function calendarToday(){
 mainap = new Date();
 honap=mainap.getMonth()+1;
 mainapStr = 'day' + mainap.getFullYear() + honap + mainap.getDate();
 cella = document.getElementById(mainapStr);
 if (cella) {
  cella.className=cella.className + ' pn_mainap ';
  cella.style.backgroundColor='Yellow';
 }
}
 
var ajax_calendar = new sack();
var selectObj;

function refreshCalendar(ev, ho) {
selectObj = document.getElementById('calendar');
ajax_calendar.requestFile = '/get_Calendar.php?ev='+ev+'&ho='+ho;
ajax_calendar.onCompletion = createCalendar;	
ajax_calendar.runAJAX();
}
 
function createCalendar() {
 selectObj.innerHTML=ajax_calendar.response;
 calendarToday();
}