function swap(mc1, mc2) {
var tmpX = mc1._x;
var tmpY = mc1._y;
mc1._x = mc2._x;
mc1._y = mc2._y;
mc2._x = tmpX;
mc2._y = tmpY;
}
var maxMc = 4;
var randTime = 10;
while (randTime--) {
swap(this["mc"+(random(maxMc)+1)], this["mc"+(random(maxMc)+1)]);
}
D:)S
