I'm looking at the code in tpl_checkout_default trying to figure out the right place add hard code a default discount coupon code and then auto refresh the page to redeem the coupon without the customer even noticing?

Using the storewide sale with the MSRP and MAP mods creates 2 sets of discount displays on every product price - the msrp discount and then the sale discount. I think I can change this in the function_price script, I changed it to account for the same thing happening with specials, but would prefer to use the discount route so I can track the efficacy of our marketing campaigns.

Any help would be much appreciated.

Matt