                                POWER OF ATTORNEY


         KNOW ALL MEN BY THESE PRESENTS, that Jay Knoll whose signature
appears below constitutes and appoints Ghazaleh Koefod, as his or her
lawful attorney-in-fact and agent, with full power of substitution and
resubstitution, for him or her and in his or her name, place and stead,
in any and all capacities, to sign any Form 3, Forms 4 and Forms 5 and
all amendments thereto and to file the same and other documents
in connection therewith, with the Securities and Exchange Commission, granting
unto such attorney-in-fact and agent full power and authority to do and perform
each and every act and thing requisite and necessary to be done in connection
therewith, as fully to all intents and purposes as she might or could do in
person, hereby ratifying and confirming all that such attorney-in-fact and
agent, or her substitute or substitutes, may lawfully do or cause to be
done by virtue hereof.



Date: June 6, 2006                       By: /s/ Jay Knoll
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                                                Signature


