// If you would like to use a custom loading image or close button reference them in the next two lines.
var loadingImage = '';
var closeButton = '';

var req;
var currMonth;
var currYear;
var aucLoc = 'kinross';

// getPageScroll()
// Returns array with x,y page scroll values.
// Core code from - quirksmode.org
//
function getPageScroll(){

	var yScroll;

	if (self.pageYOffset) {
		yScroll = self.pageYOffset;
	} else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
		yScroll = document.documentElement.scrollTop;
	} else if (document.body) {// all other Explorers
		yScroll = document.body.scrollTop;
	}

	arrayPageScroll = new Array('',yScroll) 
	return arrayPageScroll;
}

// getPageSize()
// Returns array with page width, height and window width, height
// Core code from - quirksmode.org
// Edit for Firefox by pHaez
//
function getPageSize(){
	
	var xScroll, yScroll;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = document.body.scrollWidth;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	
	var windowWidth, windowHeight;
	if (self.innerHeight) {	// all except Explorer
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = windowWidth;
	} else {
		pageWidth = xScroll;
	}


	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
	return arrayPageSize;
}

// pause(numberMillis)
// Pauses code execution for specified time. Uses busy code, not good.
// Code from http://www.faqts.com/knowledge_base/view.phtml/aid/1602
//
function pause(numberMillis){
	var now = new Date();
	var exitTime = now.getTime() + numberMillis;
	while (true) {
		now = new Date();
		if (now.getTime() > exitTime)
			return;
	}
}

// getKey(key)
// Gets keycode. If 'x' is pressed then it hides the lightbox.
//
function getKey(e){
	if (e == null) { // ie
		keycode = event.keyCode;
	} else { // mozilla
		keycode = e.which;
	}
	key = String.fromCharCode(keycode).toLowerCase();
	
	if(key == 'x'){ hideCalendar(); }
}

// listenKey()
//
function listenKey () {	document.onkeypress = getKey; }

// showCalendar()
// Preloads images. Pleaces new image in lightbox then centers and displays.
//
function showCalendar(objLink)
{
	// prep objects
	var objOverlay = document.getElementById('overlay');
	var objCalendar = document.getElementById('popCalendar');
	
	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();


	// set height of Overlay to take up whole page and show
	objOverlay.style.height = (arrayPageSize[1] + 'px');
	objOverlay.style.display = 'block';
	
	//var calendarTop = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - imgPreload.height) / 2);
	//var calendarLeft = ((arrayPageSize[0] - 20 - imgPreload.width) / 2);
	var d = document;
	var rootElm = (d.documentelement && d.compatMode == 'CSS1Compat') ? d.documentelement : d.body;
	var calendarTop = ((arrayPageSize[1] - 396)/2 ) + 'px';
	var calendarLeft = ((arrayPageSize[0] - 450) / 2) + 'px';
	objCalendar.style.top = calendarTop;
	objCalendar.style.left = calendarLeft;
	
	//objCalendar.style.top = (calendarTop < 0) ? "0px" : calendarTop + "px";
	//objCalendar.style.left = (calendarLeft < 0) ? "0px" : calendarLeft + "px";
	objCalendar.style.display = 'block';
}

// hideCalendar()
//
function hideCalendar()
{
	// get objects
	objOverlay = document.getElementById('overlay');
	objCalendar = document.getElementById('popCalendar');

	// hide lightbox and overlay
	objOverlay.style.display = 'none';
	objCalendar.style.display = 'none';

	// disable keypress listener
	document.onkeypress = '';
}

// initCalendar()
// Function runs on window load, going through link tags looking for rel="lightbox".
// These links receive onclick events that enable the lightbox display for their targets.
// The function also inserts html markup at the top of the page which will be used as a
// container for the overlay pattern and the inline image.
//
function initCalendar()
{
	// the rest of this code inserts html at the top of the page that looks like this:
	//
	// <div id="overlay">
	//		<a href="#" onclick="hideLightbox(); return false;"><img id="loadingImage" /></a>
	//	</div>
	
	var objBody = document.getElementsByTagName("body").item(0);
	
