I think this is far from production ready code and this guy just wanted compact code. Perfectly fine for a quick copy/paste demo. Another thought - this could

I think this is far from production ready code and this guy just wanted compact code. Perfectly fine for a quick copy/paste demo. Another thought - this could be the output of his packed code, sort of like what we get when downloading mootools unminified - one big file, but that's not how authors store the code internally.