Exhibit 99.5
                                                                    ------------

            GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                         NUMBER ON SUBSTITUTE FORM W-9

Guidelines for Determining the Proper Identification Number to Give the Payor -
Social Security numbers have nine digits separated by two hyphens: i.e., 000-00-
0000.  Employer identification numbers have nine digits separated by only one
hyphen: i.e., 00-0000000.  The table below will help determine the name and
number to give the Payor.



--------------------------------------------------------     -----------------------------------------------------------------
For this type of              Give the name and SOCIAL         For this type of account:                 Give the name and
account:                      SECURITY number of -                                                       EMPLOYER IDENTIFICATION
                                                                                                         number of -
--------------------------------------------------------     -----------------------------------------------------------------
                                                                                                
1.  An individual's           The individual                   6.  A valid trust, estate, or             Legal entity (Do not
    account                                                        pension trust                         furnish the identifying
                                                                                                         number of the personal
                                                                                                         representative or trustee
                                                                                                         unless the legal entity
                                                                                                         itself is not designated
                                                                                                         in the account title.) (4)

2.  Two or more               The actual owner of the          7.  Corporate account                     The corporation
    individuals (joint        account or, if combined
    account)                  funds, the first individual
                              on the account (1)

3.  Custodian account         The minor (2)                    8.  Association, club, religious,         The organization
    of a minor (Uniform                                            charitable, educational, or other
    Gift to Minors Act)                                            tax-exempt organization account

4.  a.  The usual             The grantor-trustee (1)          9.  Partnership                           The partnership
        revocable savings
        trust account
        (grantor is also
        trustee)

    b.  So-called trust       The actual owner (1)             10.  A broker or registered nominee       The broker or nominee
        account that is
        not a legal or
        valid trust
        under state law

5.  Sole                      The owner (3)                    11.  Account with the Department          The public entity
    proprietorship                                                  of Agriculture in the name of a
    account                                                         public entity (such as a state or
                                                                    local government, school district
                                                                    or prison) that receives
                                                                    agricultural program payments
--------------------------------------------------------     -----------------------------------------------------------------


(1)  List first and circle the name of the person whose number you furnish. If
     only one person on a joint account has a social security number that
     person's number must be furnished.
(2)  Circle the minor's name and furnish the minor's social security number.
(3)  You must show your individual name. You may also enter your business or
     "doing business as" name. You may use either your social security number
     or, if you have one, your employer identification number.
(4)  List first and circle the name of the legal trust, estate or pension trust.
NOTE: If no name is circled when there is more than one name listed, the number
     will be considered to be that of the first name listed.


            GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                         NUMBER ON SUBSTITUTE FORM W-9

                                    Page 2

Obtaining a Number

If you don't have a taxpayer identification number or you don't know your
number, obtain Form SS-5, Application for a Social Security Number Card, or Form
SS-4, Application for Employer Identification Number, at a local office of the
Social Security Administration or the Internal Revenue Service and apply for a
number.  You may also obtain Form SS-4 by calling the IRS at 1-800-TAX-FORM.

Payees Exempt from Backup Withholding

Payees specifically exempted from backup withholding on ALL payments include the
following:

 .  An organization exempt from tax under section 501(a), or an individual
   retirement account.

 .  The United States or any wholly-owned agency or instrumentality thereof.

 .  A state, the District of Columbia, a possession of the United States, or any
   political subdivision or wholly-owned agency or instrumentality thereof.

 .  A foreign government, a political subdivision of a foreign government, or any
   wholly-owned agency or instrumentality thereof.

 .  An international organization or any wholly-owned agency or instrumentality
   thereof.

Payees specifically exempted from backup withholding on interest and dividend
payments include the following:

 .  A corporation.

 .  A financial institution.

 .  A registered dealer in securities or commodities registered in the U.S., the
   District of Columbia, or a possession of the U.S.

 .  A real estate investment trust.

 .  A common trust fund operated by a bank under section 584(a).

 .  An exempt charitable remainder trust, or a non-exempt trust described in
   section 4947.

 .  An entity registered at all times during the tax year under the Investment
   Company Act of 1940.

 .  A foreign central bank of issue.

 .  A middleman known in the investment community as a nominee or who is listed
   in the most recent publication of the American Society of Corporate
   Secretaries, Inc., Nominee List.

Payments of dividends and patronage dividends not generally subject to backup
withholding include the following:

 .  Payments to nonresident aliens subject to withholding under section 1441.

 .  Payments to partnerships not engaged in a trade or business in the U.S. and
   that have at least one nonresident partner.

 .  Payments of patronage dividends not paid in money.

 .  Payments made by certain foreign organizations.

 .  Section 404(k) payments made by an ESOP.

Payments of interest not generally subject to backup withholding include the
following:

 .  Payments of interest on obligations issued by individuals.  Note: You may be
   subject to backup withholding if this interest is $600 or more and is paid in
   the course of the payer's trade or business and you have not provided your
   correct taxpayer identification number to the payer.

 .  Payments of tax-exempt interest (including exempt-interest dividends under
   section 852).

 .  Payments described in section 6049(b)(5) to non-resident aliens.

 .  Payments on tax-free covenant bonds under section 1451.

 .  Payments made by certain foreign organizations.

Exempt payees described above may file Form W-9 to avoid possible erroneous
backup withholding.  FILE THIS FORM WITH THE PAYER, FURNISH YOUR TAXPAYER
IDENTIFICATION NUMBER, WRITE "EXEMPT" ON THE FACE OF THE FORM, SIGN AND DATE THE
FORM, AND RETURN IT TO THE PAYER.

Certain payments other than interest, dividends, and patronage dividends that
are not subject to information reporting are also not subject to backup
withholding.  For details, see sections 6041, 6041A, 6042, 6044, 6045, 6049,
6050A, 6050N, and their regulations.

Privacy Act Notice.  Section 6109 requires most recipients of dividend,
interest, or other payments to give taxpayer identification numbers to payers
who must report the payments to IRS.  The IRS uses the numbers for
identification purposes and to help verify the accuracy of tax returns.  The IRS
also may provide this information to the Department of Justice for civil and
criminal litigation and to cities, states, and the District of Columbia to carry
out their tax laws.  Payers must be given the numbers whether or not recipients
are required to file tax returns.  Payers must generally withhold 30.5% of
taxable interest, dividend, and certain other payments to a payee who does not
furnish a taxpayer identification number to a payer.  Certain penalties may also
apply.

Penalties

(1) Penalty for Failure to Furnish Taxpayer Identification Number.-If you fail
to furnish your taxpayer identification number to a payer, you are subject to a
penalty of $50 for each such failure unless your failure is due to reasonable
cause and not to willful neglect.

(2) Civil Penalty for False information With Respect to Withholding.-If you make
a false statement with no reasonable basis that results in no backup
withholding, you are subject to a penalty of $500.

(3) Criminal Penalty for Falsifying Information.-Willfully falsifying
certifications or affirmations may subject you to criminal penalties including
fines and/or imprisonment.

FOR ADDITIONAL INFORMATION, CONTACT YOUR TAX CONSULTANT OR THE INTERNAL REVENUE
SERVICE.