// JavaScript Event Calendar
// Version: 1.0
// Date: November 15, 1998
// For information: http://members.aol.com/kevinilsen  or kilsen@m-vation.com
// http://home.comcast.net/~kilsen/Calendar/calexample1.htm

// Configurable values are set to defaults here; can override them before calling Calendar( ) from the HTML page

var SpecialDay=0;	// 1=Sunday, 2=Monday, . . . 7=Saturday
var FontSize=1;
var ColorBackground="ffffcc";
var ColorSpecialDay = "red";
var ColorToday = "green";
var ColorEvent = "blue";

// Initialize the range of the calendar to Jan - Dec of the current year.  Calls to DefineEvent( ) will change this
// as needed; it is also possible to explicitly override the range before calling Calendar( ) from the HTML page.

var today = new Date();
var FirstMonth=GetFullYear(today) * 100 + 1;
var LastMonth=FirstMonth + 11;

// Events[] is a SPARSE array; Call DefineEvent( ) to populate it
var Events = new Array;

// Each event is defined by calling the DefineEvent( ) routine with the following parameters:
//
//   DefineEvent(EventDate, EventDescription, EventLink, Image, Width, Height)
//        EventDate is a numeric value in the format YYYYMMDD
//        EvenDescription is a string that can include embedded HTML tags (e.g., <BR>, <strong>, etc.)
//        EventLink is the URL of the target page if a hyperlink is desired from this event entry
//        Image is the URL of the image if you want to display an image with this event
//        Width is the width of the image in pixels
//        Height is the height of the image in pixels
DefineEvent(20100221,"4:00pm: First SHRSL League Meeting", "", "", 0, 0);
DefineEvent(20100308,"Registration Email Notification to Returning Families", "", "", 0, 0);
DefineEvent(20100328,"2:00-4:00pm: First chance to register @ SPHOA Clubhouse", "", "", 0, 0);
DefineEvent(20100420,"7:00pm: Parents Meeting @ SPHOA Clubhouse(2nd chance to register)", "", "", 0, 0);
DefineEvent(20100502,"5:00-7:00pm: Last chance to register at the clubhouse", "", "", 0, 0);
DefineEvent(20100517,"4:00pm: Start of Afternoon Practices", "", "", 0, 0);
DefineEvent(20100525,"7:00pm: FCGold Short Stroke Clinic", "", "", 0, 0);
DefineEvent(20100527,"5:00-6:00pm: Pictures - Individuals", "", "", 0, 0);
DefineEvent(20100527,"6:00pm: Team Picture - Please arrive by 5:45", "", "", 0, 0);
DefineEvent(20100531,"Memorial Day - No Practice", "", "", 0, 0);
DefineEvent(20100601,"5:30pm: 7&8 and 9&10 Practice due to SWE party", "", "", 0, 0);
DefineEvent(20100601,"6:00pm: 6&U and 11&12 Practice due to SWE party", "", "", 0, 0);
DefineEvent(20100602,"During practice: TIME TRIALS during Afternoon Practices", "", "", 0, 0);
DefineEvent(20100603,"LAST DAY OF SCHOOL (FBISD)", "", "", 0, 0);
DefineEvent(20100603,"7:00-9:00pm Ice Cream Social @ the pool", "", "", 0, 0);
DefineEvent(20100604,"7:30am: Start of Morning Practices", "", "", 0, 0);
DefineEvent(20100604,"During practice: TIME TRIALS (Make-Up)", "", "", 0, 0);
DefineEvent(20100607,"5:00pm: Meet #1 @ Ashton Village", "", "", 0, 0);
DefineEvent(20100614,"5:00pm: Meet #2 Greatwood Geysers ", "", "", 0, 0);
DefineEvent(20100621,"5:00pm: Meet #3 @ Quail Valley (in Meadowcreek) ", "", "", 0, 0);
DefineEvent(20100624,"Morning: Swim-A-Thon during regular practice time", "", "", 0, 0);
DefineEvent(20100628,"5:00pm: Meet #4 Ashton Village ", "", "", 0, 0);
DefineEvent(20100705,"5:00pm: Meet #5 @ Greatwood Geysers ", "", "", 0, 0);
DefineEvent(20100712,"5:00pm: Meet #6 Quail Valley ", "", "", 0, 0);
DefineEvent(20100715,"6:45am: 10 & Under Prelims @ Quail Valley (Races start at 8 AM)", "", "", 0, 0);
DefineEvent(20100715,"3:45pm: 11 & Up Prelims @ FC Gold (Races at 5 PM)", "", "", 0, 0);
DefineEvent(20100717,"7:00am: Division 4 Finals @ Ashton Village (Races at 8 AM)", "", "", 0, 0);
DefineEvent(20100719,"6:50am: ALL STARS @ Don Cook Nat - 10 & UNDER (Races start at 8AM)", "", "", 0, 0);
DefineEvent(20100719,"12:40pm: ALL STARS @ Don Cook Nat - 11 & UP (Races start at 2PM)", "", "", 0, 0);
DefineEvent(20100720,"6:00pm: Team Party at SPHOA clubhouse/pool", "", "", 0, 0);
DefineEvent(20100508,"7:30am: Meadows Short Stroke Clinic", "", "", 0, 0);
DefineEvent(20100508,"8:00am: Meadows Long Stroke Clinic", "", "", 0, 0);
DefineEvent(20100515,"7:30am: Maplewood Short Stroke Clinic", "", "", 0, 0);
DefineEvent(20100515,"8:00am: Maplewood Long Stroke Clinic", "", "", 0, 0);
DefineEvent(20100525,"7:30am: Glenshire Short Stroke Clinic", "", "", 0, 0);
DefineEvent(20100525,"8:00am: Glenshire Long Stroke Clinic", "", "", 0, 0);
DefineEvent(20100605,"7:30am: New Territory Short Stroke Clinic", "", "", 0, 0);
DefineEvent(20100605,"8:00am: New Territory Long Stroke Clinic", "", "", 0, 0);
//

