Edit JavaScript which provides currency conversion and layout(CSS) of it's buttons and price presentation

Job description: Our website has a currency conversion "module", which changes the default pricing in Euros to US Dollars or British pounds. Since we are updating our website's design, the module also needs a new design to go along with it (CSS) and we would also like to make some JavaScript improvements to the script. Current state of the script: The current script can be seen in action at: [login to view URL] It automatically converts the price to Dollars when you are located in the USA and the Pounds when in the UK. The rest of the world shows the default price in Euro's (but this can be overridden by pressing the buttons for the currencies, when a user overrides this a cookie is saved to remember their preference) What we need is: 1. New design for the pricing module to go along with the new website design. 2. The script needs to be made compatible with https/secure content. (e.g. no unsecure content warnings in browsers) 3. The script currently includes the price in multiple lines of code, we'd like to simplify this if possible, so that we only have to edit the price once. 4. Add Microdata and Rich snippets for SEO. If there are any tags that could be used for slot pricing. Please see the attachments for the script and the new website design.