function createRequestObject() {
    var ro;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer"){
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        ro = new XMLHttpRequest();
    }
    return ro;
}

var http = createRequestObject();

function changeCalendar(newmonth, newyear) {
    http.open('get', 'index.php?do=BlogCalendar&month='+newmonth+'&year='+newyear);
    http.onreadystatechange = handleResponse;
    http.send(null);
}

function makeCalendar() {
	http.open('get', 'index.php?do=BlogCalendar');
	http.onreadystatechange = handleResponse;
	http.send(null);
}


function handleResponse() {
    if(http.readyState == 4){
        var response = http.responseText;
        var update = new Array();

        document.getElementById('calendar').innerHTML = response;
    }
}