Need Help Setting Password

programming flash
1

I have a movie botton and I need to set a password for the click even. This is the code I have wihtout the password:

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.cs.utsa.edu/~achatur/SPRING06.html”);
}

What do I need to add to set password?