function slideSwitch() {
    var $active = $('.imgContainer DIV.active');

    if ( $active.length == 0 ) $active = $('.imgContainer DIV:last');

    var $next =  $active.next().length ? $active.next()
        : $('.imgContainer DIV:first');

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

    $next.css({opacity: 0.0})
        .addClass('active')
        .animate({opacity: 1.0}, 1000, function() {
            $active.removeClass('active last-active');
			$active.css("opacity", "0");
        });
}

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

jQuery().ready(function(){ 
	$(".imgContainer div:first").addClass('active').css("opacity", "1");
});