ActionScript 2.0 :: How To Get Sliding Bar To Move And Stop On Clicked Button

I have 6 buttons, and a thin bar.. I am doing an effect whereby when I click on the 6th button the bar will move and stop at the 6 button, and when I click on the 2nd button it will move and stop at the 2nd button.. but I cant stop the bar..

bar = slider
button = btn_1
Each btn script:
on (press) {
slider.yMove = btn_1._y;
}

Bar Script:
onClipEvent (load) {
yMove = _y;
easeSpeed = 5;
} onClipEvent (enterFrame) {
_y += (yMove-_y)/easeSpeed;
}