function DefineEvent(EventDate, EventDescription, EventLink, Image, Width, Height) {
	var tmp;

	// Build the HTML string for this event: image (optional), link (optional), and description
	tmp = "";
	if (Image != "")
		tmp = tmp + '<img src="' + Image + '"  width="' + Width + '" height="' + Height + '" align="left" valign="top">';
	if (EventLink != "")
		tmp = tmp + '<a href="' + EventLink + '">';
	tmp = tmp + EventDescription;
	if (EventLink != "") tmp = tmp + '</a>';

	// If an event already exists for this date, append the new event to it.
	if (Events[EventDate])
		Events[EventDate] += "<BR>" + tmp;
	else
		Events[EventDate] = tmp;

	// Adjust the minimum and maximum month & year to include this date
	tmp = Math.floor(EventDate / 100);
	if (tmp < FirstMonth) FirstMonth = tmp;
	if (tmp > LastMonth) LastMonth = tmp;
}

// Utility function to populate an array with values
function arr() {
	for (var n=0;n<arr.arguments.length;n++) {
		this[n+1] = arr.arguments[n];
	}
}

// Create the array of month names (used in various places)
var months = new arr("January","February","March","April","May","June","July","August","September","October","November","December");

// Calendar( ) is the only routine that needs to be called to display the calendar
function Calendar( ) {
	var curdy, curmo, yr, mo, dy, dayofweek, yearmonth, bgn, lastday, jump;
	var weekdays = new arr("Sun","Mon","Tue","Wed","Thu","Fri","Sat");
	var thispage = window.location.pathname;

	// Save current day and month for comparison
	curdy = today.getDate();
	curmo = today.getMonth()+1;

	// Default to current month and year
	mo = curmo;
	yr = GetFullYear(today);
	yearmonth = (yr * 100) + mo;

	// If querystring parameter is present, get the month/year ("calendar.htm?YYYYMM")
	if (location.search.length > 1) {
		yearmonth = parseInt(location.search.substring(1,location.search.length));
		if ((""+yearmonth).length == 6) {
			mo = yearmonth % 100;
			yr = (yearmonth - mo) / 100;
		}
	}

	// Constrain to the range of months with events
	if (yearmonth < FirstMonth) {
		mo = FirstMonth % 100;
		yr = (FirstMonth - mo) / 100;
		yearmonth = FirstMonth;
	}
	if (yearmonth > LastMonth) {
		mo = LastMonth % 100;
		yr = (LastMonth - mo) / 100;
		yearmonth = LastMonth;
	}

	// Create a datae object for the first day of the desired month
	bgn = new Date(months[mo] + " 1," + yr);
	// Get the day-of-week of the first day, and the # days in the month
	dayofweek = bgn.getDay();
	lastday = NumDaysIn(mo,yr);
	document.write("<TABLE width=100% border=1 ><TR><TD ALIGN=CENTER COLSPAN=7><FONT SIZE="+FontSize+"><B>"+months[mo]+" "+yr+"</B></FONT></TD></TR><TR>");
	for (var i=1;i<=7;i++){
		document.write("<TD ALIGN=CENTER WIDTH=14%><FONT SIZE=1>"+weekdays[i]+"</FONT></TD>");
	}
	document.write("</TR><TR>");
	dy = 1;
	// Special handling for the first week of the month
	for (var i=1;i<=7;i++) {
		// If the day is less than the day of the week determined to be the first day
		// of the month, print a space in this cell of the table.
		if (i <= dayofweek){
			document.write("<TD ALIGN=CENTER><FONT SIZE="+FontSize+">&nbsp;</FONT></TD>");
		}
		// Otherwise, write date and the event, if any, in this cell of the table.
		else {
			ShowDate(yr,mo,dy,i,curmo,curdy);
			dy++;
		}
	}
	document.write("</TR><TR>");
	// Rest of the weeks . . .
	while (dy <= lastday) {
		for (var i=1;i<=7;i++) {
			// If the day is greater than the last day of the month, print a space in
			// this cell of the table.
			if (dy > lastday) {
				document.write("<TD ALIGN=CENTER>&nbsp;</TD>");
			}
			// Otherwise, write date and the event, if any, in this cell of the table.
			else {
				ShowDate(yr,mo,dy,i,curmo,curdy);
				dy++;
			}
		}
		document.write("</TR><TR>");
	}

