_currentframe always returns 1

programming flash
1

I have a flash file, and in it is a movieclipbutton. When you roll over the button, the button has to grow in size and change color. This animation is 10 frames long. When you roll out, the button goes back to it’s original size and color, this animation is also 10 frames. But when you roll out of the button before the 10 frames of roll over animation are finished, the movie jumps to the rollout animation, which starts with the button in grown size; so you see a little jump in size. To fix this, I did the following for the onRollOut:


this.btn_1.onRollOut = function() {
    this.gotoAndPlay(45 - this._currentframe);
}

This however, doesn’t work. When I put a trace(this._currentframe) inside, it returns 1. But this isn’t right, it should return something between 10 and 20! I have the .fla file on the internet:

http://mxb.dk/upload/homePage.fla

Could anyone help me out? Thanks! :}