Zoom on website

I have an existing website that needs zoom adding to the existing and future new images, so that customers can view the items in detail. It has a Joomla backend that is used to add images, product details etc. There are approx 100 existing images on the site, but, we need something where the user can insert an image and it also contains the zoom element. We also need a facebook and other link added to the home page. Payment upon completion of project, no milestones, urgent start (today) needed and payment made via freelancer upon completion. But, this is a guaranteed project to start today. thank you.