[silin]

alpha = 255 - alpha

var mtrx:Array=[	1, 0, 0, 0, 0,
			0, 1, 0, 0, 0,
			0, 0, 1, 0, 0,
			0, 0, 0, -1, 255];
var filter:ColorMatrixFilter = new ColorMatrixFilter(mtrx);
bmd.applyFilter(bmd, bmd.rect, new Point(), filter);