I have a table of items, shipping cost, tax, and total which need to re-calculate if data changes.
item_X_total calculates when item_X_price and item_X_qty are filled in. Works fine.
When radio button #shipping_method is selected, #shipping_charge fills in with amount, but hidden input #ship_type needs value changed to given string.
#total must re-calculate when item price, quantity, or ship method changes.
