Hidden Gravity Forms Validation & Confirmation

enqueue_theme_js.php

# Use the wp_enqueue_scripts hook to enqueue scripts and styles
add_action( 'wp_enqueue_scripts', 'mytheme_enqueue', 99999);

# Callback function
function mytheme_enqueue()
{

	wp_enqueue_script( 'mytheme', get_stylesheet_directory_uri() . '/javascripts/theme.js', array( 'jquery' ), '', 'footer' );

}

hidden_gform.css

.contact_form {
  display: none;
}

hidden_gform.js

jQuery(document).ready(function() {

	$( '.contact_link' ).click( function() {

		$( '.contact_form' ).toggle( 'slow' );

		$('html, body').animate({scrollTop:$(document).height()}, 'slow');

	});

});

hidden_gform.php

<div class="contact">
<div class="contact_form">
<?php echo do_shortcode( '[gravityform id="1" title="true" description="false"]' ); ?>	
</div>
<a class="contact_link" href="javascript:void(null);" title="Contact Support">Contact Support</a>
</div>

show_form_on_submit.php

# Was this form submitted?
if ( isset( $_POST[ 'is_submit_1' ] ) ) :

# Print our javascript in the footer.
add_action( 'wp_footer', function()
{ ?>
<script>
jQuery(document).ready(function() {
	$( '.contact_form' ).toggle( 0 );
	$('html, body').animate({scrollTop:$(document).height()}, 0);
});
</script>
<?php }, 99999);

endif;