function stopOrStart() {
 if (onoff) {
	stop();
 } else {
	play();
 }
}

function toggleLoop() {
 if (loop) {
	loop = 0;
 } else {
	loop = 1;
 }
}
function changeElementText(id, newText) {
 element = document.getElementById(id);
 element.innerHTML = newText;
}
function stop() {
 changeElementText("stopOrStartText", "play");
 onoff = 0;
 status = "The slide show is stopped, Click [play] to resume.";
 clearTimeout(timer);

}
function play() {
 changeElementText("stopOrStartText", "stop");

 onoff = 1;
 //status = "Slide show is running...";
 status = "";
 go_to_next_photo();
}
function changeDirection() {
 if (direction == 1) {
	direction = -1;
	changeElementText("changeDirText", "forward");
 } else {
	direction = 1;
	changeElementText("changeDirText", "reverse");
 }
 preload_next_photo();

}
function change_transition() {
 current_transition = document.TopForm.transitionType.selectedIndex;
}
function preload_complete() {
}
function reset_timer() {
 clearTimeout(timer);
 if (onoff) {
	timeout_value = document.TopForm.time.options[document.TopForm.time.selectedIndex].value * 1000;
	timer = setTimeout('go_to_next_photo()', timeout_value);
 }
}
function wait_for_current_photo() {

 /* Show the current photo */
 if (!show_current_photo()) {

	/*
	 * The current photo isn't loaded yet. Set a short timer just to wait
	 * until the current photo is loaded.
	 */
	status = "Picture is loading...(" + current_location + " of" + photo_count + 
		"). " + "Please Wait..." ;
	clearTimeout(timer);
	timer = setTimeout('wait_for_current_photo()', 500);
	return 0;
 } else {
 	status = "Slide show is running..." ;
	preload_next_photo();
	reset_timer();
 }
}
function go_to_next_photo() {
 /* Go to the next location */
 current_location = next_location;

 /* Show the current photo */
 if (!show_current_photo()) {
	wait_for_current_photo();
	return 0;
 }
 preload_next_photo();
 reset_timer();
}
function preload_next_photo() {
 
 /* Calculate the new next location */
 next_location = (parseInt(current_location) + parseInt(direction));
 if (next_location > photo_count) {
	next_location = 1;
	if (!loop) {
	 stop();
	}
 }
 if (next_location == 0) {
 next_location = photo_count;
	if (!loop) {
	 stop();
	}
 }
 
 /* Preload the next photo */
 preload_photo(next_location);
}

function show_current_photo() {
 /*
 * If the current photo is not completely loaded don't display it.
 */
 if (!images[current_location] || !images[current_location].complete) {
	preload_photo(current_location);
	return 0;
 }
 
 /* transistion effects */
 if (browserCanBlend){
	var do_transition;
	if (current_transition == (transition_count)) {
	 do_transition = Math.floor(Math.random() * transition_count);
	} else {
	 do_transition = current_transition;
	}
	document.images.slide.style.filter=transitions[do_transition];
	document.images.slide.filters[0].Apply();
 }
 document.slide.src = images[current_location].src;
 setCaption(photo_captions[current_location]);
 status=photo_captions[current_location];

 if (browserCanBlend) {
	document.images.slide.filters[0].Play();
 }

 return 1;
}

function preload_photo(index) {

 /* Load the next picture */
 if (pics_loaded < photo_count) {

	/* not all the pics are loaded. Is the next one loaded? */
	if (!images[index]) {
	 images[index] = new Image;
	 images[index].onLoad = preload_complete();
	 images[index].src = document.getElementById("photo_urls_" + index).href;
	 pics_loaded++;
	}
 } 
}
function setCaption(text) {
 changeElementText("caption", "<p class=padded>(<b>" + current_location + "</b> of <b>" + photo_count + "</b>) " + text+"</p>");
}
function focus1()
{
var scr_w = screen.availWidth;
var scr_h = screen.availHeight;

if (document.layers) var browseWidth=window.outerWidth;
if (document.all) var browseHeight=document.body.clientWidth;

if (scr_w != browseWidth|| scr_h != browseHeight) {
    window.resizeTo(scr_w, scr_h);
    window.moveTo(0, 0);
}
}