function updateCalendar(m, y, roomID, lang){
	var url = "../../../php/calendar/datepicker.php?m="+m+"&y="+y+"&lang="+lang+"&roomID="+roomID;
	//if(dots == 1) url = "../" + url;
	var rq = new SZN.HTTPRequest();
	rq.setMethod("get");
	rq.setFormat("txt");
	rq.setMode("async");
	rq.send(url,window,"printResults");
}

function printResults(txt, status) {
	if (status == 200) {
	   document.getElementById('calendar-pickerbox').innerHTML = txt;
	} 
	else {
	}
}

function checkForm(){
    err = '';
    if(document.getElementById('name').value == '') err = err + 'Please fill in your name.\n';
    if(document.getElementById('mail').value == '') err = err + 'Please fill in your e-mail address.\n';
    if(document.getElementById('persons').value == '') err = err + 'Please fill in count of persons.\n';
    if(document.getElementById('th').checked == false && document.getElementById('fh').checked == false) err = err + 'Please choose at least one transfer.\n';

    if(document.getElementById('th').checked == true){
        if(document.getElementById('from1').value == '') err = err + 'Please fill in the pick-up location.\n';
        if(document.getElementById('to1').value == '') err = err + 'Please fill in the drop-off location.\n';
        if(document.getElementById('date1').value == '') err = err + 'Please fill in the date of the transfer.\n';
    }

    if(document.getElementById('fh').checked == true){
        if(document.getElementById('from2').value == '') err = err + 'Please fill in the pick-up location.\n';
        if(document.getElementById('to2').value == '') err = err + 'Please fill in the drop-off location.\n';
        if(document.getElementById('date2').value == '') err = err + 'Please fill in the date of the transfer.\n';
    }

    if(err != '') alert(err);
    else {
        document.getElementById('shuttleform').submit();
    }
}