JOINT FILING AGREEMENT
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Exhibit
B
This
Agreement is filed as an exhibit to Schedule 13G being filed by Potomac Capital
Management LLC, Potomac Capital Management Inc., and Xxxx X. Xxxxx
in compliance with Rule 13d-1(k) of the Securities and
Exchange Commission, which requires an agreement in writing indicating that
the
Schedule 13G to which this Agreement is attached is filed on behalf of the
below-named entities, that they are each responsible for the timely filing
of
the Schedule 13G and any amendments thereto and for the completeness and
accuracy of the information concerning such persons contained
therein.
Dated
this 17th
day of September, 2007
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By:
/s/ Xxxx X.
Xxxxxxxx
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Xxxx
X. Xxxxx, Managing Member
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POTOMAC
CAPITAL MANAGEMENT INC.
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By: /s/ Xxxx
X. Xxxxx
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Xxxx
X. Xxxxx, President
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XXXX
X. XXXXX
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By: /s/
Xxxx X. Xxxxx
Xxxx
X. Xxxxx
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POTOMAC
CAPITAL PARTNERS, LP
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By: /s/
Xxxx X. Xxxxx
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Xxxx
X. Xxxxx, Managing Member of the General
Partner
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