Document:

<PAGE>
                                                                   EXHIBIT 10.45

                          LOCK-UP AND VOTING AGREEMENT

         This Lock-up and Voting Agreement, dated as of July 18, 2002 (this
"Agreement"), is entered into by and between Mobility Electronics, Inc., a
Delaware corporation ("Parent"), iGo Corporation, a Delaware corporation (the
"Company"), XMicro Holding Company, Inc., a California corporation, and Mark
Rapparport ("Company Stockholder"). All capitalized terms used herein without
definition having the respective meanings ascribed to them in the Merger
Agreement (as defined below).

                                   WITNESSETH:

         WHEREAS, Parent, IGOC Corporation, a Delaware corporation ("Sub"), and
the Company have entered into an Agreement and Plan of Merger, dated as of March
23, 2002 (the "Merger Agreement"); and

         WHEREAS, simultaneously with the execution and delivery of this
Agreement by the parties hereto, the Company, Parent, XMicro, Company
Stockholder and certain other persons and entities, executed and delivered a
Settlement Agreement, of even date herewith (the "Settlement Agreement"); and

         WHEREAS, as a condition and inducement to Parent and the Company
entering into the Settlement Agreement, the Company Stockholder has agreed to
vote and to cause to be voted all shares of Company Common Stock now owned or
hereafter acquired by the Company Stockholder, for and in favor of the merger of
the Company with and into Sub contemplated by the Merger Agreement (the
"Merger"), and have agreed to the other terms and provisions contained herein;

         NOW, THEREFORE, in consideration of the premises and the respective
covenants and agreements set forth herein and in the Settlement Agreement, the
parties hereto, intending to be legally bound hereby, agree as follows:

         1. Definitions. Each term used herein with its initial letter
capitalized and not otherwise defined shall have the meaning assigned to such
term in the Merger Agreement. The following terms shall have the respective
meanings set forth below:

                  (a) "Disposition" shall mean any sale, exchange, assignment,
gift, pledge, mortgage, hypothecation, transfer or other disposition or
encumbrance of all or any part of the rights and incidents of ownership of
Company Common Stock, including the right to vote, and the right to possession
of Company Common Stock as collateral for indebtedness, whether such transfer is
outright or conditional, or for or without consideration.

                  (b) "Term" shall mean the period commencing on the date hereof
and continuing until the first to occur of any of the triggering events set
forth in Sections 7(g), 7(h) and 7(i) of the Settlement Agreement.

         2. Voting of Company Common Stock. The Company Stockholder hereby
agrees that, during the Term, at any meeting (whether annual or special and
whether or not an adjourned

                                       1
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or postponed meeting) of the holders of Company Common Stock, however called, or
in connection with any written consent of the holders of Company Common Stock,
the Company Stockholder will appear at the meeting or otherwise cause the shares
of Company Common Stock now owned or hereafter acquired by the Company
Stockholder (the "Company Shares") to be counted as present thereat for purposes
of establishing a quorum and vote or consent (or cause to be voted or consented)
the Company Shares (a) in favor of the adoption of the Merger Agreement and the
approval of all other actions contemplated by the Merger Agreement and this
Agreement and any actions required in furtherance thereof and hereof, (b)
against any action or agreement that would result in a breach in any respect of
any covenant, representation or warranty or any other obligation or agreement of
the Company under the Merger Agreement, and (c) against any action involving the
Company or its subsidiaries which is intended, or could reasonably be expected,
to impede, interfere with, delay, postpone, or materially adversely affect the
transactions contemplated by the Merger Agreement.

         3. Restriction on Disposition of Company Common Stock. The Company
Stockholder hereby agrees that, during the Term, the Company Stockholder will
not make, offer to make, agree to make, or suffer any Disposition of its Company
Shares or any interest therein, except as provided in the Settlement Agreement
and the Depository Agreement which is an Exhibit to the Settlement Agreement
(the "Depository Agreement").

         4. Restriction Proxies and Non-Interference. Except as provided in the
Settlement Agreement and the Depository Agreement, the Company Stockholder
hereby agrees that, during the Term, the Company Stockholder will not (i) grant
any proxies or powers or attorney that would permit any such proxy or
attorney-in-fact to take any action inconsistent herewith, (ii) deposit its
Company Shares into a voting trust or enter into a voting agreement with respect
to such Company Shares in either case providing for the voting or consenting of
such shares in a manner inconsistent herewith; or (iii) take any action that
would make any representation or warranty of the Company Stockholder contained
herein untrue or incorrect or would result in a breach by the Company
Stockholder of its obligations under this Agreement. The Company Stockholder
further agrees not to enter into any agreement or understanding with any Person,
the effect of which would be inconsistent with or violative of any provision
contained in this Agreement.

         5. Covenants. Representations and Warranties of Company Stockholders.
The Company Stockholder hereby represents and warrants to, and agrees with,
Parent and iGo as follows:

                  (a) Ownership of Shares. Such Company Stockholder is the sole
record and beneficial owner of 3,531,199 of shares of Company Common Stock. On
the date hereof, such Company Shares constitute all of the shares of Company
Common Stock owned of record or beneficially owned by the Company Stockholder.
The Company Stockholder has sole voting power and sole power to issue
instructions with respect to the matters set forth in this Agreement, sole power
of disposition, and sole power to agree to all of the matters set forth in this
Agreement, in each case with respect to all of such Company Shares, with no
limitations, qualifications or restrictions on such rights, subject to
applicable securities laws and the terms of this Agreement.

                                       2
<PAGE>

                  (b) Authorization. The Company Stockholder has the full legal
right to execute and deliver this Agreement and perform its obligations
hereunder. This Agreement has been duly and validly executed and delivered by
the Company Stockholder and constitutes a valid and binding agreement
enforceable against the Company Stockholder in accordance with its terms except
(i) as may be limited by applicable bankruptcy, insolvency or similar laws
affecting creditors' rights, and (ii) that the remedy of specific performance
and injunctive and other forms of equitable relief may be subject to equitable
defenses and to the discretion of the court before which any proceeding
therefore may be brought.

                  (c) No Conflicts. Except for filings, authorizations, consents
and approvals as may be required under the Securities Act and the Exchange Act,
(i) no filing with, and no permit, authorization, consent or approval of, any
state or federal governmental authority, or any other Person, is necessary for
the execution of this Agreement by the Company Stockholder and the consummation
by the Company Stockholder of the transactions contemplated hereby, and (ii)
none of the execution and delivery of this Agreement by the Company Stockholder,
the consummation by the Company Stockholder of the transactions contemplated
hereby or compliance by the Company Stockholder with any of the provisions
hereof will (A) conflict with or result in any breach of the organizational
documents of the Company Stockholder, (B) result in a violation or breach of, or
constitute (with or without notice or lapse of time or both) a default (or give
rise to any third party right of termination, cancellation, material
modification or acceleration) under any of the terms, conditions or provisions
of any note, loan agreement, bond, mortgage, indenture, license, contract,
commitment, arrangement, understanding, agreement or other instrument or
obligation of any kind to which the Company Stockholder is a party or by which
the Company Stockholder or any of its properties or assets may be bound, or (C)
violate any order, writ, injunction, decree, judgment, statute, role or
regulation applicable to the Company Stockholder or any of his or its properties
or assets.

