/* show error message on homepage */
  function fnShowError() {
    var err = document.getElementById("errorHolder");
    err.className = "error";
    err.innerHTML = "<p>Please enter your product catalogue number from your Argos receipt above and click on 'GO' !</p>";
  }
  
  /* link to full screen registration */
  function fnOpenRegistration(oLink) {
  
    // Track the registration link if poss
    if (typeof(cto) != "undefined") {
      cto.tracklink(oLink);
    }
  
    // Launch registration page
    launchIUR(
    /* target_url */ "http://registration.disney.co.uk",
    /* task */ "invite",
    /* promotion_id */ 4230,
    /* skin */ "",
    /* next_url */ "http://www.disney.co.uk/argos/register_thankyou.jsp",
    /* site */ "",
    /* member_name */ "",
    /* password */ "",
    /* ageband */ "",
    /* fullscreen */ true,
    /* swid */ "");
    
    // don't process the hyperlink as the above function should redirect us
    return false;

  }
  
  function fnMoveCursor(num) {
    if (document.getElementById("num"+(num-1)).value.length > 0) {
      document.getElementById("num"+num).focus();
    }
  }