I've created a webform for a user to order from a catalog. There are five colums (item #, quantity, description, price and total) and 10 rows (repeating first row so the user can order up to 10 items). The item # and description are obviously not factors, but I'd like to have the user enter a quantity and price, and have the script multiply them for a total, then (if possible) add the totals for a sub total, and (if my dreams come true) multiply the subtotal by 8% (sales tax) and display the sub total, tax and grand total.
I've seen this done many times with fixed prices but I can't find how to do it with user completed text fields.
I'm setting up a site for my wife's home business, (I'm 100% amature, but know just enough to really screw things up), and somehow she decided I'd be her IT department.
Any ideas??? Thanks, David