Actions to buttons

Hi there,

I`ve got some simple text buttons animating in across the page. Once they are in place I want to be able to click on one and bring up a section of text on the same page.

I`ve turned the text into a movie clip and put it inside the down state of the button. This works when you click on the button but only if I keep the button pressed down.

How do I apply the action to the button to enable me to click it once and have the text remain visible until my next choice.

My ActionScript knowledge is very limited so I would appreciate a more detailed reply.

Thanks

Toner