window.onload = function() {
	setSlideshowHeights();
}
$(document).ready(function() {
	parseSlideshows();
})
$(window).resize(setSlideshowHeights);


function setSlideshowHeights() {
	var slideshows = $(".slideshow");
	
	slideshows.each(function(index,value) {
		var slideshow = $(value);
		var maxheight = slideshow.height();
		var current_slide;
		
		slideshow.children('.slide').each(function(index,value) {
			current_slide = $(value);
			current_slide.width(slideshow.width());
			if(current_slide.height() > maxheight) {
				maxheight = current_slide.height();
			}
		})
		
		slideshow.height(maxheight);
	});
	
}

function parseSlideshows() {
	var slideshows = $('.slideshow');
	
	slideshows.each(function(index,value) {
		var slideshow = slideshows.eq(index)
		
		setNextTransition(slideshow.attr('id'), slideshow.data('timeout'));
		setCurrentButton(slideshow.attr('id'), 0)
		
		slideshow.data('current', 0);
		slideshow.data('next', 1);
		slideshow.data('live',true);
	});
		
}

function setNextTransition(slideshow_id, timeout) {
	setTimeout('transitionSlides("' + slideshow_id + '")', timeout);
}

function transitionSlides(slideshow_id, next_slide_index, break_chain) {

	var slideshow = $('#' + slideshow_id);
	
	var current_slide = slideshow.children('.slide').eq(slideshow.data('current'));
	if(next_slide_index == undefined) {
		next_slide_index = slideshow.data('next');
	}
	var next_slide = slideshow.children('.slide').eq(next_slide_index);

	if(slideshow.data('live') == true || break_chain == true) {

		/* transition the slides */
		if(slideshow.data('transition') == 'fade') {
			fadeSlides(current_slide, next_slide, slideshow.data('duration'));
		} else if(slideshow.data('transition') == 'fadeoi') {
			fadeoiSlides(current_slide, next_slide, slideshow.data('duration'));
		} else if(slideshow.data('transition') == 'slidelr') {
			if((next_slide_index < slideshow.data('current')) && break_chain == true) {
				slideLeftRight(slideshow, current_slide, next_slide, slideshow.data('duration'));
			} else {
				slideRightLeft(slideshow, current_slide, next_slide, slideshow.data('duration'));
			}
		}
		
		var button_function = 'setCurrentButton("' + slideshow_id + '", ' + next_slide_index + ')'
		setTimeout(button_function, (slideshow.data('duration') / 2));
	
		/* reset the current and next slides */	
		resetCurrent(slideshow, next_slide_index);
		
		/* set the next transition */
		if(break_chain != true) {
			setNextTransition(slideshow_id, slideshow.data('timeout') + slideshow.data('duration'));
		} else {
			slideshow.data('live', false);
		}
		
	}
}

function resetCurrent(slideshow, new_current) {
	slideshow.data('current',new_current);
	var next = slideshow.data('current') + 1;
	if(next > (slideshow.children('.slide').length - 1)) {
		next = 0;
	}
	slideshow.data('next',next);
}

function fadeSlides(current_slide, next_slide, length) {
	current_slide.css("z-index",1);
	next_slide.css("z-index",2);
	next_slide.fadeIn(length);
	current_slide.delay(length).hide(0);
}

function fadeoiSlides(current_slide, next_slide, length) {
	length = length / 2
	current_slide.fadeOut(length);
	next_slide.delay(length).fadeIn(length);
}

function slideLeftRight(slideshow, current_slide, next_slide, length) {
	var width = slideshow.outerWidth() + 'px';
	var current_left = '0px';
	
	next_slide.width(slideshow.width());
	current_slide.width(slideshow.width());
	
	next_slide.css("left", '-' + width);
	next_slide.show();
	current_slide.animate({'left': width}, length).hide(0);
	next_slide.animate({"left": current_left}, length);
}
function slideRightLeft(slideshow, current_slide, next_slide, length) {
	var width = slideshow.outerWidth() + 'px';
	var current_left = '0px';
	
	next_slide.width(slideshow.width());
	current_slide.width(slideshow.width());
	
	next_slide.css("left", width);
	next_slide.show();
	current_slide.animate({'left': '-' + width}, length).hide(0);
	next_slide.animate({"left": current_left}, length);
}

function transitionToIndex(slideshow_id, slide_index) {
	var slideshow = $("#" + slideshow_id)
	if(slideshow.data('current') != slide_index) {
		slideshow.data('duration', '300');
		setCurrentButton(slideshow_id, slide_index);
		transitionSlides(slideshow_id, slide_index, true);
	}
}

function setCurrentButton(slideshow_id, new_current_index) {
	var slideshow = $('#' + slideshow_id)
	var slide_links = slideshow.children(".slide-links").eq(0)
	if(slide_links.length != 0) {
		slide_links.children().removeClass('current');
		slide_links.children().eq(new_current_index).addClass('current');
	}
}