Exhibit 99.1
JOINT FILING UNDERTAKING
The undersigned, being duly authorized thereunto, hereby execute this
agreement as an exhibit to this Schedule 13D to evidence the agreement of the
below-named parties, in accordance with the rules promulgated pursuant to the
Securities Exchange Act of 1934, to file this Schedule jointly on behalf of each
such party.
Dated: August 26, 2002 BERKSHIRE FUND V, LIMITED PARTNERSHIP
By: Fifth Berkshire Associates LLC,
its General Partner
By: /s/ Xxxx X. Xxxxx
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Name: Xxxx X. Xxxxx
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Title: Managing Director
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BERKSHIRE FUND VI, LIMITED PARTNERSHIP
By: Sixth Berkshire Associates LLC,
its General Partner
By: /s/ Xxxx X. Xxxxx
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Name: Xxxx X. Xxxxx
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Title: Managing Director
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BERKSHIRE INVESTORS LLC
By: /s/ Xxxx X. Xxxxx
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Name: Xxxx X. Xxxxx
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Title: Managing Director
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FIFTH BERKSHIRE ASSOCIATES LLC
By: /s/ Xxxx X. Xxxxx
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Name: Xxxx X. Xxxxx
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Title: Managing Director
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SIXTH BERKSHIRE ASSOCIATES LLC
By: /s/ Xxxx X. Xxxxx
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Name: Xxxx X. Xxxxx
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Title: Managing Director
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BERKSHIRE PARTNERS LLC
By: /s/ Xxxx X. Xxxxx
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Name: Xxxx X. Xxxxx
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Title: Managing Director
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