openerp.web_calendar_year = function(instance) {

    instance.web_calendar.CalendarView = instance.web_calendar.CalendarView.extend({
        get_fc_init_options: function() {
            var options = this._super();
            options.buttonText.year = instance.web._t("Year");
            options.header.right = "year,month,agendaWeek,agendaDay";
			options.eventAfterAllRender = function() {
				console.log("eventAfterAllRender");
				var tableBody = $('.oe_view_manager_body');
				tableBody.find('.fake-thead').remove();
				tableBody.scroll();
			}
            return options;
        },
		init_calendar: function() {
			console.log("Init calendar");
			$('.oe_view_manager_body').scroll(function(e, handler) {
				if($(this).scrollTop() > 43) {
					var theads = $(this).find('.fake-thead');
					if(theads.length == 0) {
						var original = $(this).find(".fc-skeleton");
						var headClone = original.clone();
						headClone.find("tbody").remove();
						headClone.css({ 'position': 'absolute', 'left': 0, 'top': $(this).scrollTop(), 'margin-left': '5px', 'z-index': 10, 'width': (original.css("width") == "100%") ? original.width() + 'px' : original.css("width") });
						headClone.find("th").css({'text-align': 'center'});
						headClone.addClass('fake-thead');
						$(this).append(headClone);
					} else {
						theads.css({ 'top': $(this).scrollTop() });
					}
				} else {
					$(this).find('.fake-thead').remove();
				}
			});
            return this._super.apply(this, arguments);
		}
    });
};