color box load using jquery in drupal

add class for image in page:

$("img").addClass("lightbox");

add color box to all image in page :

$('.pane-bundle-tabbed-content img').on('click', function(event) {
    event.preventDefault();

    $('.lightbox').colorbox({    
        open: true,
        rel: 'group',
        href: function () {
            return jQuery(this).attr("src");
        }
    });
});