//JavaScript Document - NB When adjusting dimensions remember to append height in generate photo library and set up navigation links

var currentPanel = 1;
var totalPanels = 0;
var autoPlay = true;
var timePassed = 0;
var timeToChange = 6;

function autoAdvance(){

	if(window.timePassed == window.timeToChange){
		window.timePassed = 0;
		if(window.currentPanel == window.totalPanels){
			currentPanel = 0
		}
		if (autoPlay == true){
			$('.marquee_nav a.marquee_nav_item:nth-child('+(window.currentPanel+1)+')').trigger('click');
		}
	}else{
		window.timePassed += 1;
	}
}

$(document).ready(function(){
	
	//Intervals
	setInterval(autoAdvance, 1000);
	$('.marquee_container').hover(
		function(){
			window.autoPlay = false;
			$(this).removeClass(autoplay);
		},
		function(){
			window.autoPlay = true;
			window.timePassed = 0;
			$(this).addClass(autoplay);
		}
	);
	
	//Preload
	$('.marquee_panels img').imgpreload(function(){
		initializeMarquee();
	});	
	
	//Generate Photo Library
	$('img.marquee_panel_photo').each(function(index){
		var photoWidth = $('.marquee_container').width();
		var photoPosition = index * photoWidth;
		$('.marquee_photos').append('<img class="marquee_photo" style="left:'+photoPosition+'" src="'+$(this).attr('src')+'" alt="'+$(this).attr('alt')+'" width="'+photoWidth+'" height="450" />');
		$('.marquee_photos').css('width', photoPosition+photoWidth);
	});
	
	//Generate Navigation Links
	$('.marquee_panels .marquee_panel').each(function(index){
		$('.marquee_nav').append('<a class="marquee_nav_item"></a>')
		window.totalPanels = index + 1;
	});	
	
	// Set Up Navigation Links
	$('.marquee_nav a.marquee_nav_item').click(function(){
		$('.marquee_nav a.marquee_nav_item').removeClass('selected');
		$(this).addClass('selected');
		
		var navClicked = $(this).index();
		var marqueeWidth = $('.marquee_container').width();
		var distanceToMove = marqueeWidth * (-1);
		var newPhotoPosition = navClicked * distanceToMove + 'px';
		var newCaption = $('.marquee_panel_caption').get(navClicked);
		window.currentPanel = navClicked + 1;
		
		$('.marquee_photos').animate({left: newPhotoPosition}, 1000);
		$('.marquee_caption').animate({top: '440px'}, 500, function(){
			var newHTML = $(newCaption).html();
			$('.marquee_caption_content').html(newHTML);
			setCaption();
		});
		
	});
	
});

function setCaption(){
	var captionHeight = $('.marquee_caption').height();
	var marqueeHeight = $('.marquee_container').height();
	var newCaptionHeight = marqueeHeight - captionHeight - 15;
	$('.marquee_caption').delay(100).animate({top: newCaptionHeight}, 500);
	
}

function initializeMarquee(){
	$('.marquee_caption_content').html(
		$('.marquee_panels .marquee_panel:first .marquee_panel_caption').html()
		);
		$('.marquee_nav a.marquee_nav_item:first').addClass('selected');
		$('.marquee_photos').fadeIn(1500);
		setCaption();
}