/*********************************************************************
Filename:   gallery.js
Project:    GHA-NC
Purpose:    Home Gallery Script
Date        Developer   Version
09/02/2011  ZAM         1.0
*********************************************************************/
$(document).ready(function() {      
    //Execute the slideShow, set 4 seconds for each images
    slideShow(8000);});
    
function slideShow(speed) {
    //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>');

    //Get the first image and display it (set it to full opacity)
    $('ul.slideshow li:first').css({opacity: 1.0}).addClass('show');
    
    //Get the caption of the first image from REL attribute and display it
    $('#slideshow-caption h3').html($('ul.slideshow li.show').find('img').attr('title'));
    $('#slideshow-caption p').html($('ul.slideshow li.show').find('img').attr('alt'));
    var url = $('ul.slideshow li.show').find('a').attr('href');
    var target = $('ul.slideshow li.show').find('a').attr('target');
        $('#impactContainer').click(function () {           
            if (target === '_blank') {
                window.open(url);
            } else if (url.indexOf('http://') >= 0) {
                window.location.href = url;
            } else {
                window.location.href = window.location.href.split(window.location.pathname)[0] + url;
            }               
        });

    //Call the gallery function to run the slideshow    
    var timer = setInterval('gallery()',speed);
    
    //pause the slideshow on mouse over
    $('ul.slideshow').hover(function () {clearInterval(timer);},    
        function () {timer = setInterval('gallery()',speed);});}

function gallery() {
    //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'));
    
    if(current.queue('fx').length == 0) {
    
    //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'));
    //Get next image caption
    var url = next.find('a').attr('href');
    var target = next.find('a').attr('target');
    var title = next.find('a img').attr('title');   
    var desc = next.find('a 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 () { 
        $('#impactContainer').click(function () {           
            if (target === '_blank') {
                window.open(url);
            } else if (url.indexOf('http://') >= 0) {
                window.location.href = url;
            } else {
                window.location.href = window.location.href.split(window.location.pathname)[0] + url;
            }               
        });
        $('#slideshow-caption h3').html(title); 
        $('#slideshow-caption p').html(desc);
        $('#slideshow-caption').slideToggle(500); 
    });     
    //Hide the current image
    current.removeClass('show');
    
    }

}