                  (d) No Encumbrances. Except as provided in the Settlement
Agreement and the Depository Agreement. the Company Stockholder owns its Company
Shares free and clear of all liens, claims, security interests, proxies, voting
trusts or agreements, or any other encumbrances whatsoever, except for (i) any
such matters arising hereunder and (ii) bona fide pledges of such shares as
security for obligations owed to the Company; provided, however, in the event
that the Company acquires any interest in all or any of such shares, including,
without limitation, legal or beneficial ownership thereof or any voting rights
with respect thereto, whether through foreclosure or otherwise, the Company
hereby agrees to be bound by the terms of this Agreement with respect to such
shares as if it were the Company Stockholder.

                  (e) Reliance by Parent and the Company. The Company
Stockholder understands and acknowledges that Parent and the Company are
entering into the Settlement Agreement in reliance upon such Company
Stockholder's execution and delivery of, and compliance with, this Agreement.

         6. Termination. This Agreement will terminate upon the first to occur
of any of the triggering events set forth in Section 7(g), 7(h) and 7(i) of the
Settlement Agreement.

                                       3
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         7. Miscellaneous.

                  (a) Entire Agreement. This Agreement constitutes the entire
agreement among the parties with respect to the subject matter hereof and
supersedes all other prior agreements and understandings, both written and oral,
between the parties with respect to the subject matter hereof.

                  (b) Certain Events. So long as this Agreement has not been
terminated as provided in Section 6 above, the Company Stockholder agrees that
this Agreement and the obligations hereunder shall attach to its Company Shares
and shall be binding upon any Person to which legal or beneficial ownership of
such Company Shares shall pass, whether by operation of law or otherwise,
including, without limitation, such Stockholder's successors. Notwithstanding
any such transfer of Company Shares, the transferor shall remain liable for the
performance of all obligations under this Agreement of the transferor.

                  (c) Change in Company Common Stock. In the event of a stock
dividend or distribution, or any change in the Company Common Stock by reason of
any stock dividend, split-up, recapitalization, combination, exchange of shares
or the like, the term "Company Shares" shall be deemed to refer to and include
the Company Shares as well as all such stock dividends and distributions and any
shares into which or for which any or all of the Company Shares may be changed
or exchanged.

                  (d) Acquisition of Additional Company Shares. The Company
Stockholder agrees to promptly notify Parent and iGo of the number of shares of
Company Common Stock acquired by such Company Stockholder, if any, after the
date of this Agreement.

                  (e) Waiver of Appraisal Rights. The Company Stockholder hereby
waives, releases and discharges any rights of appraisal or rights to dissent
from the Merger that the Company Stockholder may have.

                  (f) Assignments; Rights of Assignees; Third Party
Beneficiaries. This Agreement shall not be assignable by the Company Stockholder
without the prior written consent of Parent and the Company. This Agreement
shall be binding upon, inure to the benefit of, and be enforceable by, the
parties hereto and their respective heirs, executors, administrators, legal
representatives, successors and permitted assigns. Nothing expressed or referred
to in this Agreement is intended or shall be construed to give any Person other
than the parties to this Agreement or their respective heirs, executors,
administrators, legal representatives, successors or permitted assigns any legal
or equitable right, remedy or claim under or in respect of this Agreement or any
provision contained herein.

                  (g) Specific Performance. The parties hereto acknowledge that
money damages are an inadequate remedy for breach of this Agreement because of
the difficulty of ascertaining the amount of damage that will be suffered by the
non-breaching party or parties in the event that this Agreement is breached.
Therefore, each of the parties agrees that the non-breaching party or parties
may obtain specific performance of this Agreement and injunctive and other
equitable relief against any breach hereof, without the necessity of
establishing irreparable

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harm or posting any bond, in addition to any other remedy to which such party
may be entitled at law or in equity.

                  (h) Waiver. No waiver of any provision of this Agreement shall
be effective unless it is in writing signed by the party granting the waiver,
and a waiver by any party hereto of any one or more defaults shall not operate
as a waiver of any future default or defaults, whether of a like or of a
different character. No waiver of any of the provisions of this Agreement shall
constitute a waiver of any other provisions (whether or not similar), nor shall
such a waiver constitute a continuing waiver, unless otherwise expressly
provided.

                  (i) Section Headings. Headings contained in this Agreement are
inserted only as a matter of convenience and in no way define, limit, or extend
the scope or intent of this Agreement or any provisions thereof.

                  (j) Choice of Law. This Agreement will be governed by and
construed and enforced in accordance with the laws of the State of Delaware
(without regard to the principles of conflicts of law) applicable to a contract
executed and to be performed in such State. Each party hereto (i) agrees to
submit to personal jurisdiction and to waive any objection as to venue in the
state or federal courts located in Maricopa County, Arizona, (ii) agrees that
any action or proceeding shall be brought exclusively in such courts, unless
subject matter jurisdiction or personal jurisdiction cannot be obtained, and
(iii) agrees that service of process on any party in any such action shall be
effective if made by registered or certified mail addressed to such party at the
address specified herein, or to any panics hereto at such other addresses as he,
she or it may from time to time specify to the other parties in writing for such
purpose. The exclusive choice of forum set forth in this paragraph shall not be
deemed to preclude the enforcement of any judgment obtained in such forum or the
taking of any action under this Agreement to enforce such judgment in any
appropriate jurisdiction.

                  (k) Notices. All notices, requests and other communications to
any party hereunder shall be in writing and will be deemed to have been duly
given only if delivered personally or by facsimile transmission or mailed (first
class mail postage prepaid), or by overnight express courier (charges prepaid or
billed to the account of the sender) to the parties at the following addresses
or facsimile numbers:

<Table>
<S>                                                            <C>
                      If to Parent:                               Mobility Electronics, Inc.
                                                                  7955 East Redfield Road
                                                                  Scottsdale, Arizona 85260
                                                                  Fax:           (480) 596-0061
                                                                  Attention:     Charles R. Mollo

                      If to the Company:                          iGo Corporation
                                                                  9393 Gateway Drive
                                                                  Reno, Nevada 89511
                                                                  Fax:           (775) 746-6156
                                                                  Attention:     David E. Olson
</Table>

                                       5
<PAGE>

<Table>
<S>                                                            <C>
                      If to the Company Stockholder:              Mark Rapparport
                                                                  2435 East Coast Highway, Suite 5
                                                                  Corona del Mar, California 92625
</Table>

or to such other address or fax number as any party may have famished to the
others in writing in accordance herewith.

