Keep Cart clear cookie at logoff

[abcisme]

I'm using the Keep Cart mod on a 1.3.9 cart. Does anyone know how I can set it so that the cart cookie clears on the logoff page? Once the user has logged in, the items are saved in their user cart, so at logoff, the cookie should clear.

The cart cookie doesn't always clear after order confirmation either, so some users end up merging their last order with their current order and get ticked off.

Any help would be appreciated.

Thanks.

[abcisme]

Of course, as soon as I post, I figured it out.

/includes/classes/observers/class.savecart.php

$zco_notifier->attach($this, array('NOTIFY_HEADER_END_CHECKOUT_CONFIRMATION','NOTIFY_HEADER_START_LOGOFF'));

				case 'NOTIFY_HEADER_END_CHECKOUT_CONFIRMATION':
					setcookie('cart', '', time()-1000,"/",(zen_not_null($current_domain) ? $current_domain : ''));
					setcookie('cartkey', '', time()-1000,"/",(zen_not_null($current_domain) ? $current_domain : ''));
					break;
				case 'NOTIFY_HEADER_START_LOGOFF':
					setcookie('cart', '', time()-1000,"/",(zen_not_null($current_domain) ? $current_domain : ''));
					setcookie('cartkey', '', time()-1000,"/",(zen_not_null($current_domain) ? $current_domain : ''));
					break;