function slideTargets() {
    var $active = $('#targets-placeholder div.active');
    if($active.length == 0)
    	$active = $('#targets-placeholder div:last');

    var $next = $active.next().length?$active.next():$('#targets-placeholder div:first');
    $active.addClass('last-active');

    $next.css({opacity: 0.0}).addClass('active').animate({opacity: 1.0}, 1500,
    	function() {
    		$active.removeClass('active last-active');
		});
}