                  (l) Counterparts. This Agreement may be executed in any number
of counterparts, each of which shall be deemed to be an original, but all of
which together shall constitute one and the same document.

                  (m) Severability of Provisions. If any term, provision,
covenant or restriction of this Agreement is held by a court of competent
jurisdiction to be invalid, void or unenforceable, the remainder of the terms,
provisions, covenants and restrictions of this Agreement shall remain in full
force and effect and shall not in any way be affected, impaired or invalidated.

         8. Effectiveness. This Agreement shall become effective simultaneously
with the execution and delivery of the Settlement Agreement.

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed as of the date first set forth above.

                                    MOBILITY ELECTRONICS, INC.

                                    By:      /s/ Jeffrey S. Doss
                                             -----------------------------------
                                    Title:   Executive Vice President

                                    IGO CORPORATION

                                    By:      /s/ Scott Shackelton
                                             -----------------------------------
                                    Title:   CFO

                                    XMICRO HOLDING COMPANY, INC.

                                    By:      /s/ Mark Rapparport
                                             -----------------------------------
                                    Title:   President

                                             /s/ Mark Rapparport
                                    --------------------------------------------
                                             Mark Rapparport

                                       6
<PAGE>

                                    EXHIBIT C

                            ADDRESSES OF THE PARTIES

<Table>
<S>                                                           <C>
If to the Company or iGo:                                     c/o iGo Corporation
                                                              9393 Gateway Drive
                                                              Reno, Nevada  89511
                                                              Fax:     (775) 746-6156
                                                              Attn:    David E. Olson

If to XMicro or Rapparport:                                   Mark Rapparport c/o Walter G. Koontz, Jr.
                                                              4675 MacArthur Ct, Suite 1200
                                                              Newport Beach, California  92660
                                                              949-476-1836

If to Mobility:                                               Mobility Electronics, Inc.
                                                              7955 East Redfield Road
                                                              Scottsdale, Arizona  85260
                                                              Fax:     (4800 596-0349
                                                              Attn:    Charles R. Mollo

If to Ken Hawk:                                               Ken Hawk, Trustee of the Kenneth W. Hawk
                                                              Grantor Retained Annuity Trust
                                                              1805 Caughlin Creek Road
                                                              Reno, Nevada  89509

If to
Institutional Venture Partners VIII, L.P.                     3000 Sand Hill Road
IVM Investment Fund VIII, LLC                                 Building 2, Suite 290
IVM Investment Fund VIII-A, LLC                               Menlo Park, California  94025
IVP Founders Fund I, L.P.                                     (650) 854-5762 fax
Reid W. Dennis
Peter Gotcher
Ross Bott Ph.D.

If to:
Robert Darrell Boyle and Lauren Reeves                        15231 Quito Road
Boyle, Trustees UTA dated August 26, 1994                     Saratoga, California  95070
                                                              (408) 395-5853 fax

If to:
David Olson                                                   c/o iGo Corporation
Scott Shackelton                                              9393 Gateway Drive
                                                              Reno, Nevada  89511
                                                              (775) 850-9404 fax
</Table>

                                       C-1<PAGE>
                                                                     EXHIBIT 4.2

                          INSURANCE AUTO AUCTIONS, INC.
                             1991 STOCK OPTION PLAN

                             AS RESTATED AND AMENDED
                              THROUGH JUNE 19, 2002

I.       PURPOSE.

         This Insurance Auto Auctions, Inc. 1991 Stock Option Plan ("Plan") is
intended to enable Insurance Auto Auctions, Inc. ("Corporation") to attract and
retain the following individuals and to encourage such individuals to acquire a
proprietary interest in the Corporation: (a) employees (including officers and
directors) of the Corporation and its subsidiaries primarily responsible for the
management, growth and financial success of the Corporation and its
subsidiaries, (b) non-employee members of the Corporation's Board of Directors
and (c) consultants and independent contractors who perform valuable services
for the Corporation or its subsidiaries.

II.      ADMINISTRATION.

         The Plan will be administered by a committee or committees appointed by
the Corporation's Board of Directors ("Board"), and each such committee shall
consist of one or more members of the Board. The Board may delegate the
responsibility for administration of the Plan with respect to designated classes
of optionees to different committees, subject to such limitations as the Board
deems appropriate. With respect to any matter, the term "Committee," when used
in this Plan, will refer to the committee that has been delegated authority with
respect to such matter. Members of a committee will serve for such term as the
Board may determine and will be subject to removal by the Board at any time.

         (a) 16(b). The composition of any committee responsible for
administration of the Plan with respect to optionees who are subject to the
short-swing profit restrictions of Section 16(b) of the Securities Exchange Act
of 1934, as amended ("1934 Act") with respect to their trading in securities of
the Corporation will be comprised of two or more non-employee Board members who
have not received, at any time during the one-year period preceding the date of
their appointment to such committee or (if shorter) during the period between
the initial registration of the Corporation's equity securities under Section 12
of the 1934 Act and such appointment, any stock options, stock appreciation
rights or stock issuances under this Plan or under any other stock option, stock
appreciation, stock bonus, stock purchase or other stock plan of the Corporation
or its subsidiaries, except for automatic option grants made pursuant to Section
VI of this Plan.

         (b AUTHORITY. Any committee appointed by the Board will have full
authority to administer the Plan within the scope of its delegated
responsibilities, including authority to interpret and construe any relevant
provision of the Plan, to adopt such rules and regulations as it may deem
necessary, and to determine the terms of the grants made from time to time under
the

<PAGE>

Plan (which need not be identical). Decisions of a committee made within the
discretion delegated to it by the Board will be final and binding on all persons
who have an interest in the Plan.

III.     ELIGIBILITY FOR AWARDS.

         (a) DISCRETIONARY AWARDS. The Committee may, in its discretion, select
individuals from among the following categories to receive options under the
Plan:

             (1) KEY EMPLOYEES. The Committee may select key employees of the
Corporation or its subsidiaries (including

officers, whether or not they are also members of the Board).

             (2) CONSULTANTS AND INDEPENDENT CONTRACTORS. The Committee may
select consultants and independent contractors whose services tend to contribute
materially to the success of the Corporation or its subsidiaries or whose
services may reasonably be anticipated to so contribute.

            Prior to November 20, 1991 ("IPO Date"), discretionary grants could
be made to members of the Board who were not employees of the Corporation or its
subsidiaries.

         (b) AUTOMATIC GRANTS. On and after the IPO Date, members of the Board
who are not employees of the Corporation or its subsidiaries will receive
options in accordance with, and only in accordance with, the Automatic Option
Grant provisions of Section VI.

IV.      STOCK SUBJECT TO THE PLAN.

         (a) CLASS. The stock subject to options granted under the Plan is the
Corporation's authorized but unissued or reacquired shares of Common Stock
("Common Stock"). In connection with the issuance of shares under the Plan, the
Corporation may repurchase shares in the open market or otherwise.

