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

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

    var $next =  $active.next().length ? $active.next()
        : $('#slideshow img:first');

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

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

function showLarge(img) {
	var id = img.substring(2, img.length);
	if ( id > 2 ) id = id - 1;
	var l_img = "pl" + id;
	var $current_img = $(l_img);
	
    $current_img.css({opacity: 0.0})
        .addClass('active')
        .animate({opacity: 1.0}, 1000, function() {
            $('#slideshow img.active').removeClass('active last-active');
        });
        
    slideSwitch();
}

$(function() {
    setInterval( "slideSwitch()", 5000 );
});