Keeping a disabled button disabled after navigating away from the frame

Okay, so… I’m making a VERY basic Jeopardy game, and I need buttons to be disabled after being clicked on once.

Oh, and I’m working in CS3, but I’m using AS 1&2 because that’s what I learned… I have no idea how to use AS 3…

example:
frame 1 has btn11 in it. btn11 when clicked takes the person to frame 2. when done with frame 2, they click on return.

the return button (btnReturn1) has the following AS

on (release) {
gotoAndStop (“Round1”,1)
btn11.enabled=false;
}

the problem is that it works at first - the button disables when I get back to frame 1, but the next time I click a different button then return to frame 1, the first button I disabled isn’t disabled anymore.

can you help me fix my actionscript so that my disabled buttons stay that way no matter how many times I come and go from the frame? or if you have a better way to do it, that’d be great. basically, it’s like the jeopardy screen, and after “songs” for 200 is clicked, I don’t want it to be clickable again at all.