Making ball follow a line

[buddylee]

Ok, I have a line that is 800 pixels long. The line is a gradual curve, that gets kinda steep at the end. I want this ball to go along the line. How do I make the ball move to the right, and stay on top of the line. All I have now is...


onClipEvent(enterFrame){
this._x +=35;
}


Now I need to add something to make it follow the line. The instance name of the line is.... "line" without the quotes of course. Ok, go to work guys.
Thanks

[eyezberg]

do you have to script this?
just use a tween and the line on a guide layer..

[buddylee]

I already have one tween going on here, and I didnt wanna have 2. I read earlier that multiple tweens can slow down the animation. I will try to tween it though and see how it works. Can you explain what a guide layer is though?
Thanks