Part 1. We have a wishlist site, which is based on a open source script, which needs an add-on for a fairly simple function, which doesn't require modifying any core code, just a stand alone modal.
Part 2. Then we want you to build a widget letting any seller add the widget to his site, so users can post any product from the sellers site to his wishlist account (back to our wishlist site). Meaning they see a product on the sellers site they like/wish, the click add it to wishlist and a pop out is presented to add it. The widget will grab the products details from the page. The widget should not slow down sellers website.
Please request for additional details, thanks.