var NN4 = (document.layers) ? 1 : 0;
var IE  = (document.all) ? 1 : 0;
var NN6 = ( !document.all && document.getElementById ) ? 1 : 0;
var id_name="select_quantity";
var id_name_default="select_quantity_default";
var image_shopping="shopping_bag";
var image_button="shopping_button";
var watch_list_button = "watch_list_button";
var watch_list = "watch_list";


//////////////////////////////////////////////////////////////////////////////
// 購入できるCSをプルダウンで選択した場合、カートボタンをアクティブにする
/////////////////////////////////////////////////////////////////////////////
function change_option(index) {
  var obj1 = document.formCart.products_cs_quantity.options;
  var obj2 = document.formCart.products_order_quantity;
  var num = obj1[index].value;

  if(num > products_puantity_per_order){
    num = products_puantity_per_order;
  }
  if(index > 0){
    document.formCart.elements.products_cs_id.value = products_cs_id_array[index - 1];
  } else {
    document.formCart.elements.products_cs_id.value = "";
  }

  if(num > 0){
    obj2.length = 1;
    if(num >= 5){
     for( i = 1; i <= 5; i++) {
      // 大ジャンルの選択値を取得
       obj2.options[i-1] = new Option(i, i);
     }
    }else{
      for( i = 1; i <= num; i++) {
        // 大ジャンルの選択値を取得
        obj2.options[i-1] = new Option(i, i);
      }
    }
				
				$('#image_shopping').show();
				$('#image_shopping_enable').hide();

				$('#select_quantity').show();
				$('#select_quantity_default').hide();
  } 
		else {
				$('#image_shopping').hide();
				$('#image_shopping_enable').show();
				
				$('#select_quantity').hide();
				$('#select_quantity_default').show();

  }

  if(index == 0){
				$('#watch_list').show();
				$('#watch_list_button').hide();
  }
			else{
				$('#watch_list').hide();
				$('#watch_list_button').show();
  }
}

function change_option_default() {
  var obj1 = document.formCart.products_cs_quantity.options;
  var obj2 = document.formCart.products_order_quantity;
  var num = 0;
  var _index = 0;
		
		$('select#products_cs_quantity option').each(function(index){
			if( $(this).attr("id") == "selected" ){
				num = $(this).attr("value");
				_index = index;
			}																																																						
		});
  if(num > products_puantity_per_order){
    num = products_puantity_per_order;
  }
  if(_index > 0){
    document.formCart.elements.products_cs_id.value = products_cs_id_array[_index - 1];
  } else {
    document.formCart.elements.products_cs_id.value = "";
  }

  if(num > 0){
    obj2.length = 1;
    if(num >= 5){
     for( i = 1; i <= 5; i++) {
      // 大ジャンルの選択値を取得
       obj2.options[i-1] = new Option(i, i);
     }
    }else{
      for( i = 1; i <= num; i++) {
        // 大ジャンルの選択値を取得
        obj2.options[i-1] = new Option(i, i);
      }
    }
				
				$('#image_shopping').show();
				$('#image_shopping_enable').hide();

				$('#select_quantity').show();
				$('#select_quantity_default').hide();
  } 
		else {
				$('#image_shopping').hide();
				$('#image_shopping_enable').show();
				
				$('#select_quantity').hide();
				$('#select_quantity_default').show();

  }

  if(_index == 0){
				$('#watch_list').show();
				$('#watch_list_button').hide();
  }
			else{
				$('#watch_list').hide();
				$('#watch_list_button').show();
  }
}