A bookmarklet that floods the page with ants I tried to use failed to work

I was looking around to find some bookmarklets that would waste my time, and I came across this cool ants bookmarklet from here:

https://www.cs.huji.ac.il/~irush/projects/ants.html

However, when I tried to run it as a bookmarklet, the ants wouldn’t show up. Here is the bookmarklet below for reference:

javascript:document.getElementsByTagName('head')[0].appendChild(document.createElement('script')).setAttribute('src','http://www.cs.huji.ac.il/~irush/scripts/antsbml.js');