A basic content switcher script. Can be used for multiple tabbed content on a page.

gistfile1.js

jQuery('.js-tab-link a').click(function(){
	var that = jQuery(this);
	var tabIndex = that.parent().index();
	var tabs = that.parents('.gallery-item').find('.gallery-cover-content');

	that.parent('.js-tab-link').siblings().removeClass('gallery-active');
	that.parent('.js-tab-link').addClass('gallery-active');
	tabs.removeClass('gallery-active');
	tabs.eq(tabIndex).addClass('gallery-active');

	event.preventDefault();
});