Exhibit 99.1
JOINT FILING AGREEMENT
Pursuant to Rule 13d-1(k)(1)(iii) promulgated under the Securities
Exchange Act of 1934, as amended, the undersigned each agree that the Schedule
13G to which this exhibit is attached is, and any amendments thereto filed by
any of them will be, filed on behalf of each of them.
Dated: May 9, 2006
▇▇▇▇▇▇ INVESTMENT ASSOCIATES LIMITED PARTNERSHIP
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇
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Chief Investment Officer
HEYVESTCO LLC
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇
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▇▇▇▇▇ ▇. ▇▇▇▇▇▇
Treasurer
▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇
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▇▇▇▇▇ ▇. ▇▇▇▇▇▇
Attorney-in-Fact for ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