	jump = "";
	if (yearmonth > FirstMonth)
		jump += '<a href="' + thispage + '?'+PrevYearMonth(yearmonth)+'">&lt;-- View '+months[PrevMonth(mo)]+'</a>';
	if ((yearmonth > FirstMonth) && (yearmonth < LastMonth))
		jump += " &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ";
	if (yearmonth < LastMonth)
		jump += '<a href="' + thispage + '?'+NextYearMonth(yearmonth)+'">View '+months[NextMonth(mo)]+' --&gt;</a>';
	document.write("</TR><TR><TD colspan=7 align=center>"+jump+"</TD></TR>");
	document.write("<TR><TD colspan=7 align=center valign=middle><FORM>Jump to month:&nbsp;&nbsp;");
	BuildSelectionList(yearmonth, thispage);
	document.write("</FORM></TD></TR></TABLE>");
}

// Display a date in the appropriate color, with events (if there are any)
function ShowDate(yr, mo, dy, dayofweek, currentmonth, currentday) {
	var ind, HighlightEvent, tmp;

	document.write("<TD ALIGN=LEFT VALIGN=TOP><P ALIGN=RIGHT><FONT SIZE="+FontSize);
	HighlightEvent = true;
	if (dayofweek == SpecialDay) {
		document.write(" COLOR=" + ColorSpecialDay);
		HighlightEvent = false;
	}
	if ((mo == currentmonth) && (dy == currentday)) {
		document.write(" COLOR=" + ColorToday);
		HighlightEvent = false;
	}
	ind = (((yr * 100) + mo) * 100) + dy;
	if (Events[ind]) {
		tmp = Events[ind];
		if (HighlightEvent) {
			 document.write(" COLOR=" + ColorEvent);
		}
	} else tmp="&nbsp;<BR>&nbsp;";
	document.write("><B>"+dy+"</B></ALIGN></FONT></P><FONT SIZE=1>"+tmp+"</TD>");
}

// Remaining routines are utilities used above
function NumDaysIn(mo,yr) {
	if (mo==4 || mo==6 || mo==9 || mo==11) return 30;
	else if ((mo==2) && LeapYear(yr)) return 29;
	else if (mo==2) return 28;
	else return 31;
}

function LeapYear(yr) {
	if (((yr % 4 == 0) && yr % 100 != 0) || yr % 400 == 0) return true;
	else return false;
}

// fixes a Netscape 2 and 3 bug
function GetFullYear(d) { // d is a date object
	var yr;

	yr = d.getYear();
	if (yr < 1000)
	yr +=1900;
	return yr;
}

function PrevMonth(mth) {
	if (mth == 1) return 12;
	else return (mth-1);
}

function NextMonth(mth) {
	if (mth == 12) return 1;
	else return (mth+1);
}

function PrevYearMonth(yrmth) {
	if ((yrmth % 100) == 1) return ((yrmth-100)+11);
	else return (yrmth-1);
}

function NextYearMonth(yrmth) {
	if ((yrmth % 100) == 12) return ((yrmth-11)+100);
	else return (yrmth+1);
}

function JumpTo(calendar, thispage) {
	var sel, yrmo;

	sel = calendar.selectedIndex;
	yrmo = calendar.form.jumpmonth[sel].value;
	document.location = thispage + "?" + yrmo;
}

function BuildSelectionList(current,thispage) {
	var mo, yr, yearmonth;

	yearmonth = FirstMonth;
	document.write("<select name=\"jumpmonth\" size=1 onchange=\"JumpTo(this,'" + thispage + "')\">");
	while (yearmonth <= LastMonth) {
		mo = yearmonth % 100;
		yr = (yearmonth - mo) / 100;
		document.write("<option value=");
		document.write(yearmonth);
		if (yearmonth == current) document.write(" selected");
		document.write(">");
		document.write(months[mo]+" "+yr);
		yearmonth = NextYearMonth(yearmonth);
	}
	document.write("</select>");
}