// should include onload="preload();"
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var currentSlide = 1;
var lastSlide = 0;
var nextButtonDisabled = false;
var prevButtonDisabled = true;
var images = new Array();
var slideshowName = "";
var year = "";
var rootDir = "../media/slideshows/";
var timer = null;
var interval = 3000;
var continueShow = false;
var captions;
function preload(yr, name, c){
slideshowName = name;
year = yr;
lastSlide = c.length;
captions = c.slice(0);
for (x = 1; x <= lastSlide; x++){
images[x] = new Image();
images[x].src = rootDir + year + "/" + name + "/" + name + x + ".jpg";
}
}
function startSlideshow() {
continueShow = true;
showSlide();
timer = setTimeout("nextSlide()", interval);
}
function stopSlideshow() {
continueShow = false;
clearTimeout(timer);
}
function slidseShowKeydown(e)
{
var returnCode = true;
continueShow = false; // any key press cancels the slideshow
switch (e.keyCode) { // esc key
case 27:
stopSlideshow();
returnCode = false;
break;
case 32: // space bar starts the show
startSlideshow("sunnyDay", 7);
returnCode = false;
break;
case 37: // IE and Moz
case 57387: // Opera 7
prevSlide(); // Left
returnCode = false;
break;
case 39:
case 57388:
nextSlide(); // Right
returnCode = false;
break;
case 40:
case 57386:
stopSlideshow(); // Down SHOULD TRAP ESC AND OTHERS FOR EXIT (DISPLAY:NONE)
break;
}
return returnCode;
}
function nextSlide() {
if(currentSlide < lastSlide) {
if(prevButtonDisabled) {
enablePrevButton();
prevButtonDisabled = false;
}
highlightNextButton();
var t=setTimeout("resetNextButton()",200);
currentSlide++;
showSlide();
}
}
function prevSlide() {
if(currentSlide > 1) {
if(nextButtonDisabled) {
enableNextButton();
nextButtonDisabled = false;
}
highlightPrevButton();
var t=setTimeout("resetPrevButton()",200);
currentSlide--;
showSlide();
}
}
function resetPrevButton() {
if(currentSlide > 1) {
enablePrevButton();
}
else {
disablePrevButton();
prevButtonDisabled = true;
}
}
function resetNextButton() {
if(currentSlide < lastSlide) {
enableNextButton()
}
else {
disableNextButton();
nextButtonDisabled = true;
}
}
function enablePrevButton() {
var prevButton = document.getElementById("prevButton");
prevButton.src = rootDir + "img/slide_prev.gif";
}
function enableNextButton() {
var nextButton = document.getElementById("nextButton");
nextButton.src = rootDir + "img/slide_next.gif";
}
function highlightPrevButton() {
var prevButton = document.getElementById("prevButton");
prevButton.src = rootDir + "img/slide_prev_sel.gif";
}
function highlightNextButton() {
var nextButton = document.getElementById("nextButton");
nextButton.src = rootDir + "img/slide_next_sel.gif";
}
function disablePrevButton() {
var prevButton = document.getElementById("prevButton");
prevButton.src = rootDir + "img/slide_prev_off.gif";
}
function disableNextButton() {
var nextButton = document.getElementById("nextButton");
nextButton.src = rootDir + "img/slide_next_off.gif";
}
function showSlideCounter(page) {
var page = document.getElementById("pagePos");
page.innerHTML = " " + currentSlide + " of " + lastSlide + " ";
}
function showSlide() {
var slide = document.getElementById("slideHolder");
var caption = document.getElementById("caption");
slide.src = rootDir + year + "/" + slideshowName + "/" + slideshowName + currentSlide + ".jpg"; //change to use images[currentSlide]
caption.innerHTML = captions[currentSlide - 1];
showSlideCounter(currentSlide);
if(currentSlide >= lastSlide)2
continueShow = false;
if(continueShow) {
clearTimeout(timer);
timer = setTimeout("nextSlide()", interval);
}
}