$(document).ready(function() {      
     
    //Execute the slider, set 4 seconds for each images
    slider(6000);
 
});
 
function slider(speed) {
 
    //Set the opacity of all images to 0
    $('ul.slider li').css({opacity: 0.0});
     
    //Get the first image and display it (set it to full opacity)
    $('ul.slider li.show').css({opacity: 1.0});
     
    //Call the gallery function to run the slider    
    var timer = setInterval('gallery()',speed);
     
}
 
function gallery() {
 
 
    //if no IMGs have the show class, grab the first image
    var current = ($('ul.slider li.show')?  $('ul.slider li.show') : $('#ul.slider li:first'));
 
    //Get next image, if it reached the end of the slider, rotate it back to the first image
    var next = ((current.next().length) ? ((current.next().attr('id') == 'slider-caption')? $('ul.slider li:first') :current.next()) : $('ul.slider li:first'));
         
    //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}, 2000);
     
    //Hide the current image
    current.animate({opacity: 0.0}, 2000).removeClass('show');
 
}