dot-js script that adds a button to toggle my/all cards

agilezen.com.js

(function agilezen() {

    // Only run if on board page
    if ( (window.location.href).indexOf("board") !== -1 ) {

        // window.ui.userid is unavailable for some reason,
        // so this is a  crazy workaround to get the user id
        var userid = $('#owner').find('option[selected="selected"]').val();

        // Add a button to toggle my cards
        $('#toolbar-right').prepend('<a href="#" onclick="return false" class="filter-my-cards">Show <span>My</span><span style="display:none;">All</span> Cards</a>');

        // When the button is clicked, toggle my cards
        $('.filter-my-cards').click(function() {
            $('li.story:not([data-ownerid="' + userid + '"])').toggle();
            $(this).find('span').toggle();
        });

    }

}());