         (b) AGGREGATE AMOUNT.

             (1) SHARES. Subject to adjustment under Section IV(c), the maximum
number of shares of Common Stock issuable under the Plan is 3,100,000 shares(1).

             (2) PARTICIPANT LIMITATION. No individual participating in the Plan
may be granted stock options and separately exercisable stock appreciation
rights for more than 500,000 shares of Common Stock over the remaining term of
the Plan, subject to periodic adjustment under Section IV(c). For purposes of
such limitation, no stock options or stock appreciation rights granted prior to
January 1, 1994 shall be taken into account.

----------

(1)  Includes the 750,000-share increases authorized by the Board on April 18,
     2002, and approved by the shareholders at the 2002 Annual Meeting.

                                       2
<PAGE>

             (3) REUSE OF SHARES. If any outstanding option under this Plan
expires or terminates for any reason (including cancellation pursuant to
Section IX of the Plan) before being exercised for the full number of shares to
which it applies, the shares allocable to the unexercised portion of such option
will not be charged against the limitation of Section IV(b)(1) and will become
available for subsequent grants under the Plan. Shares subject to any option (or
portion thereof) surrendered or cancelled in accordance with the "Surrender or
Cancellation of Options for Cash or Stock" provisions of this Plan and all stock
issuances under the Plan, whether or not the shares are subsequently repurchased
by the Corporation pursuant to its repurchase rights under the Plan, shall
reduce on a share-for-share basis the number of shares of Common Stock available
for subsequent issuance under this Plan. Should the exercise price of an
outstanding option under the Plan be paid with shares of Common Stock or should
shares of Common Stock otherwise issuable under the Plan be withheld by the
Corporation in satisfaction of the withholding taxes incurred in connection with
the exercise of an outstanding option under the Plan, the number of shares of
Common Stock issuable under the Plan shall be reduced by the gross number of
shares for which the option is exercised, and not by the net number of shares of
Common Stock actually issued to the option holder.

         (c) ADJUSTMENTS. In the event any change is made to the Common Stock
subject to the Plan or subject to any outstanding option granted under the Plan
(whether by reason of merger, consolidation, reorganization, recapitalization,
stock dividend, stock split, combination of shares, exchange of shares, or other
change in corporate or capital structure of the Corporation effected without the
Corporation's receipt of consideration) then, unless such change results in the
termination of all outstanding options, the Committee shall make appropriate
adjustments to (i) the maximum number and/or class of securities available for
issuance under the Plan, (ii) the maximum number and/or class of securities for
which any one individual may be granted stock options and separately-exercisable
stock appreciation rights under the Plan after December 31, 1993, (iii) the
number and/or class of securities and the price per share in effect under each
outstanding option under the Plan (including the automatic option grants) and
(iv) the number and/or class of securities per non-employee Board member for
which automatic option grants are subsequently to be made under the Automatic
Option Grant provisions of the Plan. The adjustments made by the Committee will
be final, binding and conclusive and will be designed to prevent the dilution or
enlargement of rights and benefits under the Plan.

V.       TERMS OF OPTIONS.

         Stock options granted under the Plan may, in the Committee's
discretion, be either incentive stock options ("Incentive Options") qualifying
under Section 422 of the Internal Revenue Code of 1986, as amended ("Internal
Revenue Code"), or nonstatutory options. Individuals who are not employees of
the Corporation or its subsidiaries may only be granted nonstatutory options.
Options will be evidenced by instruments in such form as the Committee may from
time to time approve. These instruments will conform to the following terms and,
in the discretion of the Committee, may contain such other terms and
restrictions as are not inconsistent with the following:

         (a) OPTION PRICE. The option price per share will be fixed by the
Committee; provided, however, that in no event will the option price per share
of an Incentive Option be less

                                       3
<PAGE>

than one hundred percent (100%), or with respect to nonstatutory options,
eighty-five percent (85%), of the Fair Market Value of a share of Common Stock
on the date of the option grant.

         (b) NUMBER OF SHARES, TERM AND EXERCISE.

             (1) TERM AND NUMBER. Each option granted under the Plan will be
exercisable on such date or dates, during such period, and for such number of
shares of Common Stock as the Committee determines and sets forth in the
instrument evidencing the option. No option granted under the Plan will be
exercisable after the expiration of ten (10) years from the date the option was
granted.

             (2) EXERCISE. After any option granted under the Plan becomes
exercisable, it may be exercised by notice to the Corporation at any time prior
to the termination of such option. Except as authorized by the Committee in
accordance with Section VII, the option price for the number of shares for which
the option is exercised will become immediately due and payable upon exercise.

             (3) PAYMENT. The option price will be payable in full in cash
(including cash equivalents); provided, however, that the Committee may, either
at the time the option is granted or at the time the option is exercised and
subject to such limitations as the Committee may determine, authorize payment of
all or a portion of the option price in one or a combination of the following
alternative forms:

                 (i)   a promissory note authorized pursuant to Section VII; or

                 (ii)  delivery of a properly-executed exercise notice, together
                       with irrevocable instructions to a Corporation-designated
                       broker to promptly deliver to the Corporation the amount
                       of sale or loan proceeds to pay the option price for the
                       purchased shares; or

                 (iii) full payment in shares of Common Stock valued at Fair
                       Market Value on the exercise date and held for the
                       requisite period to avoid a charge to the Corporation's
                       earnings.

         (c) TERMINATION OF EMPLOYMENT. The Committee will have complete
discretion to determine and set forth in each option agreement whether the
option will continue to be exercisable, and the terms of such exercise, on and
after the date that an optionee ceases to be employed by, or to provide services
to, the Corporation or its subsidiaries. Included within such discretion shall
be the authority of the Committee, exercisable either at the time the option is
granted or at any time while the option remains outstanding, to permit one or
more options held by the optionee to be exercised, during the limited period of
exercisability following the optionee's cessation of employment or service, not
only with respect to the number of shares in which the optionee is at that time
vested but also with respect to one or more subsequent installments of
purchasable shares in which the optionee would otherwise have vested had the
optionee continued in employment or service. The Committee will also have
complete discretion, exercisable at any time while the option remains
outstanding, to extend the period for which that

                                       4
<PAGE>

option is to remain exercisable following the optionee's cessation of employment
or service, but in no event may such period be extended beyond the specified
expiration date of the option term.

