This script automatically goes to self-reg page (don't have an account) for user to register.
Place Optional Content 2 for the main portal (login) page.
here is info on working with javascript
How To: ISE Web Portal Customization Options
<script>
$(document).ready(function(){
$('#ui_login_self_reg_button').trigger('click');
$('[id="page-login"]').hide();
});
</script>