function previousDatetagCalendar() {

	if((currentFirstActiveCalendarIndex-1) >= 1) {
		jQuery("#calendarone"+(currentFirstActiveCalendarIndex+2)).css("display", "none");
		currentFirstActiveCalendarIndex--; 
		jQuery("#calendarone"+currentFirstActiveCalendarIndex).css("display", "block");
		if(currentFirstActiveCalendarIndex+1 <= datetagCalendarCount) {
			jQuery("#calendarone"+(currentFirstActiveCalendarIndex+1)).css("display", "block");
		}
		if(currentFirstActiveCalendarIndex+2 <= datetagCalendarCount) {
			jQuery("#calendarone"+(currentFirstActiveCalendarIndex+2)).css("display", "block");
		}
	}
}

function nextDatetagCalendar() {
	if((currentFirstActiveCalendarIndex+3) <= datetagCalendarCount) {
		jQuery("#calendarone"+currentFirstActiveCalendarIndex).css("display", "none");
		currentFirstActiveCalendarIndex++; 
		jQuery("#calendarone"+currentFirstActiveCalendarIndex).css("display", "block");
		jQuery("#calendarone"+(currentFirstActiveCalendarIndex+1)).css("display", "block");
		jQuery("#calendarone"+(currentFirstActiveCalendarIndex+2)).css("display", "block");
	}
}

function setCalendarToIndex(setToIndex) {
	if(datetagCalendarCount >= setToIndex && currentFirstActiveCalendarIndex+2 < setToIndex ) {
		jQuery("#calendarone"+currentFirstActiveCalendarIndex).css("display", "none");
		jQuery("#calendarone"+(currentFirstActiveCalendarIndex+1)).css("display", "none");
		jQuery("#calendarone"+(currentFirstActiveCalendarIndex+2)).css("display", "none");

		if(setToIndex-2 > 0) {
			currentFirstActiveCalendarIndex = setToIndex-2;
			jQuery("#calendarone"+currentFirstActiveCalendarIndex).css("display", "block");
			jQuery("#calendarone"+(currentFirstActiveCalendarIndex+1)).css("display", "block");
			jQuery("#calendarone"+(currentFirstActiveCalendarIndex+2)).css("display", "block");
		}
		else if(setToIndex+2 >= datetagCalendarCount) {
			currentFirstActiveCalendarIndex = setToIndex;
			jQuery("#calendarone"+currentFirstActiveCalendarIndex).css("display", "block");
			jQuery("#calendarone"+(currentFirstActiveCalendarIndex+1)).css("display", "block");
			jQuery("#calendarone"+(currentFirstActiveCalendarIndex+2)).css("display", "block");		
		}
	}
}

jQuery(document).ready(function() {

jQuery("#next_dt").click(
function () {nextDatetagCalendar(); }
);

jQuery("#prev_dt").click(
function () { previousDatetagCalendar(); }
);
setCalendarToIndex(setToIndex);
});