function slideSwitch() {
    var $visible = $('#slideshow img.visible');
    if ( $visible.length == 0 ) $visible = $('#slideshow img:last');
    var $next =  $visible.next().length ? $visible.next()
        : $('#slideshow img:first');

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

    $next.css({opacity: 0.0})
        .addClass('visible')
        .animate({opacity: 1.0}, 1000, function() {
            $visible.removeClass('visible last-visible');
        });
	}
	$(function() {
    setInterval( "slideSwitch()", 7000 );
	});