function encrypt(inpass) {
   var pass = 1;
   for(e = 0; e < inpass.length; e++) { pass *= inpass.charCodeAt(e); }
   var pass = pass + "";
   if (pass.length > 20) { pass = pass.substr(0,20); }
   return pass;
   }

function chkPass(passw) {
   inpass = document.getElementById(passw).value;
   a = 0;
   c = 0;
   n = 0;
   x = 0;
   ok = true;
   for(e = 0; e < inpass.length; e++) { 
      q = inpass.substr(e, 1);
      if (q >= "a" && q <= "z") { a++; }   
      if (q >= "A" && q <= "Z") { c++; }   
      if (q >= "0" && q <= "9") { n++; }   
      }
   if (a + c + n < e) { alert("Use only letters and numbers"); ok = false;  }
   if (a + c == 0) { alert("Use letters as well as numbers"); ok = false; }
   if (n == 0) { alert("Use numbers as well as letters"); }
   if (a = 0 || c == 0) { alert("Use upper and lower case letters"); }
   if (e < 8) { alert("Use at least eight characters"); ok = false; }
   document.getElementById(passw).focus;
   return ok;
   }