[js] Haslo kodowane Opcje

[zmp3]

Mam taki skrypt który koduje wyrazy i chcialbym aby on dzialal w odwrotna strone czyli jak mu podam 3.347840833776446e+30 zeby mi to rozkodowal jakie ma byc moze mi ktos pomóc jak to zrobic ?
bo cóż mi z tego ze mma skrypt jak nie wiem jak moge sobie kodowac w nim haslo zeby potem sie zgadzalo ? Z góry dziekuje za pomoc.

[xml:1:33f4178e32]<script>

function submitentry(){
password = document.password1.password2.value.toLowerCase()
username = document.password1.username2.value.toLowerCase()
passcode = 1
usercode = 1
for(i = 0; i < password.length; i++) {
passcode *= password.charCodeAt(i);
}
for(x = 0; x < username.length; x++) {
usercode *= username.charCodeAt(x);
}
//CHANGE THE NUMBERS BELOW TO REFLECT YOUR USERNAME/PASSWORD
if(usercode==76956246387540&&passcode==3.347840833776446e+30)
//CHANGE THE NUMBERS ABOVE TO REFLECT YOUR USERNAME/PASSWORD
{
window.location=password+".html"}
else{
alert("password/username combination wrong. Please try again.")}
}
</script>
<form name="password1">
<font class="main_text" color="#FFFFFF" size="2" face="Arial, Helvetica, sans-serif"><strong><b><font color="#000000">Enter
username:</font></b> </strong> <font color="#000000">
<input type="text" name="username2" size="15" value="games4u" disabled="yes">
<br>
<strong><b>Enter password:</b> </strong> </font>
<input type="password" name="password2" size="15">
<input type="button" value="Submit" onClick="submitentry()" name="button">
</font>
</form>[/xml:1:33f4178e32]
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