Showing and hiding overlay

test.coffee

 product_quantity = $('.product-quantity');
      product_quantity.click ->
          current = $(this)
          event.stopPropagation();
          current.parent().find('.items-count-spinner').show();
          current.find('.item-count').focus();
          position = current.position();


          $('.items-count-spinner').css({
            'top' : position.top - 5,
            'left' : position.left - 25,})

      $('body').click ->
        if ($(event.target).parents('.items-count-spinner').length == 0)
          $('.items-count-spinner').hide();