[udaaff]

var cellSize:Number = 20;
var l:Number = 10;
var m:Number = 20;
 
for (var i:Number = 0; i < l; i++)
{
	var y:Number = i * cellSize;
 
	for (var j:Number = 0; j < m; j++)
	{
		var mc:MovieClip = attachMovie("id", "mc" + i + "_" + j, getNextHighestDepth());
		mc._x = j * cellSize;
		mc._y = y;
	}
}