Lol now that is weird! Wow... here's the source code he obfuscated. Very clever

    for(b=i=[X=3772];i--;)b[i]=68*i%9%2;setInterval('for(a=b,b=[h="<pre>"],i=0;i++<X;i%w||(h+="\\n")){for(d=j=0;e=[1,91,w,93][j++];)d+=a[i+e]+a[i-e];h+=".#"[b[i]=3==d|a[i]&2==d]}document.body.innerHTML=h',w=92)