         (d) INCENTIVE OPTIONS. Options granted under the Plan that are intended
to be Incentive Options will be subject to the following additional terms:

             (1) DOLLAR LIMITATION. To the extent that the aggregate Fair Market
Value (determined as of the respective date or dates of grant) of shares with
respect to which options that would otherwise be Incentive Options become
exercisable for the first time by any individual during any calendar year under
the Plan (or any other plan of the Corporation, a parent or subsidiary
corporation or predecessor thereof) exceeds the sum of $100,000 (or such greater
amount as may be permitted under the Internal Revenue Code), whether by reason
of acceleration or otherwise, such options will not be treated as Incentive
Options. In making such determination, options will be taken into account in the
order in which they were granted. To the extent the $100,000 limitation on the
initial exercisability of Incentive Options would otherwise be exceeded in any
calendar year, the option or options shall nevertheless become exercisable in
that calendar year for the excess number of shares as nonstatutory options.

             (2) 10% SHAREHOLDER. If any employee to whom an Incentive Option is
to be granted pursuant to the provisions of the Plan is, on the date of grant,
the owner of stock (determined with application of the ownership attribution
rules of Section 424(d) of the Internal Revenue Code) possessing more than ten
percent (10%) of the total combined voting power of all classes of stock of his
or her employer corporation or of its parent or subsidiary corporation ("10%
Shareholder"), then the following special provisions will apply to the option
granted to such individual:

                   (i)  The option price per share of the stock subject to such
                        Incentive Option will not be less than one hundred ten
                        percent (110%) of the Fair Market Value of the option
                        shares on the date of grant; and

                   (ii) The option will not have a term in excess of five (5)
                        years from the date of grant.

             (3) PARENT AND SUBSIDIARY. For purposes of this Section V(d)
"parent corporation" and "subsidiary corporation" will have the meaning
attributed to those terms as they are used in Section 424 of the Internal
Revenue Code.

         (e) WITHHOLDING.

             (1) OBLIGATION. The Corporation's obligation to deliver stock
certificates upon the exercise of an option will be subject to the option
holder's satisfaction of all applicable federal, state and local income and
employment tax withholding requirements.

             (2) PAYMENT. The Committee may, in its discretion and upon such
terms and conditions as it may deem appropriate (including the applicable
safe-harbor provisions of SEC Rule 16b-3 or any successor rule or regulation)
provide any or all holders of outstanding option grants under the Plan with the
election to have the Corporation withhold, from the shares of

                                       5
<PAGE>

Common Stock otherwise issuable upon the exercise of such options, a portion of
such shares with an aggregate Fair Market Value equal to the designated
percentage (up to 100% as specified by the option holder) of the federal and
state income and employment taxes ("Taxes") incurred in connection with the
acquisition of such shares. In lieu of such direct withholding, one or more
optionees may also be granted the right to deliver previously-acquired shares of
Common Stock to the Corporation in satisfaction of such Taxes. The withheld or
delivered shares shall be valued at the Fair Market Value on the applicable
determination date for such Taxes or such other date required by the applicable
safe-harbor provisions of SEC Rule 16b-3.

         (f) REPURCHASE RIGHTS. The Committee may, in its discretion, establish
as a term of one or more options that the Corporation (or its assigns) will have
the right, exercisable upon the optionee's termination of employment with, or
cessation of service to, the Corporation and its subsidiaries, to repurchase at
the original option price any or all of the shares of Common Stock acquired by
such optionee upon exercise of the option. Any such repurchase right will be
exercisable by the Corporation (or its assigns) upon such terms (including
provisions for the expiration of such right in one or more installments) as the
Committee may specify in the instrument evidencing such right.

         (g) SHAREHOLDER RIGHTS. An option holder shall have no shareholder
rights with respect to any shares covered by the option until such individual
shall have exercised the option, paid the option price and satisfied all other
conditions precedent to the issuance of the stock certificates for the purchased
shares.

VI.      AUTOMATIC OPTION GRANTS TO DIRECTORS.

         (a) GRANTS. Each non-employee member of the Board shall automatically
be granted nonstatutory options ("Automatic Option Grants") to purchase the
number of shares of Common Stock indicated below (subject to adjustment under
Section IV(c) of this Plan) on the dates and pursuant to the terms and
conditions set forth below. Such terms and conditions have been revised
effective February 22, 1994, but such revisions shall not affect any outstanding
options granted under this Section VI prior to such date. However, all option
grants made pursuant to the revised provisions of this Section VI as effective
February 22, 1994 shall not become exercisable in whole or in part unless those
revisions are approved by the Corporation's shareholders at the 1994 Annual
Meeting. If such shareholder approval is not obtained, then the provisions of
this Section VI as last approved by the shareholders shall automatically be
reinstated and continue to govern all subsequent Automatic Option Grants made
under the Plan.

             (1) INITIAL IPO GRANTS. Each individual who was a non-employee
Board member on the IPO Date received at that time an Automatic Option Grant to
purchase 5,000 shares of Common Stock.

             (2) OCTOBER 28, 1992 GRANTS. Each individual who was serving as a
non-employee Board member on October 28, 1992 was on that date granted an
Automatic Option Grant to purchase an additional 1,000 shares of Common Stock.

                                       6
<PAGE>

             (3) NEW DIRECTORS PRIOR TO FEBRUARY 22, 1994. Each person who was
first elected or appointed as a non-employee member of the Board after October
28, 1992 but prior to February 22, 1994 received, on the effective date of such
initial election or appointment, an Automatic Option Grant to purchase 5,000
shares of Common Stock.

             (4) NEW DIRECTORS AFTER FEBRUARY 21, 1994. Each person who is first
elected or appointed as a non-employee member of the Board on or after February
22, 1994 shall receive, on the effective date of such initial election or
appointment, an Automatic Option Grant to purchase 10,000 shares of Common
Stock.

             (5) SPECIAL GRANT. Each individual who is re-elected as a
non-employee Board member at the 1994 Annual Shareholders Meeting shall receive
at that time an Automatic Option Grant to purchase an additional 5,000 shares of
Common Stock, provided the February 22, 1994 amendment to the Plan is approved
by the shareholders at the 1994 Annual Meeting.

             (6) CONTINUING DIRECTORS. On the last business day of the second
quarter (the "Automatic Grant Date") of each fiscal year of the Corporation
beginning after October 28, 1992, each individual who is at that time serving as
a non-employee member of the Board will receive an Automatic Option Grant to
purchase an additional 2,000 shares2 of Common Stock. However, an individual who
is first elected or appointed as a non-employee Board member after October 28,
1992 shall not receive his or her first Automatic Option Grant for 2,000 shares
under this subparagraph (6) until the last business day of the second quarter of
the fiscal year immediately following the fiscal year of his or her initial
election or appointment to the Board.

         (b) TERMS. The terms applicable to each Automatic Option Grant shall be
as follows:

             (1) PRICE. The option price per share will be equal to one hundred
percent (100%) of the Fair Market Value of one share of Common Stock on the date
of grant.

             (2) TERM. Each Automatic Option Grant shall have a maximum term of
ten (10) years, measured from the date of grant.

