function slideSwitch() {
    var $active = $('#slideshow IMG.active');

    if ( $active.length == 0 ) $active = $('#slideshow IMG:last');

    // use this to pull the images in the order they appear in the markup
    var $next =  $active.next().length ? $active.next()
    : $('#slideshow IMG:first');

    // uncomment the 3 lines below to pull the images in random order

    // var $sibs  = $active.siblings();
    // var rndNum = Math.floor(Math.random() * $sibs.length );
    // var $next  = $( $sibs[ rndNum ] );


    $active.addClass('last-active');

    $next.css({
        opacity: 0.0
    })
    .addClass('active')
    .animate({
        opacity: 1.0
    }, 1000, function() {
        $active.removeClass('active last-active');
    });
}
$(function() {
    setInterval( "slideSwitch()", 5000 );
});