Exhibit B
JOINT FILING AGREEMENT
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: February 15, 2007
POTOMAC CAPITAL MANAGEMENT LLC
By: /s/ Xxxx X. Xxxxx
------------------------------
Xxxx X. Xxxxx, Managing Member
POTOMAC CAPITAL MANAGEMENT INC.
By: /s/ Xxxx X. Xxxxx
------------------------------
Xxxx X. Xxxxx, President
XXXX X. XXXXX
By: /s/ Xxxx X. Xxxxx
------------------------------
Xxxx X. Xxxxx
