[olexandr]

var x:Number = 0;
var y:Number = 0;
var h:Number = 0;
 
for (var i:Number = 0; i < 15; i++) {
    var _mc:MovieClip = _root.attachMovie('skinMC', 'mc_' + i, i);
    _mc.gotoAndStop(i % 2 + 1);
 
    _mc._width = 100 + Math.random() * 100;
    _mc._height = 50 + Math.random() * 50;
 
    if (x + _mc._width > Stage.width) {
        x = 0;
        y = h;
    }
 
    _mc._x = x;
    _mc._y = y;
 
    x += _mc._width;
    h = Math.max(h, _mc._y + _mc._height);
}