Exhibit B
JOINT FILING AGREEMENT
This Agreement is filed as an exhibit to Schedule 13G/A being filed by
Potomac Capital Management LLC, Potomac Capital Management II, LLC, 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/A 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/A and any amendments thereto and for the completeness and accuracy of the
information concerning such persons contained therein.
Dated: August 20, 2009
POTOMAC CAPITAL MANAGEMENT LLC
By: /s/ Xxxx X. Xxxxx
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Xxxx X. Xxxxx, Managing Member
POTOMAC CAPITAL MANAGEMENT II, LLC
By: /s/ Xxxx X. Xxxxx
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Xxxx X. Xxxxx, Managing Member
XXXX X. XXXXX
By: /s/ Xxxx X. Xxxxx
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Xxxx X. Xxxxx