             (3) VESTING. Subject to paragraphs (4) and (5) below, each
Automatic Option Grant shall become exercisable as to twenty-five percent (25%)
of the option shares on the last business day of the fiscal quarter immediately
following the date of grant and as to an additional twenty-five percent (25%) of
the option shares on the last business day of each of the next three (3) fiscal
quarters thereafter, provided the optionee continues to serve as a Board member.

             (4) CESSATION. The option will terminate three (3) months (twelve
(12) months in the case of cessation by reason of disability or death) after the
optionee ceases to serve as a Board member unless the option would terminate
sooner under paragraph (2) above. In the case

                                       7
----------

(2)  Prior to October 28, 1992 amendment to Section VI, each periodic option
     grant was for 1,000 shares of Common Stock.

<PAGE>

of death, the option may be exercised within the applicable period by the estate
or heirs of the optionee.

             (5) ACCELERATION. The options will be subject to the acceleration
provisions contained in Section X(a) of this Plan.

             (6) PAYMENT. Upon exercise of the option, the option price for the
purchased shares will become payable immediately in cash, in shares of Common
Stock of the Corporation that the optionee has held for at least six (6) months,
or by delivery of a properly-executed exercise notice, together with irrevocable
instructions to a Corporation-designated broker to promptly deliver to the
Corporation the amount of sale or loan proceeds to pay the option price for the
purchased shares.

VII.     LOANS AND INSTALLMENT PAYMENTS.

         In order to assist an optionee (including an employee who is an officer
or member of the Board) in the acquisition of shares pursuant to an option
granted under the Plan (other than pursuant to the Automatic Option Grant
provisions of this Plan), the Committee may authorize, at either the time of the
grant of an option or the time of the acquisition of shares under the option,
(i) the extension of a loan to the optionee by the Corporation, (ii) the payment
by the optionee of the option price for the purchased option shares in
installments, or (iii) the guarantee by the Corporation of a loan obtained by
the optionee from a third party. The terms of any loans, guarantees or
installment payments, including the interest rate and terms of repayment, will
be subject to the discretion of the Committee. Loans, installment payments and
guarantees may be granted without security, but the maximum credit available to
the optionee shall be limited to the option price of the purchased option shares
(less the par value of such shares) plus the maximum federal and state income
and employment tax liability that may be incurred in connection with the
acquisition.

VIII.    ASSIGNABILITY.

         No option or stock appreciation right granted under the Plan is
assignable or transferable by the optionee other than by will or by the laws of
descent and distribution, and during the lifetime of the optionee the granted
option or stock appreciation right may be exercised only by the optionee.

IX.      CANCELLATION AND NEW GRANT OF OPTIONS.

         The Committee will have the authority to effect, at any time and from
time to time, with the consent of the affected option holders, the cancellation
of any or all outstanding options under the Plan (other than options granted
under the Automatic Option Grant provisions of this Plan) and to grant in
substitution therefor new options under the Plan covering the same or different
numbers of shares, but with an option price per share not less than eighty-five
percent (85%) of the Fair Market Value of the option shares on the new grant
date or, in the case of an Incentive Option, one hundred percent (100%) of such
Fair Market Value on the new grant date (or, in the case of an Incentive Option
granted to a 10% Shareholder, one hundred ten percent

                                       8
<PAGE>

(110%) of such Fair Market Value). The Committee shall not effect a cancellation
and substitution grant as described in the foregoing sentence without the prior
approval of the shareholders of the Corporation.

X.       ACCELERATION AND TERMINATION OF OPTIONS.

         (a) ACCELERATION. In the event of one or more of the following
shareholder-approved transactions ("Corporate Transactions"):

             (1) a merger or acquisition in which the Corporation is not the
surviving entity, except for a transaction the principal purpose of which is to
change the State of the Corporation's incorporation,

             (2) the sale, transfer or other disposition of all or substantially
all of the assets or outstanding capital stock of the Corporation, or

             (3) any reverse merger in which the Corporation is the surviving
entity but in which all of the Corporation's outstanding voting stock is
transferred to the acquiring entity or its wholly-owned subsidiary,

then each option outstanding under the Plan will become exercisable, immediately
prior to the consummation of such Corporate Transaction, with respect to the
full number of shares of Common Stock at the time subject to that option and may
be exercised for any or all of those shares as fully-vested shares. Immediately
following the consummation of the Corporate Transaction, all outstanding options
will terminate and cease to be exercisable, except to the extent assumed by the
successor corporation or parent thereof.

         (b) ADJUSTMENTS TO SHARES. Each outstanding option which is assumed in
connection with the Corporate Transaction or is otherwise to continue in effect
will be appropriately adjusted, immediately after such Corporate Transaction, to
apply and pertain to the number and class of securities which would have been
issuable, in consummation of such Corporate Transaction, to an actual holder of
the same number of shares of Common Stock subject to such option immediately
prior to such Corporate Transaction. Appropriate adjustments will also be made
to the option price payable per share, provided the aggregate option price
payable for such securities will remain the same. In addition, the class and
number of securities available for issuance under the Plan on both an aggregate
and per participant basis following the consummation of the Corporate
Transaction will be appropriately adjusted.

         (c) CORPORATE STRUCTURE. The grant of options under this Plan will in
no way affect the right of the Corporation to adjust, reclassify, reorganize, or
otherwise change its capital or business structure or to merge, consolidate,
dissolve, liquidate or sell or transfer all or any part of its business or
assets.

                                       9
<PAGE>

XI.      FAIR MARKET VALUE.

         For all valuation purposes under the Plan, the Fair Market Value of a
share of Common Stock (rounded upwards to the nearest whole cent) on any
relevant date will be determined in accordance with the following provisions:

         (a) If the Common Stock is not at the time listed or admitted to
trading on any national securities exchange, but is traded on the Nasdaq
National Market, the Fair Market Value will be the closing selling price per
share of Common Stock on the trading day immediately preceding the date in
question, as such price is reported by the National Association of Securities
Dealers, Inc. through the Nasdaq National Market or any successor system.

         (b) If the Common Stock is at the time listed or admitted to trading on
any national securities exchange, then the Fair Market Value will be the closing
selling price per share of Common Stock on the trading day immediately preceding
the date in question on the securities exchange that serves as the primary
market for the Common Stock, as such price is officially quoted on such
exchange.

         (c) If the Common Stock is at the time neither listed nor admitted to
trading on any national securities exchange nor traded on the Nasdaq National
Market, then the Fair Market Value will be determined by the Committee after
taking into account such factors as the Committee deems appropriate.

