ALterations to SAgepay payment page in PHP

We have a Sagepay payment page on a website, which needs the following alteration to it: The payment page needs a drop down box so the customer can select which currency to pay in- either Euros or British pounds. This is then communicated to the Sagepay server. The coding is in PHP. ## Deliverables 1) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No 3rd party components unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the worker's Worker Legal Agreement). ## Platform php