Вот чтобы оправдать сортировку:

Код:
var parts:Array = new Array();
for (var p in this ) if(typeof(this[p]) == "movieclip") parts.push( this[p] );
//trace(parts);
function findNearest(){
var arr:Array = new Array();
for(var i=0;i<parts.length;i++){
var mc:MovieClip = parts[i];
var dx:Number = mc._x-_xmouse;
var dy:Number = mc._y-_ymouse;
var d2:Number = (dx*dx +dy*dy);
arr.push({ d:d2, mc:mc });
}
arr.sortOn('d', Array.NUMERIC);
var nearest:MovieClip = arr[0].mc;
arr.reverse();
for(i=0;i<arr.length;i++){
var mc = arr[i].mc;
mc._xscale = mc._yscale = 100 + 20*i;
mc.swapDepths( 1000 + i);
}
nearest.play();
}
onEnterFrame = findNearest;