/* Preload images script */
var myimages=new Array()

function preloadimages(){
	for (i=0;i<preloadimages.arguments.length;i++){
		myimages[i]=new Image();
		myimages[i].src=preloadimages.arguments[i];
	}
}


/*
 * The path of images to be preloaded inside parenthesis: 
 */
preloadimages("webpictures/calendarimages/leftarrowoff.jpg","webpictures/calendarimages/leftarrowon.jpg","webpictures/calendarimages/rightarrowoff.jpg","webpictures/calendarimages/rightarrowon.jpg");


/***************************************************************************************
		changedate(): Moves to next or previous month or year, or current month depending on the button clicked.
		createCalendar(): Renders the calander into the page with links for each to fill the date form fields above.
***************************************************************************************/

var thisDate = 1;							// Tracks current date being written in calendar
var wordMonth = new Array("January","February","March","April","May","June","July","August","September","October","November","December");
var today = new Date();							// Date object to store the current date
var todaysDay = today.getDay() + 1;					// Stores the current day number 1-7
var todaysDate = today.getDate();					// Stores the current numeric date within the month
var todaysMonth = today.getUTCMonth() + 1;				// Stores the current month 1-12
var todaysYear = today.getFullYear();					// Stores the current year
var monthNum = todaysMonth;						// Tracks the current month being displayed
var yearNum = todaysYear;						// Tracks the current year being displayed
var firstDate = new Date(String(monthNum)+"/1/"+String(yearNum));	// Object Storing the first day of the current month
var firstDay = firstDate.getUTCDay();					// Tracks the day number 1-7 of the first day of the current month
var lastDate = new Date(String(monthNum+1)+"/0/"+String(yearNum));	// Tracks the last date of the current month
var numbDays = 0;
var calendarString = "";
var maxevents = 5;
var eventString ="";
var newsString ="";
var eastermonth = 0;
var easterday = 0;
var goodfridaymonth = 0;
var goodfriday = 0;
var eastermonday = 0;
var eastermondaymonth = 0;
var maximgs = ashimageslist.length;
var imgnum = 0;

function ashfrontpage() {

    currentnews();

	currentevents();
	
	createashimages("return");
    
	changedate("return");
	
	return;
}

function ashevents() {

	currentevents();
    
	changedate("return");
	
	return;
}

function gencalendar() {

/*
	document.write('Date: ' + String(monthNum+1) +'/0/' + String(yearNum));
	document.write('<br>');
	return;
*/

 
	changedate2("return");
	
	return;
}


function changedate(buttonpressed) {
	if (buttonpressed == "prevmo") monthNum--;
	else if (buttonpressed == "nextmo") monthNum++;
	else  if (buttonpressed == "return") { 
		monthNum = todaysMonth;
		yearNum = todaysYear;
	}

	if (monthNum == 0) {
		monthNum = 12;
		yearNum--;
		eastermonth =0;
	}
	else if (monthNum == 13) {
		monthNum = 1;
		yearNum++;
		eastermonth = 0;
	}

	lastDate = new Date(String(monthNum+1)+"/0/"+String(yearNum));
	numbDays = lastDate.getDate();
	firstDate = new Date(String(monthNum)+"/1/"+String(yearNum));
	firstDay = firstDate.getDay() + 1;
	createCalendar();

	return;
}

function changedate2(buttonpressed) {
	if (buttonpressed == "prevmo") monthNum--;
	else if (buttonpressed == "nextmo") monthNum++;
	else  if (buttonpressed == "return") { 
		monthNum = todaysMonth;
		yearNum = todaysYear;
	}

	if (monthNum == 0) {
		monthNum = 12;
		yearNum--;
		eastermonth = 0;
	}
	else if (monthNum == 13) {
		monthNum = 1;
		yearNum++;
		eastermonth = 0;
	}

	lastDate = new Date(String(monthNum+1)+"/0/"+String(yearNum));
	numbDays = lastDate.getDate();
	firstDate = new Date(String(monthNum)+"/1/"+String(yearNum));
	firstDay = firstDate.getDay() + 1;
	createCalendar2();

	return;
}

function easter(year) {

if (eastermonth != 0) return;

