$(document).ready(function(){
  activate();
});

function activate()
{
  $("#cartTbl img").click(function(){
    var amount = $(this).parent().find("p[name=amount]").text();
    if($(this).attr("name")=='minus')
    {
      amount = parseInt(amount) - 1;
    }
    else if($(this).attr("name")=='plus')
    {
      amount = parseInt(amount) + 1;
    }
    else if($(this).attr("name")=='delete')
    {
      amount = 0;
    }
    else
    {
      return;
    }
    var id = $(this).parent().parent().attr("name");
    var next = $("#next").val();
    if(next=='1')
    {
      rt = false;
    }
    else
    {
      rt = true;
    }
    $.ajax({
      url: '/shop/cart/items',
      type: 'GET',
      dataType: 'html',
      data: 'item_id=' + id + '&num=' + amount + '&rt=' + rt,
      timeout: 1000,
      error: function(){
        alert('変更に失敗しました。もう一度お試しください。');
      },
      success: function(html){
        $("#cartDou").html(html);
        activate();
      }
    });
  });
}