if ( function_exists( 'add_image_size' ) ) {
    add_image_size( 'listing-page-thumb', 822, 300, true );
    add_image_size( 'sidebar-thumb', 94, 62, true );
}

function clickable_ellipsis($content){

    $searchfor = '/\[(...)\]/';
    $replacewith = '[<a href="'.get_permalink().'">$1</a>]';

    $content = preg_replace($searchfor, $replacewith, $content, 1);
    return $content;

}

add_filter('the_excerpt', 'clickable_ellipsis');





// =========================================
// = My Changes Below =
// =========================================


add_action('wp_enqueue_scripts', 'add_my_code');

function add_my_code() {

    add_action( 'print_footer_scripts', 'my_footer_script' );
}

// Add jQuery to footer

function my_footer_script() { ?>


    <!-- only on Posts page, archives and search listing pages -->
    <?php if(is_home() || is_archive() || is_search()) { ?>
    <script type="text/javascript">
        jQuery(function($) {

            $("img.listing-thumb").hover(
                    function () {
                        $(this).stop().fadeTo("fast", 0.7);
                    },
                    function () {
                        $(this).stop().fadeTo("fast", 1);
                    }
                );
        });
    </script>
    <?php }


}