var d = new Date();
year = d.getFullYear();
month = d.getMonth();
date = d.getDate();
day = d.getDay();

window.onload=writeCalendar;

// find current month and number of days in current month

switch (month)
{
	case 0:
		m = "January";
		numdays = 31;
		break;
	case 1:
		m = "February";
		if (year % 4 == 0) // finds leap years
			numdays = 29;
		else
			numdays = 28;
		break;
	case 2:
		m = "March";
		numdays = 31;
		break;
	case 3:
		m = "April";
		numdays = 30;
		break;
	case 4:
		m = "May";
		numdays = 31;
		break;
	case 5:
		m = "June";
		numdays = 30;
		break;
	case 6:
		m = "July";
		numdays = 31;
		break;
	case 7:
		m = "August";
		numdays = 31;
		break;
	case 8:
		m = "September";
		numdays = 30;
		break;
	case 9:
		m = "October";
		numdays = 31;
		break;
	case 10:
		m = "November";
		numdays = 30;
		break;
	case 11:
		m = "December";
		numdays = 31;
		break;
	default:
		m = "undefined";
}

// find current calendar week
if((date - day) <= 1) { week = 1; }
else if((date - day) <= 8) { week = 2; }
else if((date - day) <= 15) { week = 3; }
else if((date - day) <= 22) { week = 4; }
else if((date - day) <= 29) { week = 5; }
else { week = 6; }

// find day of week of first of the month
firstday = (((week * 7) - 6) + day) - date;
firstsun = 8 - firstday;

// map the calendar week and day of week for each date
var dates = new Array;
for(i = 1; i <= numdays; i++)
{
	if(i < firstsun) { curweek = 1; }
	else if (i >= firstsun && i < (firstsun + 7)) { curweek = 2; }
	else if (i >= (firstsun + 7) && i < (firstsun + 14)) { curweek = 3; }
	else if (i >= (firstsun + 14) && i < (firstsun + 21)) { curweek = 4; }
	else if (i >= (firstsun + 21) && i < (firstsun + 28)) { curweek = 5; }
	else { curweek = 6; }
	curday = (firstday + i - 1) - (7 * (curweek - 1));
	dates[i] = String(curweek)+String(curday);
}

// write information to calendar page
function writeCalendar()
{
	// write current month and year on calendar
	document.getElementById("month").innerHTML=m+" "+year;
	
	// hide 5th and/or 6th calendar weeks if unnecessary
	if((numdays + firstday) <= 28)
	{
		document.getElementById("week5top").style.display="none";
		document.getElementById("week5").style.display="none";
	}
	if((numdays + firstday) <= 35)
	{
		document.getElementById("week6top").style.display="none";
		document.getElementById("week6").style.display="none";
	}
	
	// write dates in calendar
	//NEW (AUG31) write events in calendar
	for(i = 1; i<= numdays; i++)
	{
		document.getElementById("week"+dates[i]+"top").innerHTML=i;
		document.getElementById("week"+dates[i]+"top").style.background="#95AACC";
		document.getElementById("week"+dates[i]).style.background="#CFDAEB";
		if (daytext = document.getElementById("day"+i))
		{
			document.getElementById("week"+dates[i]).innerHTML=daytext.innerHTML;
		}
	}
	
	// highlight today's date
	document.getElementById("week"+week+day+"top").innerHTML="Today&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"+date;
	document.getElementById("week"+week+day+"top").style.font="italic small-caps 900 12px arial";
	document.getElementById("week"+week+day+"top").style.background="#6A98CA";
	document.getElementById("week"+week+day+"top").style.color="#241322";
	document.getElementById("week"+week+day).style.background="#CADBF0";
	document.getElementById("week"+week+day).style.color="#000000";
}