var tes_array1:Array=[1,2,3,4];
var tes_array2:Array=["a","b","c","d"];
var tes_main_array:Array=[tes_array1,tes_array2,"testes",18];

for (var i:Number=0; i<tes_main_array.length; i++) {

	var _value:String=tes_main_array[i].constructor.toString()

	if (_value=="[class Array]") {
		trace("配列！");
	} else {
		trace("配列じゃないよ");
	}

}