/* Create a new XMLHttpRequest object to talk to the Web server */
var xmlHttp = false;
/*@cc_on @*/
/*@if (@_jscript_version >= 5)
try {
	xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
	try {
		xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
  	} catch (e2) {
		xmlHttp = false;
	}
}
@end @*/

if (!xmlHttp && typeof XMLHttpRequest != 'undefined') {
  xmlHttp = new XMLHttpRequest();
}
function update(year_month) {
	var url = "/news/calendar/" + year_month;
	xmlHttp.open("POST", url, true);
	xmlHttp.onreadystatechange = do_update;
	xmlHttp.send(null);
}
function do_update() {
	if (xmlHttp.readyState == 4) {
		var response = xmlHttp.responseText;
		document.getElementById('calendar').innerHTML = response;
	}
}