How the hell does this work?

http://stwww.weizmann.ac.il/manor/hachiva_kamutit/game.html
The answer is somewhere here:

nihush=0;
function kesem()
{
nihush=Math.round(Math.random()*26);
windi=new Array("a", "n", "b", "d", "f", "h", "{", "i", "l", "v", "x", "z", "I", "J", "M", "N", "o", "O", "R", "S", "T", "U", "m", "6", "^", "u", "_", "[", "]")
ribua=""
j=1;
for ( i = 99 ; i >= 0 ; i-- )
{
n=Math.round(Math.random()*26);
if ( i%9 == 0 && i < n="nihush;" class="mispar">"+i+""
if ( j%10 == 0 )
ribua+=""
j++
}
ribua+="

"+windi[n]+"

"
sign.innerHTML=ribua
tshuva.innerHTML=""
}
function showAnswer()
{
tshuva.innerHTML=windi[nihush]
}