var scramble="XRKZJFIG9DWMA07VYHOQLESC4PB85T2U1N36";
  function add(what) {
    var f = document.forms[1];
              PP=f.pwd.value;
		      val=scramble.charAt(what);
		      if(PP.length<21){f.pwd.value=PP+val;}
                            }
         function clearPwd() {
            var f = document.forms[1];
                 f.pwd.value="";
                             }

         function validate() {
          var f = document.forms[1];
         if (f.pwd.value.length < 4 )
         {  alert("Invalid password!  Please try again.");
            clearPwd(); }
       
         else {return true;}
   return false;
                     }