Level 5 is a toughie, anyone care to help? I have grabbed the code if anyone doesnt know how.

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<H1>CONGRATULATIONS!</H1><BR><BR>Now you can sign the guestbook!</FONT><BR><BR><BR><A onfocus=this.blur() href="http://gb.webmart.de/guestbook.cfm?bookid=506441" target=_blank><IMG src="fedkling.gif" border=0></A><BR><BR><BR><BR><BR><FONT face=veranda color=red><B>SECURITY LEVEL 5</B></FONT><BR>
<SCRIPT language=JavaScript>

<!--
function abfrage1() {
var code = new Array("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");

Eingabe = window.prompt("Password : ","");

if(Eingabe != ((code.length)*100)/2-66)
{
window.location.href="denied.htm";
}
else
window.location.href=Eingabe+".htm";
}

// -->
</SCRIPT>

<P><A onfocus=this.blur() href="javascript:abfrage1()"><IMG src="enter.gif" border=0></A></P><IMG height=20 hspace=4 src="http://counter.digits.com/wc/-d/4/-h/nummervier" width=60 align=middle vspace=2 border=0> </CENTER></BODY>