GreenRain37 on "[Theme: Customizr] How to upload javascript?"

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Here is what I done so far:

I went to this link and copy HTML snippet:

// Add scripts to wp_footer()
function child_theme_footer_script() { ?>
    <script type="text/javascript" src="http://drivesafe2015.org/wp-admin/js/discount.js"></script>
<?php }
add_action( 'wp_footer', 'footer_script' );

Still, when I use promo code box there is no result.

For example you can try code 5OFF and nothing happens (supposed to be javascript popup window.