<PAGE>
EXHIBIT A
AGREEMENT DATED SEPTEMBER 8, 2000
The undersigned hereby agree that
(i) each of them is individually eligible to use the Schedule 13D
attached hereto:
(ii) the attached Schedule 13D is filed on behalf of each of them;
and
(iii) each of them is responsible for the timely filing of such
Schedule 13D and any amendments thereto, and for the completeness and accuracy
of the information therein concerning him or itself; but none of them is
responsible for the completeness or accuracy of the information concerning the
other persons making the filing, unless he or it knows or has reason to believe
that such information is inaccurate.
CITIGROUP INC.
By: /s/ Joseph B. Wollard
------------------------
Name: Joseph B. Wollard
Title: Assistant Secretary
CITIGROUP HOLDINGS COMPANY
By: /s/ Kenneth Cohen
------------------------
Name: Kenneth Cohen
Title: Assistant Secretary
CITICORP
By: /s/ Joseph B. Wollard
------------------------
Name: Joseph B. Wollard
Title: Assistant Secretary
CITIBANK, N.A.
By: /s/ Joseph B. Wollard
------------------------
Name: Joseph B. Wollard
Title: Assistant Secretary
<PAGE>
Citicorp Banking Corporation
By: /s/ William Wolf
------------------------
Name: William Wolf
Title: Senior Vice President
CITICORP VENTURE CAPITAL, LTD.
By: /s/ Anthony P. Mirra
------------------------
Name: Anthony P. Mirra
Title: Vice President and
Assistant Secretary
COURT SQUARE CAPITAL LIMITED
By: /s/ Anthony P. Mirra
------------------------
Name: Anthony P. Mirra
Title: Vice President and
Assistant Secretary
