Hello,
We are very interested by your project.
We will do this script that will show a pop up with message/image on the time of closing the browser as required
We are based in France and in India. The management team is Indian & French and used to deliver very good quality developments, we have a experienced team of developer and designer for php, mysql, open source, ecommerce, prestashop, cms etc to develop & design best applications. We can provide references on demand.
We will be very pleased to work with you on this project.
Best regards, and thanks in advance for your consideration.
Allwikan team.