	// create overlay div and hardcode some functional styles (aesthetic styles are in CSS file)
	var objOverlay = document.createElement("div");
	objOverlay.setAttribute('id','overlay');
	objOverlay.onclick = function () {hideCalendar(); return false;}
	objOverlay.style.display = 'none';
	objOverlay.style.position = 'absolute';
	objOverlay.style.top = '0';
	objOverlay.style.left = '0';
	objOverlay.style.zIndex = '90';
 	objOverlay.style.width = '100%';
	objBody.insertBefore(objOverlay, objBody.firstChild);
	
	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();
	
	navigate('','',aucLoc);
}

// addLoadEvent()
// Adds event to window.onload without overwriting currently assigned onload functions.
// Function found at Simon Willison's weblog - http://simon.incutio.com/
//
function addLoadEvent(func)
{	
	var oldonload = window.onload;
	if (typeof window.onload != 'function'){
    	window.onload = func;
	} else {
		window.onload = function(){
		oldonload();
		func();
		}
	}

}

// navigate(month,year) - Request info for selected calendar month
function navigate(month,year,getLocation)
{
	var url = "ajax/calendar.aspx?month="+month+"&year="+year+"&loc="+getLocation;
	if (window.XMLHttpRequest)
	{
		req = new XMLHttpRequest();
	}
	else if (window.ActiveXObject)
	{
		req = new ActiveXObject("Microsoft.XMLHTTP");
	}
	req.open("GET", url, true);
	req.onreadystatechange = callback;
	req.send(null);
	currMonth = month;
	currYear = year;
	
	oldID = aucLoc+'-full';
	newID = getLocation+'-full';
	document.getElementById(oldID).className = '';
	document.getElementById(newID).className = 'calActive';
	aucLoc = getLocation;
}

//callback() - Retrieve calendar and display
function callback()
{        
	if(req.readyState == 4)
	{
		if(req.status == 200)
		{
			response = req.responseText;
			arrResponse = response.split('|');
			document.getElementById('monthPrev').href = arrResponse[0];
			document.getElementById('calDate').innerHTML = arrResponse[1];
			document.getElementById('monthNext').href = arrResponse[2];
			document.getElementById('calHolder').innerHTML = arrResponse[3];
		}
		else
		{
			alert("There was a problem retrieving the data:\n" + req.statusText);
		}
	}
}

// calendarLocation(getLocation) - Select location on calendar popup
function calendarLocation(getLocation)
{
	locID = aucLoc+'-full';
	document.getElementById(locID).className = '';
	elID = getLocation+'-full';
	document.getElementById(elID).className = 'calActive';
	locationNav(getLocation,'n');
	navigate(currMonth,currYear,getLocation);
	aucLoc = getLocation;
}

// capitalizeMe()
function capitalizeMe(val)
{
	newVal = '';
	val = val.split(' ');
	for (var c=0; c < val.length; c++)
	{
		newVal += val[c].substring(0,1).toUpperCase() + val[c].substring(1,val[c].length) + ' ';
	}
	return newVal;
}

// locationNav(getLocation) - Displays calendar for selected location
function locationNav(getLocation,changeCal)
{
	locID = aucLoc+'-mini';
	document.getElementById(locID).className = '';
	elID = getLocation+'-mini';
	document.getElementById(elID).className = 'active';
	document.getElementById('locationName').innerHTML = capitalizeMe(getLocation);
	currDates = aucLoc+'Dates-mini';
	newDates = getLocation+'Dates-mini';
	document.getElementById(currDates).style.display = 'none';
	document.getElementById(newDates).style.display = 'block';
	if (changeCal == 'y')
	{
		navigate('','',getLocation);
	}
	aucLoc = getLocation;
}

addLoadEvent(initCalendar);	// run initCalendar onLoad