var EXPO = EXPO || {}; //isolated namespace
if (EXPO.about) {
	console.warn('WARNING: EXPO.eventsFeed is already defined!');
} else {
	EXPO.about = (function () {
		// variables
		var that = {};
		//default module setting
		that.opt = {};
		//dependence's
		var com = EXPO.common;
		//private
		var Tabs = function (options) {
			this.opt = options;
			var self = this,
				opt = this.opt,
				tabClass = opt.tabClass,
				activeClass = opt.activeClass;
			this.$tabsList = $('#'+opt.listId);
			this.$tabs = $('#'+opt.tabsId);
			this.$tabsOpenings = $('#'+opt.tabsOpeningId);

			$('a',this.$tabsList).on('click', function () {
				$(this).parent('li').addClass(activeClass).siblings().removeClass(activeClass);
					var tabId = $(this).attr('href');
				tabId = tabId.replace('#','');
				self.setActive(tabId);
				return false;
			});


		};
		Tabs.prototype = {
			initTabs: function () {

			},
			setActive: function (tabId) {
				var activeClass = this.opt.activeClass,
					tabClass = this.opt.tabClass,
					postfix = this.opt.postfix;
				this.$tabs.children('.'+tabClass).hide().removeClass(activeClass);
				this.$tabs.children('#'+tabId).fadeIn(function () {
					$(this).addClass(activeClass)
				});
				this.$tabsOpenings.children('.'+tabClass).removeClass(activeClass);
				this.$tabsOpenings.children('#'+tabId+postfix).addClass(activeClass);

			}
		};
		that.init = function (options) {
			// settings extending
			$.extend(this.opt, options);
			// begin of initialization
			var self = this;
			this.tabs = new Tabs(this.opt.tabs);

		};
		return that;
	}());
}