You need to click on the arrow icon or the logo. It's buggy as hell. Click Help then all the windowing system is gone south. I found major bugs after playing with it for 2 minutes. Why hasnn't the author spent at least that amount of time to test it before putting it in the wild? It's mostly javascript btw. So the title of the article is wrong.

"Click Help then all the windowing system is gone south."

That's a fairly faithful emulation, actually...

have to click the login button - works for me in chrome

it doesn't work with chrome I had to use firefox

same here

you may have to press the arrow button