// Check if new password  consists of only letters and numbers
    function checkNewPassword(Pwd) {
      var errMsg = "";
      if (!Pwd) {
        errMsg = 'Please enter password!';
      }
      else {
        var strPwd = new String(Pwd);
        if (strPwd.length < 6) {
          errMsg = "Password must consist of 6 to 10 letters/numbers!";
        }
        else {
          for (i = 0; i < strPwd.length; i++) {
            var oneChar = strPwd.charAt(i);
            if (!((oneChar >= '0' && oneChar <= '9') || (oneChar >= 'A' && oneChar <= 'Z') || (oneChar >= 'a' && oneChar <= 'z'))) {
              errMsg = 'Password must consist of only letters and numbers, not special characters!';
              break;
            }
          }
        }
      }
      return errMsg;
    }