How To Hide Comments From Activity Stream

I am interested in “Show/Hide Comments” and I found the following code for that :

add_action( 'wp_footer', 'add_comment_hide_show' );
function add_comment_hide_show() {
    ?>
    <style>
    .single-group .activity-comments ul{display: none;}
    </style>
    <script type="text/javascript">
    jQuery(function($) {
      setInterval(function() {
        $('.activity-meta').each(function() {
           if( !$(this).find('.show-comments').length ){
            var html = '<a href="#" class="button bp-primary-action show-comments">Show/Hide Comments</a>';
            $(this).find('.button.acomment-reply').after(html);
           }
        });

      }, 500);

      $('body').on('click', '.show-comments', function(e) {
        e.preventDefault();
	var obj = $(this).closest('.activity-content').next('.activity-comments').find('ul');
	obj.slideToggle();
        return false;
      });

    });
    </script>
    <?php
}

And it is working good when I add it to functions.php but the problem is that by default it shows all the comments and it hides the comments when we click on the “Show/Hide Comments” button. Can anybody edit it so that by default it hides the comments and when we click on the button then it shows the comments.

Thanks.