// - - - - - - - - - - - - - - - - - - -
// BROWSER/PLATFORM IDENTIFIERS
// - - - - - - - - - - - - - - - - - - -

var isNS = document.layers;
var isIE = document.all;

userAgent = window.navigator.userAgent;
browserVers = parseInt(userAgent.charAt(userAgent.indexOf("/")+1),10);

// - - - - - - - - - - - - - - - - - - -
// IMAGEREADY FUNCTIONS
// - - - - - - - - - - - - - - - - - - -

function findElement(n,ly) {
	if (browserVers < 4) return document[n];
	var curDoc = ly ? ly.document : document;
	var elem = curDoc[n];
	if (!elem) {
		for (var i=0;i<curDoc.layers.length;i++) {
			elem = findElement(n,curDoc.layers[i]);
			if (elem) return elem;
		}
	}
	return elem;
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images) {
		var img;
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			img = null;
			if (isNS) 
				img = findElement(changeImages.arguments[i],0);
			else
				img = document.images[changeImages.arguments[i]];

			if (img)
				img.src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
/*
		imgPrevious = newImage(imgPath + "previous.gif");
		imgPrevious_over = newImage(imgPath + "previous_over.gif");
		imgNext = newImage(imgPath + "next.gif");
		imgNext_over = newImage(imgPath + "next_over.gif");
*/
		preloadFlag = true;
	}
}

// - - - - - - - - - - - - - - - - - - -
// ETC.
// - - - - - - - - - - - - - - - - - - -

var imgPath = "gr/";
var width = 384;
var height = 288;
var shift = width - height;

var picArray, totalPics, thisPic, picHandle;
var firstDay, lastDay, onlyOneDay;
var albumHandle, albumTitle;
var showTitle, showDate, showDateOnIndex;

function longDate (d) {
	d = d.toString();
	if (d.length == 5) d = "0" + d;
	yr = "20" + d.substring(4,6);
	mo = new Number(d.substring(0,2))-1;
	dy = d.substring(2,4);
	theDate = new Date(yr,mo,dy);
	monthArray = new Array("Jan.","Feb.","March","April","May","June","July","Aug.","Sept.","Oct.","Nov.","Dec.");
	weekdayArray = new Array("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday");
	return weekdayArray[theDate.getDay()] + ", " + monthArray[mo] + " " + dy + ", " + yr;
}

function shortDate (d) {
	d = d.toString();
	if (d.length == 5) d = "0" + d;
	mo = d.substring(0,2);
	dy = d.substring(2,4);
	yr = d.substring(4,6);
	return mo + " " + dy + " " + yr;
}

function dm(msgStr) {
  document.returnValue = false;
  if (document.images) { 
     window.status = msgStr;
     document.returnValue = true;
  }
}

var showMsg = navigator.userAgent != "Mozilla/4.0 (compatible; MSIE 4.0; Mac_PowerPC)";
function dmim(msgStr) {
  document.returnValue = false;
  if (showMsg) { 
    window.status = msgStr;
    document.returnValue = true;
  }
}

function getThisPic (qs) {
	correctPic = 1;
	if (qs.length > 1) {
		qsAfterQMark = qs.substring(1,qs.length);
		if (!isNaN(qsAfterQMark)) correctPic = qs.substring(1,qs.length);
		else {
			qsDay = qsAfterQMark.charAt(0);
			qsSlug = qsAfterQMark.substring(2,qs.length);
			for (i=0; i<totalPics; i++) {
				if (picArray[i][0] == qsDay && picArray[i][1] == qsSlug) {
					correctPic = i+1;
					break;
				}
			}
		}
	}
	return correctPic;
}

// - - - - - - - - - - - - - - - - - - -
// INIT FUNCTION
// - - - - - - - - - - - - - - - - - - -

function init () {
	preloadImages();
	
	picArray = picArray.slice(0,picArray.length - 1);
	totalPics = picArray.length;

	firstDay = picArray[0][0];
	lastDay = picArray[totalPics-1][0];
	onlyOneDay = (firstDay == lastDay);
}

// - - - - - - - - - - - - - - - - - - -