private function cdraw(parameter : *) : String
  {
     //note.text = parameter.toString();   
   //return "received from mx: "  + parameter.toString();
        var dir:String = parameter.toString();
        //var fx:Number = 2;
        var dx:Number = 0;
        var dy:Number = 0;
        if (dir == "left") dx = -1;
        if (dir == "right") dx = 1;
        if (dir == "up") dy = -1;
        if (dir == "down") dy = 1;
        dx *= fx; dy *= fx;
        
        item = new Sprite();
        var c:UIComponent = new UIComponent();
        c.addChild(item);
        item.graphics.lineStyle(3, 0x0000FF);
        item.graphics.moveTo(beginX, beginY);
        video.addChild(c);
        beginX += dx; beginY += dy;
        item.graphics.lineTo(beginX, beginY);
        
       //    note.text = parameter.toString() +  " " + dx + " " + dy; 
   
   return "OK";
  }