100分求教,不够再加!
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>Level-3</title>
<!--
看到下面的代码是不是很头痛呢:)
-->
<SCRIPT LANGUAGE="JavaScript">
<!--
al="\`~!@#$%^&*()_+|[]{},.<>/?'1234567890-="+"CXZLKJHGFDSAPOIUYTREWQ"
+"qwertyuiopasdfghjklzxcvbnmMNBV";
ab1="";
bctr=0;
tst="";
enigma="";
function ckPwd(){
tst=document.isn.username.value
+"="+document.isn.passwrd.value+"=";
ls=document.pd..value;
a=eval(ls.substring(0,2))-90;
ls=ls.substring(2,ls.length);