// Rotates the banner adverts

function activateBannerRotator(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>');
    //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 });
    //Call the gallery function to run the slideshow   
    var 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'));

    //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'));

    //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 current image
    current.animate({ opacity: 1.0 }, 1000).removeClass('show');
}