/*
Copyright by .:ArTuR:.
Author Artur Grzybowski
*/
var monthsLengths = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
var weekdaysNames = new Array('PO','WT','ŚR','CZ','PT','SO','ND');
var monthsNames = new Array('Styczeń','Luty','Marzec','Kwiecień','Maj','Czerwiec','Lipiec','Sierpień','Wrzesień','Październik','Listopad','Grudzień');

function calendar(day,month,year,whereSign) {
	
    bName = navigator.appName;
	var calendarCode = "";
    if (bName.substring(0,9) == "Microsoft") {
		calendarCode = calendarCode + "<BR><BR>";
	}
	
	var calendarCode = calendarCode + "<TABLE><TR><TD>";

	firstDayOfMonth = new Date(year,(month-1),1);
	var firstDay = firstDayOfMonth.getDay();

	if (firstDay == 0)  {
		firstDay = 7;
	}

	if(year%4==0) monthsLengths[1]=29;
	
	leftLink = "<A href='javascript:calendar("+day+","+month+","+(year-1)+",\""+whereSign+"\")'>&lt;&lt;</A>";
	rightLink = "<A href='javascript:calendar("+day+","+month+","+(year+1)+",\""+whereSign+"\")'>&gt;&gt;</A>";
	calendarCode = calendarCode + "<TABLE><TR><TH width=\"15%\">"+leftLink+"</TH><TH width=\"70%\">"+year+"</TH><TH width=\"15%\">"+rightLink+"</TH></TR>";

	leftLink = "<A href='javascript:calendar("+day+","+((month-1)<1?12:(month-1))+","+(((month-1)<1?(year-1):year))+",\""+whereSign+"\")'>&lt;&lt;</A>";
	rightLink = "<A href='javascript:calendar("+day+","+((month+1)>12?1:(month+1))+","+(((month+1)>12?(year+1):year))+",\""+whereSign+"\")'>&gt;&gt;</A>";
	calendarCode = calendarCode + "<TR><TH>"+leftLink+"</TH><TH>"+monthsNames[month-1]+"</TH><TH>"+rightLink+"</T></TR></TABLE>";

	calendarCode = calendarCode + "<TABLE><TR>";
	
	var currentDay = 0;
	var endDay = 7;
	
	while (currentDay<endDay) {
		weekDayName = weekdaysNames[currentDay];
		weekDayName = weekDayName.substring(0,2);
		background='';
		background=(currentDay==5)?'class=\"saturday\"':background;
		background=(currentDay==6)?'class=\"sunday\"':background;
		calendarCode = calendarCode + "<TD "+background+">"+weekDayName+"</TD>";
		currentDay++;
	}
	
	calendarCode = calendarCode + "</TR><TR>";
	
	currentDay = 1;
	endDay = firstDay;
	var newWeekDay = 0;
	
	while (currentDay < endDay){
		background='';
		background=(currentDay==6)?'class=\"saturday\"':background;
		background=(currentDay==7)?'class=\"sunday\"':background;
		calendarCode = calendarCode + "<TD "+background+">&nbsp;</TD>";
		newWeekDay++;
		currentDay++;
	}
	
	currentDay = 1;
	endDay = monthsLengths[month-1];
	
	while (currentDay <= endDay){
		if (newWeekDay >= 7) {
			calendarCode = calendarCode + "</TR><TR>"; 
			newWeekDay=0;
		}
		background='';
		background=(newWeekDay==5)?'class=\"saturday\"':background;
		background=(newWeekDay==6)?'class=\"sunday\"':background;
		background=((currentDay==07&&month==7&&year==2025))?'class=\"calendar_sign\"':background;
		calendarCode = calendarCode + "<TD "+background+"><A href='javascript:createCalendar(\""+whereSign+"\"),signDate("+currentDay+","+month+","+year+",\""+whereSign+"\");'>"+((currentDay<10)?'0'+currentDay:currentDay);+"</A></TD>";
		newWeekDay++;
		currentDay++;
	}
	
	while (newWeekDay < 7){
		calendarCode = calendarCode + "<TD>&nbsp;</TD>";
		newWeekDay++;
	}
	
	calendarCode = calendarCode + "</TR></TABLE><TABLE><TR><TH><A href='javascript:createCalendar(\""+whereSign+"\")'>Zamknij</A></TH></TR></TABLE></TD></TR></TABLE>";
	
	change(whereSign+'_create_calendar','html',calendarCode);
}

function createCalendar(whereSign) {
	chstyle(whereSign+'_create_calendar','display','block','none');
	calendar(07,7,2025,whereSign);
}

function signDate(day,month,year,whereSign){
	day=((day<10)?'0'+day:day);
	month=((month<10)?'0'+month:month);
	change(whereSign,'value',year+'-'+month+'-'+day);
}