$(function() {

        var COOKIE_NAME = 'gg_post_layer';
        var date = new Date();
        var date_now = new Date();
        var gueltigkeit = 730 * 24 * 60 * 60 * 1000;

        date.setTime(date.getTime() + gueltigkeit);
        if ($.cookie(COOKIE_NAME) == null) {
            $.cookie(COOKIE_NAME, date_now.getTime(), { path: '/', expires: date });tb_show(" ","http://www.guenther-guenther.com/aktion/iframe.html?keepThis=true&TB_iframe=true&height=260&width=290", false);} 
			else {
            if ( ($.cookie(COOKIE_NAME) + gueltigkeit) < date_now.getTime() ) {
                $.cookie(COOKIE_NAME, date_now.getTime(), { path: '/', expires: date });
            }
        }
    });