// feed in the year it returns the month and day of Easter using two GLOBAL variables: eastermonth and easterday
	var a = year % 19;
	var b = Math.floor(year/100);
	var c = year % 100;
	var d = Math.floor(b/4);
	var e = b % 4;
	var f = Math.floor((b+8) / 25);
	var g = Math.floor((b-f+1) / 3);
	var h = (19*a + b - d - g + 15) % 30;
	var i = Math.floor(c/4);
	var j = c % 4;
	var k = (32 + 2*e + 2*i - h - j) % 7;
	var m = Math.floor((a + 11*h + 22*k) / 451);
	var month = Math.floor((h + k - 7*m + 114) / 31);
	var day = ((h + k - 7*m +114) % 31) + 1;

	eastermonth = month;
	goodfridaymonth = month;
	eastermondaymonth = month;
	easterday = day;
	goodfriday = easterday - 2;
	eastermonday = easterday + 1;

	if ((goodfriday = checkday(year, goodfridaymonth, goodfriday)) != (easterday - 2))
		goodfridaymonth--;
		
	if ((eastermonday = checkday(year, eastermondaymonth, eastermonday)) != (easterday + 1))
		eastermondaymonth++;		

	return;
}

function currentevents() {

var object = document.getElementById('asheventslist');
var numlist = 0;

	eventString = '';

	for (var i = 0; i < events.length; i++) {
		if (events[i][0] == "") {
			if (events[i][3] > todaysYear) {
				buildEvent(events[i][1],events[i][2],events[i][3],events[i][6],events[i][7]);
				numlist++;
			}
			else if (events[i][3] == todaysYear) {
				if (events[i][2] > todaysMonth) {
					buildEvent(events[i][1],events[i][2],events[i][3],events[i][6],events[i][7]);
					numlist++;
				}
				else if (events[i][2] == todaysMonth) {
					if (events[i][1] >= todaysDate) {
						buildEvent(events[i][1],events[i][2],events[i][3],events[i][6],events[i][7]);
						numlist++;
					}
				}
			}
		}
		if (numlist > maxevents) break;	
	}
	
	object.innerHTML= eventString;  

}

function currentnews() {

var object = document.getElementById('ashnewslist');

	newsString = '';

	for (var i = 0; i < ashnews.length; i++) {
	    newsString += '<p align="justify"><strong>' + ashnews[i][0] + '</strong>' + ashnews[i][1] + '</p>';
	}

	object.innerHTML = newsString; 
	
	return;
}

function createashimages(buttonpush) {

var object = document.getElementById('ashimage');

	if (buttonpush == "previmg") {
		imgnum--; 
		if (imgnum < 0) imgnum = maximgs - 1;
	}
	else if (buttonpush == "nextimg") {
		imgnum++; 
		if (imgnum > (maximgs - 1)) imgnum = 0;
	}
	else  if (buttonpush == "return") { 
    	imgnum = randomnum(maximgs);
	}

/*	document.write("i:" + i + "Image String:" + ashimageslist[i] + "<br/>"); */
	object.innerHTML = ashimageslist[imgnum];
	
	return;	
}

function createCalendar() {
	calendarString = '';
	var daycounter = 0;
	calendarString += '<table border="1" cellpadding="0" cellspacing="1" cols="7">';
	calendarString += '<tr>';
	calendarString += '<td class="nospace" align="center" valign="center" width="30" height="20"><a href="#" onMouseOver="document.PrevMo.src=\'webpictures/calendarimages/leftarrowon.jpg\';" onMouseOut="document.PrevMo.src=\'webpictures/calendarimages/leftarrowoff.jpg\';" onClick="changedate(\'prevmo\')"><img name="PrevMo" src="webpictures/calendarimages/leftarrowoff.jpg" width="30" height="20" border="0" alt="Prev Mo"/></a></td>';
	calendarString += '<td class="nospace" align="center" valign="center" width="200" height="20" colspan="5"><b>' + wordMonth[monthNum-1] + '&nbsp;&nbsp;' + yearNum + '</b></td>';
	calendarString += '<td class="nospace" align="center" valign="center" width="30" height="20"><a href="#" onMouseOver="document.NextMo.src=\'webpictures/calendarimages/rightarrowon.jpg\';" onMouseOut="document.NextMo.src=\'webpictures/calendarimages/rightarrowoff.jpg\';" onClick="changedate(\'nextmo\')"><img name="NextMo" src="webpictures/calendarimages/rightarrowoff.jpg" width="30" height="20" border="0" alt="Next Mo"/></a></td>';
	calendarString += '</tr>';
	calendarString += '<tr>';
	calendarString += '<td class="nospace" bgcolor="#DDDDDD" align="center" valign="center" width="30" height="20">Sun</td>';
	calendarString += '<td class="nospace" bgcolor="#DDDDDD" align="center" valign="center" width="30" height="20">Mon</td>';
	calendarString += '<td class="nospace" bgcolor="#DDDDDD" align="center" valign="center" width="30" height="20">Tue</td>';
	calendarString += '<td class="nospace" bgcolor="#DDDDDD" align="center" valign="center" width="30" height="20">Wed</td>';
	calendarString += '<td class="nospace" bgcolor="#DDDDDD" align="center" valign="center" width="30" height="20">Thu</td>';
	calendarString += '<td class="nospace" bgcolor="#DDDDDD" align="center" valign="center" width="30" height="20">Fri</td>';
	calendarString += '<td class="nospace" bgcolor="#DDDDDD" align="center" valign="center" width="30" height="20">Sat</td>';
	calendarString += '</tr>';

