Code en Java script

Il s'agit d'un script en java script et je jette l'éponge, je n'y arrive pas.
J'aurais besoin du code c'est le résultat à chercher

<SCRIPT LANGUAGE="JavaScript">
<!--
var base= new Array ("0", "1", "2", "3" , "4" , "5" , "6", "7", "8" , "9" , "A", "B", "C", "D", "E", "F", "G", "H", "I", "J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z","a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z")
var pass=" "
var z=23;
var y=28;
var f= new Array( );
var K=new Array( );

for (x=0; x<10; x++)
{
f[x]=x<<9
f[x]+=23
}
for (x=10; x<36; x++)
{
y=y<<1
v= Math.sqrt(y)
v= parsenInt (v,16)
v+=5
f[x]=v
y++
}
for (x=36; x<62; x++)
{
z=z<<1
v= Math.sqrt (z)
v= parseInt (v,16)
v+=74
f[x]=v
z++
}

var iCounter = 3

function inc( )
{
iCounter--
if (iCounter > 0)
{
if (confirm("\nCE MOT DE PASSE EST INVALIDE\n\nUN AUTRE ESSAI ?"))
Check ( )
else
location.href='mot_pass.html'
}
else
location.href='mot_pass.html'
}
function Check ( )
{
pass = prompt ("ENTREZ VOTRE MOT DE PASSE", " ")
if (pass==null | | pass==" ")
{
history.go (-1)
}
else
{
code [1]
var lpass=(pass.length)+1
for (l=1 ; l<lpass ; 1++)
{
K[1] = pass.charAt(1)
}
var code=0;
for (y=1; y<lpass; y++)
{
for (x=0; x<62; x++)
{
if (K[y]==base[x])
{
code+=f[x]
code*=y
}
}
}
if (code==402056)
go ( );
else
inc ( ).
}
}
function go ( )
{
location.href=pass+".html";
}
//-->
</SCRIPT>