Today-Button wrong month

It’s a little more complicated than that as we need the zero based index when selectedIndex is used later on.

Try the following:

function scp_calendar_today()
	{
	var currentDate = new Date();

	SchedulePostsCalendar.setDate(currentDate);

	var sDay = new String(currentDate.getDate());
	var sMon = new String(currentDate.getMonth());
	var sMonReal = new String(currentDate.getMonth()+1);
	var sYear = new String(currentDate.getFullYear());
	var sHour = new String(currentDate.getHours());
	var sMin = new String(currentDate.getMinutes());

	var dateString = '';
	if( sDay.length < 2 ) { sDay = '0' + sDay; }
	dateString += sDay + '/';
	if( sMonReal.length < 2 ) { sMonReal = '0' + sMonReal; }
	dateString += sMonReal + '/' + sYear + ' ';
	if( sHour.length < 2 ) { sHour = '0' + sHour; }
	dateString += sHour + ':';
	if( sMin.length < 2 ) { sMin = '0' + sMin; }
	dateString += sMin;

	document.getElementById('mm').selectedIndex = sMon;
	document.getElementById('jj').value = sDay;
	document.getElementById('aa').value = sYear;
	document.getElementById('hh').value = sHour;
	document.getElementById('mn').value = sMin;

	document.getElementById('calendarHere').value = dateString;
	}

What browser are you running?