var which_img=0;
var nbr_of_images = 15;
var delay = 5000;
var fade_speed=300;
var paused = false;
var pause_img=-1;

function pause(idx) {
    pause_img = idx;
	paused = true;
	$(photo(pause_img)).css('opacity', '1');
	$(photo(which_img)).fadeOut(5);
	$(photo(pause_img)).fadeIn(5);
}

function resume() {
    $(photo(pause_img)).css('opacity', '0');
    $(photo(pause_img)).fadeOut(5);
	$(photo(which_img)).fadeIn(5);
	paused=false;
}

function photo(idx) {
	return ".gallery-item:eq(" + idx + ")";
}

function startFading() {
	which_img = nbr_of_images-1;
	$(photo(which_img)).css('opacity','1');
	window.setTimeout("fadeNext()",delay);
}

function fadeNext() {
	if (!paused) {
		$(photo(which_img)).fadeOut(fade_speed);
		which_img--;
		if (which_img<2) which_img=nbr_of_images-1;
		$(photo(which_img)).css('opacity','1');
		$(photo(which_img)).fadeIn(fade_speed);
	}
	window.setTimeout("fadeNext()",delay);
}