	thisDate == 1;

	for (var i = 1; i <= 6; i++) {
		calendarString += '<tr>';
		for (var x = 1; x <= 7; x++) {
			daycounter = (thisDate - firstDay)+1;
			thisDate++;
			if ((daycounter > numbDays) || (daycounter < 1)) {
				calendarString += '<td class="nospace" align="center" bgcolor="#888888" height="20" width="30">&nbsp;</td>';
			} else {
				if (checkevents(daycounter,monthNum,yearNum,i,x) || ((todaysDay == x) && (todaysDate == daycounter) && (todaysMonth == monthNum))){
					if ((todaysDay == x) && (todaysDate == daycounter) && (todaysMonth == monthNum)) {
						calendarString += '<td class="nospace" align="center" bgcolor="#AAFFAA" height="20" width="30"><a href="javascript:showevents(' + daycounter + ',' + monthNum + ',' + yearNum + ',' + i + ',' + x + ')">' + daycounter + '</a></td>';
					}
 					else	calendarString += '<td class="nospace" align="center" bgcolor="#EECCBB" height="20" width="30"><a href="javascript:showevents(' + daycounter + ',' + monthNum + ',' + yearNum + ',' + i + ',' + x + ')">' + daycounter + '</a></td>';
				} else {
					calendarString += '<td class="nospace" align="center" bgcolor="#E4FFE4" height="20" width="30">' + daycounter + '</td>';
				}
			}
		}
		calendarString += '</tr>';
	}

	calendarString += '</table>';

	var object=document.getElementById('calendar');
	object.innerHTML= calendarString;
	thisDate = 1;
}

function createCalendar2() {
	calendarString = '';
	var daycounter = 0;
	calendarString += '<table border="1" cellpadding="0" cellspacing="1" cols="7">';
	calendarString += '<tr>';
	calendarString += '<td class="nospace" align="center" valign="center" width="30" height="20"><a href="#" onMouseOver="document.PrevMo.src=\'webpictures/calendarimages/leftarrowon.jpg\';" onMouseOut="document.PrevMo.src=\'webpictures/calendarimages/leftarrowoff.jpg\';" onClick="changedate2(\'prevmo\')"><img name="PrevMo" src="webpictures/calendarimages/leftarrowoff.jpg" width="30" height="20" border="0" alt="Prev Mo"/></a></td>';
	calendarString += '<td class="nospace" align="center" valign="center" width="200" height="20" colspan="5"><b>' + wordMonth[monthNum-1] + '&nbsp;&nbsp;' + yearNum + '</b></td>';
	calendarString += '<td class="nospace" align="center" valign="center" width="30" height="20"><a href="#" onMouseOver="document.NextMo.src=\'webpictures/calendarimages/rightarrowon.jpg\';" onMouseOut="document.NextMo.src=\'webpictures/calendarimages/rightarrowoff.jpg\';" onClick="changedate2(\'nextmo\')"><img name="NextMo" src="webpictures/calendarimages/rightarrowoff.jpg" width="30" height="20" border="0" alt="Next Mo"/></a></td>';
	calendarString += '</tr>';
	calendarString += '<tr>';
	calendarString += '<td class="nospace" bgcolor="#DDDDDD" align="center" valign="center" width="30" height="20">Sun</td>';
	calendarString += '<td class="nospace" bgcolor="#DDDDDD" align="center" valign="center" width="30" height="20">Mon</td>';
	calendarString += '<td class="nospace" bgcolor="#DDDDDD" align="center" valign="center" width="30" height="20">Tue</td>';
	calendarString += '<td class="nospace" bgcolor="#DDDDDD" align="center" valign="center" width="30" height="20">Wed</td>';
	calendarString += '<td class="nospace" bgcolor="#DDDDDD" align="center" valign="center" width="30" height="20">Thu</td>';
	calendarString += '<td class="nospace" bgcolor="#DDDDDD" align="center" valign="center" width="30" height="20">Fri</td>';
	calendarString += '<td class="nospace" bgcolor="#DDDDDD" align="center" valign="center" width="30" height="20">Sat</td>';
	calendarString += '</tr>';