XII.     SURRENDER OR CANCELLATION OF OPTIONS FOR CASH OR STOCK.

         (a) If and only if the Committee, in its discretion, elects to
implement an option surrender program under the Plan, one or more option holders
may, upon such terms as the Committee may establish at the time of the option
grant or at any time thereafter, be granted the right to surrender all or part
of an unexercised option in exchange for a distribution equal in amount to the
excess of (i) the Fair Market Value (on the option surrender date) of the shares
for which the surrendered option or portion thereof is at the time exercisable
over (ii) the aggregate option price payable for such shares. The distribution
to which an option holder becomes entitled under this Section XII may be made in
shares of Common Stock, valued at Fair Market Value on the option surrender
date, in cash, or partly in shares and partly in cash, as the Committee, in its
sole discretion, deems appropriate. The option surrender provisions of this
Section XII will not apply to options granted pursuant to the Automatic Option
Grant provisions of this Plan.

         (b) One or more officers of the Corporation subject to the short-swing
profit restrictions of the Federal securities laws may, in the Plan
Administrator's sole discretion, be granted limited stock appreciation rights in
tandem with their outstanding options under the Plan. Upon the occurrence of a
Hostile Take-Over effected at any time when the Corporation's outstanding Common
Stock is registered under Section 12(g) of the 1934 Act, each outstanding option
with such a limited stock appreciation right in effect for at least six (6)
months shall automatically be cancelled, and the officer shall in return be
entitled to a cash distribution from the Corporation in an amount equal to the
excess of (i) the Take-Over Price of the shares of Common Stock at the time
subject to the cancelled option (whether or not the option is otherwise

                                       10
<PAGE>

at the time exercisable for such shares) over (ii) the aggregate option price
payable for such shares. The cash distribution payable upon such cancellation
shall be made within five (5) days following the consummation of the Hostile
Take-Over. Neither the approval of the Committee nor the consent of the Board
shall be required in connection with such option cancellation and cash
distribution.

         (c) For purposes of subparagraph (b) above, the following definitions
shall be in effect:

             A Hostile Take-Over shall be deemed to occur in the event (i) any
         person or related group of persons (other than the Corporation or a
         person that directly or indirectly controls, is controlled by, or is
         under common control with, the Corporation) directly or indirectly
         acquires beneficial ownership (within the meaning of Rule 13d-3 of the
         1934 Act) of securities possessing more than fifty percent (50%) of the
         total combined voting power of the Corporation's outstanding securities
         pursuant to a tender or exchange offer made directly to the
         Corporation's shareholders which the Board does not recommend such
         shareholders to accept and (ii) more than fifty percent (50%) of the
         securities so acquired in such tender or exchange offer are accepted
         from holders other than the Corporation's officers and directors
         subject to Section 16(b) of the 1934 Act.

             The Take-Over Price per share shall be deemed to be equal to the
         greater of (a) the Fair Market Value per share of Common Stock on the
         date of the option cancellation or (b) the highest reported price per
         share of Common Stock paid in effecting such Hostile Take-Over.
         However, if the cancelled option is an Incentive Option, the Take-Over
         Price shall not exceed the clause (a) price per share.

         (d) The shares of Common Stock subject to any option surrendered or
cancelled for an appreciation distribution pursuant to this Section XII shall
not be available for subsequent issuance under the Plan.

XIII.    EFFECTIVE DATE AND TERM.

         (a) EFFECTIVE DATE. The Plan was originally adopted by the Board
effective on September 27, 1991 and approved by the shareholders on September
30, 1991. The Plan was restated on March 13, 1992 to increase the number of
shares issuable thereunder by 50,000 shares and to revise the Corporate
Transaction provisions, and such restated Plan was approved by the Corporation's
shareholders on May 27, 1992. The Board again amended the Plan, effective
October 27, 1992, to revise the Automatic Option Grant program for non-employee
Board members so as to increase the number of shares subject to the periodic
option grants made to continuing Board members and to effect the changes
indicated in subparagraph (b) below, and the Board adopted a restatement of the
Plan on March 9, 1993 to increase the number of shares of Common Stock issuable
thereunder by 350,000 shares. Both the October 27, 1992 amendment and the March
9, 1993 restatement were approved by the shareholders on June 8, 1993. The Board
again amended the Plan on September 14, 1993 to increase the number of shares
issuable thereunder by 200,000 shares. On February 22, 1994, the Board restated
the Plan to (i) increase

                                       11
<PAGE>

the number of shares of Common Stock issuable under the Plan by an additional
300,000 shares, (ii) impose a 500,000-share limit on the maximum number of
shares of Common Stock for which any one participant may be granted stock
options and separately exercisable stock appreciation rights under the Plan
after December 31, 1993 and (iii) revise the Automatic Option Grant provisions
of Section VI in the manner indicated therein. The September 14, 1993 amendment
and the February 22, 1994 restatement were approved by the shareholders at the
1994 Annual Meeting. On March 11, 1996, the Board adopted another amendment of
the Plan which increased the number of shares of Common Stock issuable
thereunder by an additional 250,000 shares. The 1996 amendment was approved by
the shareholders at the 1996 Annual Meeting. On April 24, 2000, the Board
adopted another amendment of the Plan which increased the number of shares of
Common Stock issuable thereunder by an additional 1,000,000 shares. The 2000
amendment was approved by the Shareholders at the 2000 Annual Meeting held on
June 21, 2000. On April 18, 2002, the Board adopted another amendment of the
Plan which increased the number of shares of Common Stock issuable thereunder by
an additional 750,000 shares. The 2002 amendment was approved by the
Shareholders at the 2002 Annual Meeting held on June 19, 2002.

         (b) RULE 16B-3 AMENDMENTS. On October 27, 1992, the Board amended the
March 13, 1992 restatement of the Plan in order to bring its provisions into
conformity with the revisions to Rule 16(b)-3 of the Securities and Exchange
Commission governing the treatment, for the purposes of the short-swing
liability provisions of the Federal securities laws, of certain transactions
effected under employee stock plans such as the Plan, and the Plan shall
accordingly become subject to such Rule 16b-3 revisions effective as of October
27, 1992.

         (c) RESTATEMENTS. Each option issued and outstanding under the Plan at
the time of the adoption of the March 13, 1992 restatement was automatically
amended to incorporate the terms of the revised provisions of Section X of the
Plan applicable to Corporate Transactions. Except as so modified, nothing in the
March 13, 1992 restatement shall be deemed to affect or otherwise modify the
rights or obligations of the holders of such options with respect to their
acquisition of shares of Common Stock thereunder. The revisions to the Plan
effected by the October 27, 1992 restatement shall apply only to stock options
and stock appreciation rights granted under the Plan from and after the October
27, 1992 effective date. All stock options and stock appreciation rights which
were issued and outstanding under the Plan immediately prior to such effective
date shall continue to be governed by the terms and conditions of the Plan (and
the instrument evidencing each such option or stock appreciation right) as in
effect on the date each such option or stock appreciation right was previously
granted, and none of the October 27, 1992 revisions to the Plan shall affect or
otherwise modify the rights or obligations of the holders of such options or
stock appreciation rights with respect to the acquisition of shares of Common
Stock under those options or the exercise of their stock appreciation rights.
The revisions to the Plan effected by the February 22, 1994 amendment shall
apply only to stock options and stock appreciation rights granted under the Plan
from and after the February 22, 1994 effective date. All stock options and stock
appreciation rights which were issued and outstanding under the Plan immediately
prior to such effective date shall continue to be governed by the terms and
conditions of the Plan (and the instrument evidencing each such option or stock
appreciation right) as in effect on the date each such option or stock
appreciation right was previously granted, and none of the February 22, 1994
revisions to the Plan shall affect or otherwise modify the

