[]改变位置后，点击区域不生效了

package
{
import laya.display.Sprite;
import laya.events.Event;
import laya.renders.Render;

public class MoveTest
{
public function MoveTest()
{
Laya.init(600,600);
var sp:Sprite = new Sprite();
sp.autoSize=true;
sp.graphics.drawRect(0,0,100,100,"#ff0000");
sp.on(Event.CLICK,this,onClick);
Laya.stage.addChild(sp);
}

private function onClick(event:Event):void{
Render._mainCanvas.source.style.left = "100px";
Render._mainCanvas.source.style.top = "100px";
trace("onClick");
}


}
}

就这么一段简单的代码，求指点怎么改变位置后不改变点击区域