Lessee shall not, directly or indirectly, without the prior written consent of Lessor, which consent shall not be unreasonably withheld or delayed, sell, assign ,   hypothecate, or otherwise transfer this Lease or any interest hereunder, or sublet the Premises or any part thereof, or permit the use of the Premises by any party other than Lessee.  Consent to any assignment or sublease shall not be deemed a waiver of the right of Lessor to approve any further assignment or subletting.  Notwithstanding any permitted assignment or subletting, Lessee shall remain liable for the full and complete performance, satisfaction, and compliance with each and every agreement, term, covenant, condition, requirement, provision, and restriction of this Lease, as principal and not as surety or guarantor, and as if no such assignment or subletting had been made.  In the event that Lessee sublets the Premises or any parts thereof, or sells, assigns, or transfers this Lease and at any time receives rent and/or other consideration which exceeds that which Lessee would at that time be obligated to pay to Lessor, Lessee shall pay to Lessor 50% of the gross excess in such rent as such rent is received by Lessee and 50% of any other consideration received by Lessee from such subtenant in connection with such sublease or, in the case of an assignment of this Lease by Lessee, Lessor shall receive 50% of any consideration paid to Lessee by such assignee in connection with such assignment.  In addition, should Lessor agree to an assignment or sublease agreement, Lessee will pay to Lessor on demand a sum equal to all of Lessor's costs, including reasonable attorneys' fees, incurred in connection with such assignment or transfer.