/**
  * Change Shipping
  *
  * Used when the shopper selects to change the shipping method
  * for their order.  It will show a dropdown with shipping methods
  * for the user to choose while at the same time disabling their
  * ability to complete the order.  It will also show a message
  * saying that they can't complete the order until they've selected
  * a shipping method.
  *
  * @author Matt James <matt@sephone.com>
  * @param  void
  * @return void
  */
function changeShipping(){
	Element.removeClassName('shipping_method', 'hidden');
	Element.addClassName('current_shipping_method', 'hidden');
	Element.removeClassName('complete_order_disabled', 'hidden');
	Element.addClassName('complete_order_enabled', 'hidden');
}

/**
  * Change Coupon
  *
  * Displays an input box for new coupon entry.
  *
  * @author Justin Russell <justin@sephone.com>
  * @return void
  */
function changeCoupon(){
	Element.removeClassName('new_coupon', 'hidden');
	Element.addClassName('add_coupon', 'hidden');
}