Button RollOver/RollOut Effects

programming flash
1

Hi in my MC i have the following code



stop(); 
                                             
this.onEnterFrame = function(){
    if(rewind == true){   
        prevFrame();       
    }
}

this.onRollOver = function(){
    rewind = false; 
    play();    
}

this.onRollOut = function(){
    rewind = true;    

this.onRelease = function(){
    getURL("http://www.kirupa.com","_blank");

}

is there any possible way to do a onRelease function outside the MC?
ex.

gotoAndPlay("scene2", frame3);