You need some kind of "Tampermonkey" for you browser.
Tested on: Chrome-like browser + Tampermonkey
Tampermonkey links: CHROME or FIREFOX
I think you can also use Greasemonkey but it is not tested.
After installing your browser plugin clico on icon and select **Create a new script ** and just copy and paste code from index.js and just save (you can use Ctrl+S to save btw)
Now you can visit chaturbate.com or chaturbate.com/cams-cbplus