AS3 gotoAndStop not working on button, please help!

I’m trying to learn this fancy AS3 jazz and keep getting an error when I do a simple gotoAndStop. Does anyone know what I’m doing wrong?

Code:

skipBtn_mc.buttonMode = true;

skipBtn_mc.addEventListener(MouseEvent.CLICK, skipClick);
skipBtn_mc.addEventListener(MouseEvent.ROLL_OVER, skipOver);
skipBtn_mc.addEventListener(MouseEvent.ROLL_OUT, skipOut);

function skipOver(event:MouseEvent):void
{
skipBtn_mc.gotoAndStop(“over”);
}

function skipOut(event:MouseEvent):void
{
skipBtn_mc.gotoAndStop(“up”);
}

function skipClick(event:MouseEvent):void
{
gotoAndPlay(“small”);
}

Error:

1061: Call to a possibly undefined method gotoAndStop through a reference with static type flash.display:SimpleButton.

1119: Access of possibly undefined property buttonMode through a reference with static type flash.display:SimpleButton.

i had it as an mc, but for some reason changed it in thee proporties box to act as a button. that was dumb. thanks!