	thisDate == 1;

	for (var i = 1; i <= 6; i++) {
		calendarString += '<tr>';
		for (var x = 1; x <= 7; x++) {
			daycounter = (thisDate - firstDay)+1;
			thisDate++;
			if ((daycounter > numbDays) || (daycounter < 1)) {
				calendarString += '<td class="nospace" align="center" bgcolor="#888888" height="20" width="30">&nbsp;</td>';
			} else {
				if (checkevents(daycounter,monthNum,yearNum,i,x) || ((todaysDay == x) && (todaysDate == daycounter) && (todaysMonth == monthNum))){
					if ((todaysDay == x) && (todaysDate == daycounter) && (todaysMonth == monthNum)) {
						calendarString += '<td class="nospace" align="center" bgcolor="#AAFFAA" height="20" width="30"><a href="javascript:showdate(' + daycounter + ',' + monthNum + ',' + yearNum + ',' + i + ',' + x + ')">' + daycounter + '</a></td>';
					}
 					else	calendarString += '<td class="nospace" align="center" bgcolor="#EECCBB" height="20" width="30"><a href="javascript:showdate(' + daycounter + ',' + monthNum + ',' + yearNum + ',' + i + ',' + x + ')">' + daycounter + '</a></td>';
				} else {
					calendarString += '<td class="nospace" align="center" bgcolor="#E4FFE4" height="20" width="30"><a href="javascript:showdate(' + daycounter + ',' + monthNum + ',' + yearNum + ',' + i + ',' + x + ')">' + daycounter + '</a></td>';
				}
			}
		}
		calendarString += '</tr>';
	}

	calendarString += '</table>';

	var object=document.getElementById('calendar');
	object.innerHTML= calendarString;
	thisDate = 1;
}


function checkevents(day,month,year,week,dayofweek) {
var numevents = 0;
var floater = 0;

	for (var i = 0; i < events.length; i++) {
		if (events[i][0] == "W") {
			if ((events[i][1] == dayofweek)) numevents++;
		}
		else if (events[i][0] == "Y") {
			if ((events[i][1] == day) && (events[i][2] == month)) numevents++;
		}
		else if (events[i][0] == "F") {
			if ((events[i][2] == 3) && (events[i][1] == 0) && (events[i][3] == 0)){
				easter(year);
				if (easterday == day && eastermonth == month) numevents++;
			}
			else if ((events[i][2] == 3) && (events[i][1] == -2) && (events[i][3] == 0)) {
				easter(year);
				if (goodfriday == day && goodfridaymonth == month) numevents++;			
			}
			else if ((events[i][2] == 3) && (events[i][1] == -1) && (events[i][3] == 0)) {
				easter(year);
				if (eastermonday == day && eastermondaymonth == month) numevents++;
			} else {
				floater = floatingholiday(year,events[i][2],events[i][1],events[i][3]);
				if ((events[i][2] == month) && (floater == day)) numevents++;
			}
		}
		else if ((events[i][1] == day) && (events[i][2] == month) && (events[i][3] == year)) {
			numevents++;
		}
	}

	if (numevents == 0) {
		return false;
	} else {
		return true;
	}
}


function showevents(day,month,year,week,dayofweek) {
var floater = 0;
var object=document.getElementById('ashevent');

	eventString = '';

	for (var i = 0; i < events.length; i++) {
		// First we'll process recurring events (if any):
		if (events[i][0] != "") {
			if (events[i][0] == "D") {
			}
			if (events[i][0] == "W") {
				if ((events[i][1] == dayofweek)) {
				buildEvent(day,month,year,events[i][6],events[i][7]);
				}
			}
			if (events[i][0] == "M") {
			}
			if (events[i][0] == "Y") {
				if ((events[i][1] == day) && (events[i][2] == month)) {
				buildEvent(day,month,year,events[i][6],events[i][7]);
				}
			}
			if (events[i][0] == "F") {
				if ((events[i][2] == 3) && (events[i][1] == 0) && (events[i][3] == 0)) {
					if (easterday == day && eastermonth == month) buildEvent(day,month,year,events[i][6],events[i][7]);
				}
				else if ((events[i][2] == 3) && (events[i][1] == -2) && (events[i][3] == 0)) {
					if (goodfriday == day && goodfridaymonth == month) buildEvent(day,month,year,events[i][6],events[i][7]);
				}
				else if ((events[i][2] == 3) && (events[i][1] == -1) && (events[i][3] == 0)) {
					if (eastermonday == day && eastermondaymonth == month) buildEvent(day,month,year,events[i][6],events[i][7]); 
				} else {
					floater = floatingholiday(year,events[i][2],events[i][1],events[i][3]);
					if ((events[i][2] == month) && (floater == day)) {
						buildEvent(day,month,year,events[i][6],events[i][7]);
					}
				}
			}	
		}
		// Now we'll process any One Time events happening on the matching month, day, year:
		else if ((events[i][1] == day) && (events[i][2] == month) && (events[i][3] == year)) {
		    buildEvent(day,month,year,events[i][6],events[i][7]);
		}
		
