onLoadInitの中だと変数の扱いがわかんない

class GoodListImg extends GoodList {

	private var originalWidth:Number;

	private var originalHeight:Number;

	private var targetLoad:Object;

	//

	function GoodListImg (b:String, c:String) {
		originalWidth = _root[targetLoad].loadMovie_mc._width;

		originalHeight = _root[targetLoad].loadMovie_mc._height;

		/*

		■ MovieClipLoader

		*/

		var my_mcl:MovieClipLoader = new MovieClipLoader ();

		var oListener:Object = new Object ();

		oListener.onLoadInit = function (target_mc:MovieClip) {

			target_mc._width = 99;

			target_mc._height = 99;

			target_mc._x = -49;

			target_mc._y = -49;

			/*

			ここでoriginalWidthなどのプロパティがとってこれない。なぜ？？

			*/

		};

		my_mcl.addListener (oListener);

		my_mcl.loadClip (b, _root[targetLoad].loadMovie_mc);

	}

	/*

	■ drop_05の不在確認

	*/

	static function get_drop_05 ():Boolean {

		return drop_05;

	}

}