// JavaScript Document

function selectBanner(element)	{
	var selection = document.getElementById(element);
	if(selection.className != "choice shadow selected")	{
	if(element == "compete")	{
		gallery(1);
		document.getElementById("collaborate").className = "choice fade";
		fade("collaborate");
		document.getElementById("connect").className = "choice fade";
		fade("connect");
	}
	else if(element == "collaborate")	{
		gallery(2)
		document.getElementById("compete").className = "choice fade";
		fade("compete");
		document.getElementById("connect").className = "choice fade";
		fade("connect");
	}
	else if(element == "connect")	{
		gallery(3);
		document.getElementById("collaborate").className = "choice fade";
		fade("collaborate");
		document.getElementById("compete").className = "choice fade";
		fade("compete");
	}
	}
	selection.className = "choice shadow selected";
}

function unFade(element)	{
	if(document.getElementById(element).className != "choice shadow selected")	{
		document.getElementById(element).className = "choice shadow";
		document.getElementById(element + "Image").src = "images/" + element + ".png";
	}
}

function fade(element)	{
	if(document.getElementById(element).className != "choice shadow selected")	{
		document.getElementById(element).className = "choice fade";
		document.getElementById(element + "Image").src = "images/" + element + "_fade.png";
	}
}

$(document).ready(function() {     

var picArray = new Array("images/christmasinthepark.jpg","images/vcday.jpg","images/pledge2recycle.jpg",
                               "images/compete.png","images/compete_fade.png","images/collaborate.png","images/collaborate_fade.png",
							   "images/connect.png","images/connect_fade.png","images/fb.png","images/la.png");
var imageArray = new Array();

for(var i=0; i < picArray.length; i++) {
	imageArray[i] = new Image();
	imageArray[i].src = picArray[i];
}
    //Execute the slideShow, set 4 seconds for each images
    slideShow(0);
});
 
function slideShow(number) {
 
 
    //append a LI item to the UL list for displaying caption
    $('ul.slideshow').append('<li id="slideshow-caption" class="caption"><div class="slideshow-caption-container"><h3></h3><p></p></div></li>');
 
    //Set the opacity of all images to 0
    $('ul.slideshow li').css({opacity: 0.0});
     
    //Get the first image and display it (set it to full opacity)
    $('ul.slideshow li:first').css({opacity: 1.0});
     
    //Get the caption of the first image from REL attribute and display it
    $('#slideshow-caption h3').html($('ul.slideshow a:first').find('img').attr('title'));
    $('#slideshow-caption p').html($('ul.slideshow a:first').find('img').attr('alt'));
         
    //Display the caption
    $('#slideshow-caption').css({opacity: 0.7, bottom:0});
     
    //Call the gallery function to run the slideshow   
    //var timer = setInterval('gallery()',speed);
	gallery(number);
     
    /*//pause the slideshow on mouse over
    $('ul.slideshow').hover(
        function () {
            clearInterval(timer);  
        }, 
        function () {
            timer = setInterval('gallery()',speed);        
        }
    );*/
     
}
 
function gallery(number) {
 
 
    //if no IMGs have the show class, grab the first image
    var current = ($('ul.slideshow li.show')?  $('ul.slideshow li.show') : $('#ul.slideshow li:first'));
 
    //Get next image, if it reached the end of the slideshow, rotate it back to the first image
    //var next = ((current.next().length) ? ((current.next().attr('id') == 'slideshow-caption')? $('ul.slideshow li:first') :current.next()) : $('ul.slideshow li:first'));
	var next;
	if(number == 1 || number == 0)
		next = $('#1');
	else if(number == 2)
		next = $('#2');
	else if(number == 3)
		next = $('#3');
		
    if(current != next)	{
    //Get next image caption
    var title = next.find('img').attr('title');
    var desc = next.find('img').attr('alt');   
         
    //Set the fade in effect for the next image, show class has higher z-index
    next.css({opacity: 0.0}).addClass('show').animate({opacity: 1.0}, 1000);
     
    //Hide the caption first, and then set and display the caption
    $('#slideshow-caption').slideToggle(300, function () {
        $('#slideshow-caption h3').html(title);
        $('#slideshow-caption p').html(desc);
        $('#slideshow-caption').slideToggle(500);
    });
 
    //Hide the current image
	if(number != 0)
    	current.animate({opacity: 0.0}, 1000).removeClass('show');
	}
}