EXHIBIT 1
JOINT FILING AGREEMENT
The undersigned hereby agree to the joint filing of the Amendment No. 2 to the Schedule 13D to which this Agreement is attached.
Dated: March 30, 2007
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DISCOVERY GROUP I, LLC, |
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By |
Michael R. Murphy* |
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Michael R. Murphy |
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Managing Member |
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Daniel J. Donoghue* |
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Daniel J. Donoghue |
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Michael R. Murphy* |
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Michael R. Murphy |
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*By: |
/s/ Robert M. McLennan |
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Robert M. McLennan |
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Attorney-in-Fact for Daniel J. Donoghue |
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Attorney-in-Fact for Michael R. Murphy |