_alpha у MovieClip с несколькими кругами.

[dmitriy_rsl]

function circle(mc:MovieClip, ax, ay, r:Number) {
	with (mc) {
		beginFill(0xFF0000);
		moveTo(ax-r, ay);
		curveTo(ax-r, ay+r, ax, ay+r);
		curveTo(ax+r, ay+r, ax+r, ay);
		curveTo(ax+r, ay-r, ax, ay-r);
		curveTo(ax-r, ay-r, ax-r, ay);
		endFill();
	}
}
var bg:MovieClip = _root.createEmptyMovieClip("bg", _root.getNextHighestDepth());
bg.beginFill(0x0000FF);
bg.moveTo(0, 0);
bg.lineTo(500, 0);
bg.lineTo(500, 200);
bg.lineTo(0, 200);
bg.lineTo(0, 0);
bg.endFill();
bg._alpha = 40;
var ovl = _root.createEmptyMovieClip("ovl", _root.getNextHighestDepth());
circle(ovl, 200, 100, 50);
circle(ovl, 250, 100, 50);
ovl._alpha = 20;