peguei uma função no site mais não está funcionando

Tenho um simples script onde está o problema:

import HitTest;

trace (HitTest.complexHitTestObject(sl,mclist.mc));

O package tirado de http://www.foxarc.co...article/106.htm

esse package é para detectar colisões sem colidir com a caixa delimitadora

*package /*com.foxarc.display*/ { import flash.display.BitmapData; import flash.display.BlendMode; import flash.display.DisplayObject; import flash.display.Sprite; import flash.geom.ColorTransform; import flash.geom.Matrix; import flash.geom.Point; import flash.geom.Rectangle; public class HitTest { public static function complexHitTestObject( target1:DisplayObject, target2:DisplayObject, accurracy:Number = 1 ):Boolean { return complexIntersectionRectangle( target1, target2, accurracy ).width != 0; } public static function intersectionRectangle( target1:DisplayObject, target2:DisplayObject ):Rectangle { // If either of the items don't have a reference to stage, then they are not in a display list // or if a simple hitTestObject is false, they cannot be intersecting. if( !target1.root || !target2.root || !target1.hitTestObject( target2 ) ) return new Rectangle(); // Get the bounds of each DisplayObject. var bounds1:Rectangle = target1.getBounds( target1.root ); var bounds2:Rectangle = target2.getBounds( target2.root ); // Determine test area boundaries. var intersection:Rectangle = new Rectangle(); intersection.x = Math.max( bounds1.x, bounds2.x ); intersection.y = Math.max( bounds1.y, bounds2.y ); intersection.width = Math.min( ( bounds1.x + bounds1.width ) - intersection.x, ( bounds2.x + bounds2.width ) - intersection.x ); intersection.height = Math.min( ( bounds1.y + bounds1.height ) - intersection.y, ( bounds2.y + bounds2.height ) - intersection.y ); return intersection; } public static function complexIntersectionRectangle( target1:DisplayObject, target2:DisplayObject, accurracy:Number = 1 ):Rectangle { if( accurracy*

O script está bagunçado pois estou com problema com esse editor de post. Para ver o package entre no site. Alguem pode tentar fazer o script funcionar?