function set_dontshow_cookie_sn(to_hide_id) {
	$.ajax({
		type: "POST",
		url: "http://www.seilbahn.net/sn/source/ajax.php",
		data: "ajax_to_do=2",
		success: function(msg){
		}
	});
	
	$('#'+to_hide_id).hide();
}