Adding multiple currency to SimplecartJs

I have a shopping cart built with simplecat js. I have added email checkout in addition to google checkout and paypal checkout. I have also added javascript to display product items in other currencies. While the google checkout only supports USD & British Pounds, paypal supports multiple currencies. In addition, email checkout should also reflect the correct currency and the amount. I thought about implementing it myself but, I feel that it would be more productive to contract this portion to skilled freelancer.com freelancers who are well versed in javascript & PHP. I believe this can be implemented by modifying the simplecartjs javascript or through PHP. I personally have no preference. This would be a simple project for freelancers who understand javascript and who have worked on simplecartjs as simplecartjs is a very simple .js based shopping cart. This project has two parts. 1. Displaying the items in different currencies. As stated above, this has been done by me already. Now, the basket needs to show purchased items in correct currency as well. So the first half of the project is done already. Feel free to contact me at eonsalt at gmail dot com. Making your bidding here only may not get to my attention as I always seem to get many offers from skilled freelancers. ^^ Thank you & happy coding to everyone!!!