Exhibit 99.1

                      EXHIBIT 99.1 - JOINT FILING AGREEMENT

The undersigned hereby agree that they are filing this statement jointly
pursuant to Rule 13d-1(k)(1). Each of them is responsible for the timely filing
of such Schedule 13G and any amendments thereto, and for the completeness and
accuracy of the information concerning such person contained therein; but none
of them is responsible for the completeness or accuracy of the information
concerning the other persons making the filing, unless such person knows or has
reason to believe that such information is inaccurate.

In accordance with Rule 13d-1(k)(1) promulgated under the Securities and
Exchange Act of 1934, as amended, the undersigned hereby agree to the joint
filing with each other on behalf of each of them to such a statement on Schedule
13G with respect to the common stock beneficially owned by each of them. This
Joint Filing Agreement shall be included as an exhibit to such Schedule 13G.

Dated: March 12, 2010


Bank of America Corporation
Bank of America, N.A.


By: /s/ Angelina L. Richardson
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    Name: Angelina L. Richardson
    Title: Vice President


Blue Ridge Investments, L.L.C.


By: /s/ John Hiebendahl
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    Name: John Hiebendahl
    Title: Vice President and Controller