Hello Sir,
I have read the project description, and I understand that you need a script that render a small window on the edge of your website, that it will be static and main position even user scrolls the page. This issue is such daily practice of mine. I'm confident to say that I can solve the problem in a day (maybe more if you want more customization).
My name is Duc Nguyen, and I'm a Senior Web Developer with more than 5 years experience, working with jQuery, CSS and HTML. I can start right away if you want and this is the best offer I can provide. Not only I will deliver project with that satisfies all your requiments, I'll deliver project with proper structure, well documented.
Hope to hear from you soon and to work with you.
Best regards.