Js jquerry scroll function

Job ID: 34756462

Budget: €30 – €250 EUR

Hey may I have an offer for following project in JS or jquery.

On the website https://m48.nlc21.de/mfausel/index.html you find right under the video a parralelax element with a woman holding a divide.
The image is a background image with ending 0000.jpg

When paallelax is in viewport and user scrolls x vh down it should change to 0001, 0002, 0003 in a loop
By scrolling up same in other direction
From 0000 to 0003, 0002, 0001, 0000, 0003…

This should be done by changing bg scr, not class
Need it within 24 hours.
Related categories: JavaScript HTML jQuery / Prototype