Pass a vBulletin variable to Javascript?

[Honourable]

Hi

I had a jquery slideshow which is working through js file called preview.js

I have in this js file width & height for the slideshow

and I would like to add a variable in the slideshow that if I from admincp edited the width to specific size then change and if not keep it as a specific size I want to remain

I found this thread but for vb4 any suggestion for vb3?
https://vborg.vbsupport.ru/showthread.php?t=264472

I'm really interesting in this therefore if any one by any chance would help me I will appreciate that

I have attached the jquery js file hope you could add a variable to it as in the thread for vb4 and you will find the width and height in fourth line so just make your edit please and then how to make the code in the global_start hook

waiting...

thank you