Hiding the signup form

hide.html

<script> 
function getParameterByName(name)
{
  name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
  var regexS = "[\\?&]" + name + "=([^&#]*)";
  var regex = new RegExp(regexS);
  var results = regex.exec(window.location.href);
  if(results == null)
    return null;
  else
    return decodeURIComponent(results[1].replace(/\+/g, " "));
}

$(document).ready(function(){

    if(!getParameterByName('s')){
      $form = $('#form');
      $form.html('<h2>You need to find a friend with a code</h2>');

    }
    
});
</script>