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                                                                      EXHIBIT 99

                                  UNDERTAKINGS

(a) The undersigned registrant hereby undertakes:

    (1) To file, during any period in which offers or sales are being made, a
        post-effective amendment to this registration statement:

        (i)   To include any prospectus required by section 10(a)(3) of the
              Securities Act of 1933;

        (ii)  To reflect in the prospectus any facts or events arising after the
              effective date of the registration statement (or the most recent
              post-effective amendment thereof) which, individually or in the
              aggregate, represents a fundamental change in the information set
              forth in the registration statement;

        (iii) To include any material information with respect to the plan of
              distribution not previously disclosed in the registration
              statement or any material change to such information in the
              registration statement;

              Provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not
              apply if the registration statement is on Form S-3 or Form S-8 and
              the information required to be included in a post-effective
              amendment by those paragraphs is contained in periodic reports
              filed by the registrant pursuant to section 13 or section 15(d) of
              the Securities Exchange Act of 1934 that are incorporated by
              reference in the registration statement.

    (2) That, for the purpose of determining any liability under the Securities
        Act of 1933, each such post-effective amendment shall be deemed to be a
        new registration statement relating to the securities offered therein,
        and the offering of such securities at that time shall be deemed to be
        the initial bona fide offering thereof.

    (3) To remove from registration by means of a post-effective amendment any
        of the securities being registered which remain unsold at the
        termination of the offering.

(b) The undersigned registrant hereby undertakes that, for purposes of
    determining any liability under the Securities Act of 1933, each filing of
    the registrant's annual report pursuant to section 13(a) or section 15(d) of
    the Securities Exchange Act of 1934 (and, where applicable, each filing of
    an employee benefit plan's annual report pursuant to section 15(d) of the
    Securities Exchange Act of 1934) that is incorporated by reference in the
    registration statement shall be deemed to be a new registration statement
    relating to the securities offered therein, and the offering of such
    securities at that time shall be deemed to be the initial bona fide offering
    thereof.
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                             EXHIBIT 99 (CONTINUED)

(f)  Employee plans on Form S-8.

     (1) The undersigned registrant hereby undertakes to deliver or cause to be
         delivered with the prospectus to each employee to whom the prospectus
         is sent or given a copy of the registrant's annual report to
         stockholders for its last fiscal year, unless such employee otherwise
         has received a copy of such report, in which case the registrant shall
         state in the prospectus that it will promptly furnish, without charge,
         a copy of such report on written request of the employee. If the last
         fiscal year of the registrant has ended within 120 days prior to the
         use of the prospectus, the annual report of the registrant for the
         preceding fiscal year may be so delivered, but within such 120 day
         period the annual report for the last fiscal year will be furnished to
         each such employee.

     (2) The undersigned registrant hereby undertakes to transmit or cause to be
         transmitted to all employees participating in the plan who do not
         otherwise receive such material as stockholders of the registrant, at
         the time and in the manner such material is sent to its stockholders,
         copies of all reports, proxy statements and other communications
         distributed to its stockholders generally.

     (3) Where interests in a plan are registered herewith, the undersigned
         registrant and plan hereby undertake to transmit or cause to be
         transmitted promptly, without charge, to any participant in the plan
         who makes a written request, a copy of the then latest annual report of
         the plan filed pursuant to section 15(d) of the Securities Exchange Act
         of 1934 (Form 11-K). If such report is filed separately on Form 11-K,
         such form shall be delivered upon written request. If such report is
         filed as a part of the registrant's annual report on Form 10-K, that
         entire report (excluding exhibits) shall be delivered upon written
         request. If such report is filed as a part of the registrant's annual
         report to stockholders delivered pursuant to paragraph (1) or (2) of
         this undertaking, additional delivery shall not be required.

        (i)  Insofar as indemnification for liabilities arising under the
             Securities Act of 1933 may be permitted to directors, officers and
             controlling persons of the registrant pursuant to the foregoing
             provisions, or otherwise, the registrant has been advised that in
             the opinion of the Securities and Exchange Commission such
             indemnification is against public policy as expressed in the Act
             and is, therefore, unenforceable. In the event that a claim for
             indemnification against such liabilities (other than the payment by
             the registrant of expenses incurred or paid by a director, officer
             or controlling person of the registrant in the successful defense
             of any action, suit or proceeding) is asserted by such director,
             officer or controlling person in connection with the securities
             being registered, the registrant will, unless in the opinion of its
             counsel the matter has been settled by controlling precedent,
             submit to a court of appropriate jurisdiction the question whether
             such indemnification by it is against public policy as expressed in
             the Act and will be governed by the final adjudication of such
             issue.