gistfile1.js

cart = (function(){
  return {
    // windows to update
    windowsToUpdate : function(){
      var windowsToUpdate = [window];
      if (window.opener) windowsToUpdate.push(window.opener);
      return jQuery(windowsToUpdate);
    },

    // start a timer to update the cart icon periodically
    init : function(){
      var me = this;
      clearInterval(this.updater);
      this.updater = setInterval(function(){
                       me.updateCartIcon();
                     }, 200);
    },

    // calculate the total items in the current cart
    totalItems : function(){
      var total = 0;
      jQuery('.product.quantity input').each(function(i, elem){
        total = total + parseInt(elem.value,10);
      });
      return total;
    },

    // update the cart icon on this window and the opener if applicable
    updateCartIcon : function(){
      var totalItems = this.totalItems();
      if (isNaN(totalItems)) return;
      this.windowsToUpdate().each(function(i, win){
        var cartElem = win.jQuery('.header-item.right-divide')[4];
        if (cartElem) {
          cartElem.innerHTML = '<a href="/en/Revlon-Home/Revlon-General/View-Cart.aspx">' + 
          totalItems  + '&nbsp;' +
          '<img src="http://images.revlon.com/%7E/media/Images/Revlon/cart-icon.ashx"' +
          'alt="Cart" height="16" width="20"></a>';
        }
      });
    }
  }
})();

cart.init();