[hgseib]

mcs = [a_mc, b_mc, c_mc];
mc_swap = Number.MIN_VALUE;
//
for (var i in mcs) {
	mc_swap = Math.max(mc_swap, mcs[i].getDepth());
	mcs[i].onPress = function() {
		this.swapDepths(mc_swap);
		this.startDrag();
	};
	mcs[i].onRelease = stopDrag;
}