                                       12
<PAGE>

rights or obligations of the holders of such options or stock appreciation
rights with respect to the acquisition of shares of Common Stock under those
options or the exercise of their stock appreciation rights. The revisions to the
Plan effected by the March 11, 1996 amendment shall apply only to stock options
and stock appreciation rights granted under the Plan from and after the March
11, 1996 effective date. All stock options and stock appreciation rights which
were issued and outstanding under the Plan immediately prior to such effective
date shall continue to be governed by the terms and conditions of the Plan (and
the instrument evidencing each such option or stock appreciation right) as in
effect on the date each such option or stock appreciation right was previously
granted, and none of the March 11, 1996 revisions to the Plan shall affect or
otherwise modify the rights or obligations of the holders of such options or
stock appreciation rights with respect to the acquisition of shares of Common
Stock under those options or the exercise of their stock appreciation rights.
The revisions to the Plan effected by the April 24, 2000 amendment shall apply
only to stock options and stock appreciation rights granted under the Plan from
and after the April 24, 2000 effective date. All stock options and stock
appreciation rights which were issued and outstanding under the Plan immediately
prior to such effective date shall continue to be governed by the terms and
conditions of the Plan (and the instrument evidencing each such option or stock
appreciation right) as in effect on the date each such option or stock
appreciation right was previously granted, and none of the April 24, 2000
revisions to the Plan shall affect or otherwise modify the rights or obligations
of the holders of such options or stock appreciation rights with respect to the
acquisition of shares of Common Stock under those options or the exercise of
their stock appreciation rights. The revisions to the Plan effected by the April
18, 2002 amendment shall apply only to stock options and stock appreciation
rights granted under the Plan from and after the April 18, 2002 effective date.
All stock options and stock appreciation rights which were issued and
outstanding under the Plan immediately prior to such effective date shall
continue to be governed by the terms and conditions of the Plan (and the
instrument evidencing each such option or stock appreciation right) as in effect
on the date each such option or stock appreciation right was previously granted,
and none of the April 18, 2002 revisions to the Plan shall affect or otherwise
modify the rights or obligations of the holders of such options or stock
appreciation rights with respect to the acquisition of shares of Common Stock
under those options or the exercise of their stock appreciation rights.

         (d) TERM. Unless sooner terminated in accordance with Section X(a) of
the Plan, the Plan will terminate upon the earlier of (i) September 26, 2006 or
(ii) the date on which all shares available for issuance under the Plan shall
have been issued or cancelled pursuant to the exercise, surrender or cash-out of
options granted under the Plan. If the date of termination is determined under
clause (i) above, then options outstanding on such date will thereafter continue
to have force and effect in accordance with the provisions of the instruments
evidencing such options.

         (e) EXCESS GRANTS. Options may be granted under this Plan to purchase
shares of Common Stock in excess of the number of shares then available for
issuance under the Plan, provided (i) an amendment to increase the maximum
number of shares issuable under the Plan is adopted by the Board prior to the
initial grant of any such option and within one year thereafter such amendment
is approved by the shareholders of the Corporation and (ii) each option so
granted is not to become exercisable, in whole or in part, at any time prior to
the obtaining of such shareholder approval.

                                       13
<PAGE>

XIV.     AMENDMENT OR DISCONTINUANCE.

         (a) BOARD. The Board may amend, suspend or discontinue the Plan in
whole or in part at any time; provided, however, that (a) except to the extent
necessary to qualify as Incentive Options any or all options granted under the
Plan that are intended to so qualify, such action may not adversely affect
rights and obligations with respect to options outstanding under the Plan; (b)
the provisions of the Plan concerning the eligibility of non-employee members of
the Board for awards and the amount, price and timing of Automatic Option Grants
under this Plan may not be amended more than once every six months, other than
to comport with changes in the Internal Revenue Code or the rules or regulations
thereunder; and (c) the Board may not, without the approval of the Corporation's
shareholders, (1) materially increase the number of shares of Common Stock
issuable under the Plan or increase the maximum number of shares for which any
one participant may be granted stock options and separately exercisable stock
appreciation rights after December 31, 1993 (unless necessary to effect the
adjustments required under Section IV(c)), (2) materially modify the eligibility
requirements for awards under the Plan, (3) materially increase the benefits
accruing to participants in the Plan or (4) make any other change with respect
to which the Board determines that shareholder approval is required by
applicable law or regulatory standards.

         (b) COMMITTEE. The Committee will have full power and authority to
modify or waive any or all of the terms or restrictions applicable to any
outstanding option, to the extent not inconsistent with the Plan, including
(without limitation) the authority to accelerate the exercisability of one or
more outstanding options under the Plan upon such terms and conditions as the
Committee deems appropriate.

XV.      NO EMPLOYMENT OBLIGATION.

         Nothing contained in the Plan (or in any option granted under this
Plan) shall confer upon any employee, director, consultant or independent
contractor any right to continue in the employ of, or to provide services to,
the Corporation or any affiliate or constitute a contract or agreement of
employment or for the provision of services, or interfere in any way with the
right of the Corporation or an affiliate to reduce such employee's, consultant's
or independent contractor's compensation from the rate in existence at the time
of the granting of an option or to terminate such employee's, consultant's or
independent contractor's employment or services at any time, with or without
cause; but nothing contained in the Plan or in any option granted under this
Plan shall affect any contractual rights of an employee pursuant to a written
employment agreement.

XVI.     USE OF PROCEEDS.

         The cash proceeds received by the Corporation from the issuance of
shares pursuant to options under the Plan will be used for general corporate
purposes.

XVII.    COMPLIANCE.

         No option may be exercised, and the Corporation will not be obligated
to issue stock under any option unless, in the opinion of counsel for the
Corporation, such exercise and

                                       14
<PAGE>

issuance is in compliance with all applicable federal and state securities laws.
As a condition to the grant of any option, or to the issuance of stock under any
option, the Committee may require that the option holder agree to comply with
such provisions of federal and state securities laws as may be applicable to
such grant, or to the sale of stock acquired pursuant to the Plan, and that the
option holder deliver to the Corporation a written agreement, in form and
substance satisfactory to the Corporation and its counsel, implementing such
agreement.

XVIII.   GOVERNING LAW.

         To the extent not otherwise governed by federal law, the Plan and its
implementation will be governed by and construed in accordance with the laws of
the State of Illinois.

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