gratuity and tip

I have seen several ask the question, but I have not found a viable solution.

I would like to ad a gratuity or tip function to my ZC install.

I thought about a percentage cart item, but that is not possible as far as I can tell.

I thought about a $1 item and then instructing the buyers to add quantities, but that can be confusing and will most likely result in gratuities being shorted.

Anyone have any thoughts on how to set this up.

Thanks
Joe

I added a tip capability to a client's takeout site a few months ago, and it seems to work well. I did it by creating a new order_total module (ot_tip), adding a field for the tip on the checkout_payment page, and in the header_php.php file of the checkout_confirmation page the customer-entered value for the tip was stored as a session variable that is picked up and used by the ot_tip order total module. The sort order for the tip module was set so it gets added after the subtotal and tax...

Neville,

Do you mind sharing the code? or do you have a module to do this?

Thanks for your time! BBaggett

I found the tip/gratuity in the free add-on software. Thanks bunyip, it works beautifully! I have however a question related to that: how do you move the text 'add tip?" and the related input box so they are under the sub-total? (I'm using the template Barebones - if that makes any difference - ) I found out what to modify thanks to firebug, but when I made the changes, it also changed the address boxes placement on the edit address page. I probably don't know how to name (or place?) the specific stylesheet correctly. Any help greatly appriciated.