Just learned about javascript

Hi Everyone!

So today I've just learned about using Javascripts (I'm dropping the .js file into the javascripts folder).  I'm not a professional in any of this and wanted to explain my current setup just for context.  We are a very small company (3 employees) and we have a single server running Microsoft Server 2016.  100% of our customer connect to the server via RDP and run a custom application.  We use a program that allows us to create pdf files in their home folder and then we display the pdf file and allow them to print, save or email it and of course page navigation.  The PDF viewer is really locked down (which is what we need).  We are using an open source PDF viewer which allows us to lock all features down that we don't need.  After coming across this javascript stuff today, I want to know if the following is possible using a "starup.js" script file.  Open Acrobat Reader, hide the menu bar (no, file, edit, view, etc), On the toolbar show only the Print button, PageUp, PageDown, # of Pages, ZoomOut, ZoomIn, ZoomValue and then two custom buttons, Button1 and Button2.  I think I can work on the code to program the function of the two custom buttons, but getting them on the toolbar is the main concern.  I really need the reader to be locked down.

Is this possible?

Thanks

Kevin