help with a html template

[steven32collins]

hi ive got this html template here for a logon script on a forum how can i add an extra feild (for numbers) and make it so it saves it as a variable?#


<script language='JavaScript' type="text/javascript">
<!--
function ValidateForm() {
   var Check = 0;
   if (document.LOGIN.UserName.value == '') { Check = 1; }
   if (document.LOGIN.PassWord.value == '') { Check = 1; }
   if (Check == 1) {
      alert("{ibf.lang.blank_fields}");
      return false;
   } else {
      document.LOGIN.submit.disabled = true;
      return true;
   }
}
//-->
</script>     
{ibf.lang.login_text}




{ibf.lang.forgot_pass} <a href='{ibf.vars.board_url}/index.{ibf.vars.php_ext}?act=Reg&amp;CODE=10'>{ibf.lang.pass_link}[/url]




<form action="{ibf.script_url}act=Login&amp;CODE=01" method="post" name='LOGIN' onsubmit='return ValidateForm()'>
<input type='hidden' name='referer' value="$referer" />
<div class="tableborder">
  <div class="maintitle"><{CAT_IMG}>&nbsp;{ibf.lang.log_in}</div>
  <div class='pformstrip'>$message</div>
  <table class="tablebasic" cellspacing="1">
  <tr>
    <td class='pformleftw'>{ibf.lang.enter_name}</td>
    <td class='pformright'><input type='text' size='20' maxlength='64' name='UserName' class='forminput' /></td>
  </tr>
  <tr>
    <td class='pformleftw'>{ibf.lang.enter_pass}</td>
    <td class='pformright'><input type='password' size='20' name='PassWord' class='forminput' /></td>
  </tr>
  </table>
  <div class="pformstrip">{ibf.lang.options}</div>      
  <table class="tablebasic" cellspacing="1">
  <tr>
    <td class='pformleftw'>{ibf.lang.cookies}</td>
    <td class='pformright'><input type="radio" name="CookieDate" value="1" checked="checked" />{ibf.lang.cookie_yes}
<input type="radio" name="CookieDate" value="0" />{ibf.lang.cookie_no}</td>
  </tr>
  <tr>
    <td class='pformleftw'>{ibf.lang.privacy}</td>
    <td class='pformright'><input type="checkbox" name="Privacy" value="1" />{ibf.lang.anon_name}</td>
  </tr>
  </table>      
  <div class="pformstrip" align="center"><input type="submit" name='submit' value="{ibf.lang.log_in_submit}" class='forminput' /></div>
</div>
</form>