What part will I need in this infrared circuit?

I need help. I don't know what part to use in this circuit i am making. It is a simple infrared emitter/detector. When one presses the infrared button, the circuit will light up. When someone releases it, the circuit goes back to its normal state. How can I make like a regular tv? By that I mean when... show more I need help. I don't know what part to use in this circuit i am making. It is a simple infrared emitter/detector. When one presses the infrared button, the circuit will light up. When someone releases it, the circuit goes back to its normal state. How can I make like a regular tv? By that I mean when someone presses and then releases the infrared button, the circuit will stay powered and when I press and release it again, it will power off. This will probably involve an integrated circuit.
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