About a button effect

Hello guys, I was wondering if you could help me. I applied the "slide2right" effect on a movieclip and I would like it to stay like that while that option is selected. I mean, when the mouse is over the button it moves to the right. If that's the selected menu, I would like it to stay like that, to the right. Is there any way to do that?

You will need to make sure that selected option is set and also that the value for selected down property is set to the same position as over.