Seperate the testimonial JS from the default JS code. There may be a JS conflict.
Check for the js folder located at theme/yourtheme/js
Try creating a seperate js file instead of editing in core js file
Seperate the testimonial JS from the default JS code. There may be a JS conflict.
Check for the js folder located at theme/yourtheme/js
Try creating a seperate js file instead of editing in core js file