Wire a push-button switch to close a circuit instead of open it?

I bought several pushbutton switches from Radioshack, and I just discovered that pressing the button actually breaks the connection between the two pins, rather than closing the connection. Is there some simple combination of diodes that I could use with such a switch to make it close a circuit, instead of open... show more I bought several pushbutton switches from Radioshack, and I just discovered that pressing the button actually breaks the connection between the two pins, rather than closing the connection.

Is there some simple combination of diodes that I could use with such a switch to make it close a circuit, instead of open it? It seems like it should be possible, but I can't figure it out.
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