Website banner images - French translation

on our platform we run a Wordpress CMS and combine it with our own tools. Our tools, we need localize.js. On the CMS site we can use Localize but can also do the straight translation.

Questions:
is there a way to have the CMS call the localize.js widget to translate other areas. so when someone selects "French" it also activates localize in other parts of the site?

Also, we have banners - images. We have a french version and english version. When you select to translate, it calls either the french or english banner. Can you link localize to swap these banners in Wordpress?