<PAGE>
EXHIBIT 99(b)
Notice Of Guaranteed Delivery
for
Tender of Shares of Common Stock
of
OnDisplay, Inc.
to
Wheels Acquisition Corp.
A Wholly Owned Subsidiary
of
Vignette Corporation
(not to be used for signature guarantees)
This Notice of Guaranteed Delivery, or a form substantially equivalent
hereto, must be used to accept the Offer (as defined below) if certificates
representing shares of common stock, par value $0.001 per share (the "OnDisplay
Shares"), of OnDisplay, Inc., a Delaware corporation ("OnDisplay"), are not
immediately available, if the procedure for book-entry transfer cannot be
completed prior to the Expiration Date (as defined in the Prospectus dated June
2, 2000 (the "Prospectus"), or if time will not permit all required documents
to reach ChaseMellon Shareholder Services, L.L.C. (the "Exchange Agent") prior
to the Expiration Date. Such form may be delivered by hand, transmitted by
facsimile transmission or mailed to the Exchange Agent. See "The Offer--
Procedure for Tendering" in the Prospectus.
The Exchange Agent for the Offer is:
ChaseMellon Shareholder Services, L.L.C.
By Mail: By Facsimile: By Hand:
ChaseMellon Shareholder (For eligible ChaseMellon Shareholder
Services, L.L.C. institutions only) Services, L.L.C.
P.O. Box 3301 (201) 296-4293 120 Broadway, 13th Floor
South Hackensack, NJ 07606 New York, NY 10271
Confirm Facsimile by Telephone:
(201) 296-4860
(For Confirmation Only)
By Overnight Courier:
ChaseMellon Shareholder Services, L.L.C.
85 Challenger Road
Mail Stop--Reorg
Ridgefield Park, NJ 07660
DELIVERY OF THIS NOTICE OF GUARANTEED DELIVERY TO AN ADDRESS OTHER THAN AS
SET FORTH ABOVE OR TRANSMISSION OF INSTRUCTIONS VIA FACSIMILE NUMBER OTHER THAN
AS SET FORTH ABOVE WILL NOT CONSTITUTE A VALID DELIVERY.
This form is not to be used to guarantee signatures. If a signature on a
Letter of Transmittal is required to be guaranteed by an "Eligible Institution"
under the instructions thereto, such signature guarantee must appear in the
applicable space provided in the signature box on the Letter of Transmittal.
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Ladies and Gentlemen:
The undersigned hereby tenders to Wheels Acquisition Corp. ("Purchaser"), a
Delaware corporation and a wholly-owned subsidiary of Vignette Corporation, a
Delaware corporation ("Parent"), upon the terms and subject to the conditions
set forth in the Prospectus and the related Letter of Transmittal (which,
together with any amendments or supplements thereto, constitute the "Offer"),
receipt of which is hereby acknowledged, the number of OnDisplay Shares set
forth below, pursuant to the guaranteed delivery procedures set forth in "The
Offer--Guaranteed Delivery" in the Prospectus.
Signature(s): ______________________
Address(es): _______________________
Name(s) of Record Holders: _________
Zip Code
____________________________________
Please Type or Print
Area Code and Tel. No.(s):
Number of Shares:
Check box if OnDisplay Shares will
Certificate No(s). (if available) be tendered by book-entry
transfer: [_]
Dated: , 2000
Area Code and Tel. No.(s): _________ Account Number: ____________________
Check box if Shares will be
tendered by book-entry
transfer: [_]
Account Number: ____________________
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GUARANTEE
(Not to be used for signature guarantees)
The undersigned, a participant in the Security Transfer Agents Medallion
Program, guarantees to deliver to the Exchange Agent either certificates
representing the OnDisplay Shares tendered hereby, in proper form for transfer,
or confirmation of book-entry transfer of such OnDisplay Shares into the
Exchange Agent's account at The Depository Trust Company, in each case with
delivery of a properly completed and duly executed Letter of Transmittal (or a
manually signed facsimile thereof), with any required signature guarantees, or
an Agent's Message (as defined in the Prospectus), and any other documents
required by the Letter of Transmittal, within three (3) Nasdaq trading days
after the date hereof.
The Eligible Institution that completes this form must communicate the
guarantee to the Exchange Agent and must deliver the Letter of Transmittal and
certificates for OnDisplay Shares to the Exchange Agent within the time period
shown herein. Failure to do so could result in a financial loss to such
Eligible Institution.
Name of Firm: _____________________________________________________________
Address: __________________________________________________________________
___________________________________________________________________________
Zip Code
Area Code and Tel. No: ____________________________________________________
Authorized Signature: _____________________________________________________
Please Print
Name: _____________________________________________________________________
Title: ____________________________________________________________________
Dated: , 2000
NOTE: DO NOT SEND CERTIFICATES WITH THIS NOTICE OF GUARANTEED DELIVERY.
CERTIFICATES SHOULD BE SENT WITH YOUR LETTER OF TRANSMITTAL.
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