceding this
Plan (1-29-00). Options granted under the Plan will vest according to the same
terms as the 1997 Management Incentive Plan. Those terms include a performance
feature whereby one-half of the Options granted will vest over three years if a
10% increase in Pre-Bonus Net Income is achieved, and the second one-half of the
Options granted vest over three years if a 30% increase in Pre-Bonus Net Income
is achieved. If the performance goals are not met the Options will ultimately
vest after ten years. This Plan added an "accelerator" feature for the Options
so that vesting may occur sooner than the three or ten years when and if the
market price of the Company's stock doubles from the fair market value of the
stock at the date of the grant. All Options will also include a "reload" feature
under this Plan.

      5. You are allowed personal use of a company owned vehicle. You are also
allowed personal use of a corporate owned aircraft for up to 30 hours this
fiscal year.

      6. A credit limit of $3,500 has been established on your The Buckle charge
account, subject to annual change as determined by management. Please make sure
your charge account balance does not exceed this limit. You may have payments
made to your charge account via payroll withholding during the year.

      Management is committed to reviewing its policies continually.
Accordingly, the statements outlined above are subject to review and change at
any time, with or without notice.

      I understand I have the right to terminate my employment with the Company
at any time, with or without notice, and the Company retains the same right,
with or without cause or notice. I recognize, therefore, that I am an "at will"
employee.

      This acknowledgment supersedes any prior acknowledgment or agreement with
the Company. This acknowledgment does not constitute an agreement of employment
with the Company.

April 18, 2000
The Buckle, Inc.

Acknowledged by:   /s/ DENNIS H. NELSON
                   --------------------
                       Dennis H. Nelson

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