	}
	if (eventString == '') {
		buildEvent(day, month, year,'No events to show.' ,'');
	}
	
	object.innerHTML= eventString;  

}

function showdate(day,month,year,week,dayofweek) {
var theevent = "";
var floater = 0;

 theevent += day +'/'+ month +'/'+ year + '\n';
 document.forms.eventform.eventdate.value = theevent;
}

function floatingholiday(targetyr,targetmo,cardinaloccurrence,targetday) {
// Floating holidays/events of the events.js file uses:
//	the Month field for the Month (here it becomes the targetmo field)
//	the Day field as the Cardinal Occurrence  (here it becomes the cardinaloccurrence field)
//		1=1st, 2=2nd, 3=3rd, 4=4th, 5=5th, 6=6th occurrence of the day listed next
//	the Year field as the Day of the week the event/holiday falls on  (here it becomes the targetday field)
//		1=Sunday, 2=Monday, 3=Tuesday, 4=Wednesday, 5=Thurday, 6=Friday, 7=Saturday
//	example: "F",	"1",	"3",	"2", = Floating holiday in January on the 3rd Monday of that month.
//
// In our code below:
// 	targetyr is the active year
// 	targetmo is the active month (1-12)
// 	cardinaloccurrence is the xth occurrence of the targetday (1-6)
// 	targetday is the day of the week the floating holiday is on
//		0=Sun; 1=Mon; 2=Tue; 3=Wed; 4=Thu; 5=Fri; 6=Sat
//		Note: subtract 1 from the targetday field if the info comes from the events.js file
//
// Note:
//	If Memorial Day falls on the 22nd, 23rd, or 24th, then we add 7 to the dayofmonth to the result.
//
// Example: targetyr = 2052; targetmo = 5; cardinaloccurrence = 4; targetday = 1
//	This is the same as saying our floating holiday in the year 2052, is during May, on the 4th Monday
//
var firstdate = new Date(String(targetmo)+"/1/"+String(targetyr));	// Object Storing the first day of the current month.
var firstday = firstdate.getUTCDay();	// The first day (0-6) of the target month.
var dayofmonth = 0;	// zero out our calendar day variable.
var lastdate = new Date(String(Number(targetmo)+1)+"/0/"+String(targetyr));
var	lastday = 0;

    lastday = lastdate.getDate();

	targetday = targetday - 1;

	if (targetday >= firstday) {
		cardinaloccurrence--;	// Subtract 1 from cardinal day.
		dayofmonth = (cardinaloccurrence * 7) + ((targetday - firstday)+1);
	} else {
		dayofmonth = (cardinaloccurrence * 7) + ((targetday - firstday)+1);
	}
	
	if (dayofmonth > lastday) {
		dayofmonth -= 7;
	}
	
return dayofmonth;
}

function checkday(targetyr,targetmo,day) {

var lastdate1 = new Date(String(Number(targetmo))+"/0/"+String(targetyr));
var	lastday1 = 0;
var lastdate2 = new Date(String(Number(targetmo)+1)+"/0/"+String(targetyr));
var	lastday2 = 0;
var dayofmonth = 0;

    lastday1 = lastdate1.getDate();
	lastday2 = lastdate2.getDate();
	
	if (day < 1)
	{
		dayofmonth = lastday1 + day;
	}
	else if (day > lastday2)
	{
		dayofmonth = day - lastday2
	}
	else dayofmonth = day;
	
	return dayofmonth;
}

function buildEvent(day, month, year, title,description) {
	eventString += '<p><div align="left"><strong>' + day + ' ' + wordMonth[Number(month)-1] + ' ' + year + ' - ' + title + ' </strong></div>';
	eventString += '<div align="justify">' + description + '</div></p>';
	return;
}

function randomnum(num)
{
	return Math.floor(Math.random() * num);
}