Hi. I'm an experienced web programmer, but I'm new on freelancer.com, so I'd be happy to add a custom Bootstrap 3 slider (Bootstrap 3, is a free, modern framework developed by Twitter) and integrate your js script for $25 and a nice review at the end :)
I work with modern standards (html5, css3, Bootstrap 3, JS libs). It will look modern and up to date.
Please, contact me to discuss any further details. Looking forward to your reply,
Alex