function showCalendar(section,day,month,year)
{
    var req = new JsHttpRequest();
	var result_field = document.getElementById("calendar_container");
	var stat_img = document.getElementById("calendar_load_img");
    document.getElementById("calendar_preload").innerHTML="Загрузка обзора...";
    stat_img.style.display="inline";
	JsHttpRequest.query(
            '/ajax/show_calendar.php', // backend
            {
                // pass a text value
                'section': section,
                'day': day,
                'month': month,
                'year': year
            },
            // Function is called when an answer arrives.
            function(result, errors) {
                // Write errors to the debug div.
				/*if (stat_type == 'last')
				{
					document.getElementById("debug").innerHTML = errors;
				}*/
                // Write the answer.
                if (result) {
                    stat_img.style.display="none";
                    result_field.innerHTML = result["req_res"];
                }
            },
            false  // do not disable caching
        );
}