And if what shows with the JS blocked is all that is there, then there does not look to be any reason there should be any JS on this page to begin with.

You have two images, images display fine without JS. Although given their native size they need some css or width=/height= attributes to corral them into size. And a small amount of text (no need for JS to display text) and one form field and a submit button (both handled by basic html forms and posting to a CGI endpoint).