[flash33]

var clips = ["pop_mc", "pop1_mc", "pop2_mc"];//массив с именами нужных клипов
MovieClip.prototype.onRollOver = roll;
MovieClip.prototype.onRollOut = roll;
function roll() {
	for (var i in clips) {
		if (this._name == clips[i]) {
			this._alpha = this._alpha < 100?100:70;
			break;
		}
	}
}