var CartView = View.extend({
  
  el: "#cart",
  
  events: {
    "click .summary": "show_summary",
    "click .shipping": "show_shipping",
    "click .payment": "show_payment",
  },
  
  initialize: function(){
    this.summary = new CartSummary ()
    this.payment = new CartPayment ()
    this.shipping = new CartShipping ()
    this.confirm = new CartConfirm ()
    this.thanks = new CartThanks ()
  },

  show: function(){
    document.body.className = "cart"
    this.show_summary()
  },
  
  show_summary: function(){
    this.el.className = "summary"
  },
  
  show_shipping: function(){
    this.el.className = "shipping"
  },
  
  show_payment: function(){
    this.el.className = "payment"
  },

})