Mark Dalgleish's bespoke framework is tiny. The images are not, so maybe blame your ISP? Dunno, not guessing, but JS is last on the blame-guess list.

I'm just responding to the accusation as if Javascript is the known culprit. In those cases, chances are the code itself is the problem and not the language. I can code a page that will likely hang the browser but that doesn't mean I don't take the responsibility of the code that I wrote.